APS ST started today :)
You cannot run that adapter. No 'ifs' 'ands' or 'buts' that adapter needs to go. Go out and find the APS ST exhaust
The supplied unichip and boost solenoid are plenty capable for what you are running. there is no reason to spend money on an EVC 6 and not spending it on the proper exhaust setup. What is your reasoning for the new boost controller? do not tune it until you get a proper exhaust on it
The supplied unichip and boost solenoid are plenty capable for what you are running. there is no reason to spend money on an EVC 6 and not spending it on the proper exhaust setup. What is your reasoning for the new boost controller? do not tune it until you get a proper exhaust on it
and i am not paying for the EVC, a freind of mine gave it to me as a gift
+111111111 What did I tell you in the first page? APS ST is very very very sensitive to the exhaust back pressure.
i remember that very well
Using that adaptor is same as using a stock exhaust... You put a huge bottle neck and you expect to not have exhaust back pressure??
No am not expecting not to have back pressure, but eve with stock exhuast i sould get mor gains right ??? i will invest on other exhuast later on for sure, but i am afraid that its is not an exhuast problem thats why i am soo lost trying to figure it out
You really need to open up the exhaust. There's nothing wrong with the base map.. Trust us who have done this several times already.. I helped 4 of my friends with their APS ST installations... I had that horrible adaptor for a week while my custom exhaust was being built, and I know how your car feels like... Feels very stuffed... clogged... BECAUSE IT IS!!!
i remember that very well
Using that adaptor is same as using a stock exhaust... You put a huge bottle neck and you expect to not have exhaust back pressure??
No am not expecting not to have back pressure, but eve with stock exhuast i sould get mor gains right ??? i will invest on other exhuast later on for sure, but i am afraid that its is not an exhuast problem thats why i am soo lost trying to figure it out
You really need to open up the exhaust. There's nothing wrong with the base map.. Trust us who have done this several times already.. I helped 4 of my friends with their APS ST installations... I had that horrible adaptor for a week while my custom exhaust was being built, and I know how your car feels like... Feels very stuffed... clogged... BECAUSE IT IS!!!
I think you are not quite understanding how sensitive APS ST kit is to exhaust back pressure.. Here is how my custom exhaust looked like. 100mm diameter reverse Y pipe spliting into dual 2.5"(63mm) pipes. Isn't Blitz Nurspec a single outlet exhaust?
yes it is
Basically half the diameter of my custom exhaust... It might be alright if you get rid of that stupid adaptor, but if it doesn't it just might be too restrictive with just one 2.5" exhaust pipe.. Then go with APS dual exhaust. 3 of my friends with APS ST bought HKS true dual (or HKS true dual knock off for $500) and custom fabricated 100mm reverse Y pipe, and one other guy fabricated a new 80mm mid pipe for his Fujitsubo exhaust. <- This worked out too.
yes it is
Basically half the diameter of my custom exhaust... It might be alright if you get rid of that stupid adaptor, but if it doesn't it just might be too restrictive with just one 2.5" exhaust pipe.. Then go with APS dual exhaust. 3 of my friends with APS ST bought HKS true dual (or HKS true dual knock off for $500) and custom fabricated 100mm reverse Y pipe, and one other guy fabricated a new 80mm mid pipe for his Fujitsubo exhaust. <- This worked out too.
what do you mean ?? get what done ?
thanks again guys for all the advices and tips, i am sorry for being a PITA,
appreciate ur support,
honestly i ran a stock exhaust with a cutout and with the cutout closed(stock exhaust) i still put out decent power, i think 330hp &370tq on a dyno dynamics(heartbreaker) without the exhuast adapter, something is up again check for clutch issues, or tuning maybe the unichip isnt grounded right or something. I never used one so dont know how extensive install is, but i know some people had issues with grounding on the greddy ecu, maybe something simple. check the plenum using your palm at idle, if it sucks its leaking, it takes a while to get all 6 sealed
i really understand that very well. and i really appreciate all ur advices, but what i am trying to say is ? would the car ve around 260to 280 WHP becuase of the adapter??
I have no idea what the hp numbers would be. What I can tell you is that you are choking your setup. The APS ST is known for being very sensitive to exhaust back pressure. It is clear you are running a less than desirable exhaust setup, and make less boost than you should be. Lower boost will equate to less air flowing through the motor, which can equate to rich AFRs and low power.
That said, I still think you have something else contributing here. Like I previously said, I don't think the alignment solved your previous issue(s). do you have any engine lights remaining, or stored codes?
and i am not paying for the EVC, a freind of mine gave it to me as a gift
In that case, sell it and buy what is needed for your car -> a proper exhaust
i might do the mid-pipe fabrication thing. i cannot afford a new APS ST exhuast as of now.
Sell the EVC and your current exhaust to get a proper exhaust setup
what do you mean ?? get what done ?
I believe he is refering to leeboy's exhaust fabrication
thats why i got it , just for the teaks and to try not to have any boost spikes.
You are really putting the cart before the horse here. Currently you don't have any need for it. Even with a fully functioning setup, you really don't have a need for it. Sell this and use the money to buy the exhaust you need. The unichip and boost solenoid that come with the kit are more than capable for your setup. If properly tuned, the unichip will do a fine job with your boost control.
thanks again guys for all the advices and tips, i am sorry for being a PITA,
appreciate ur support,
I have no idea what the hp numbers would be. What I can tell you is that you are choking your setup. The APS ST is known for being very sensitive to exhaust back pressure. It is clear you are running a less than desirable exhaust setup, and make less boost than you should be. Lower boost will equate to less air flowing through the motor, which can equate to rich AFRs and low power.
That said, I still think you have something else contributing here. Like I previously said, I don't think the alignment solved your previous issue(s). do you have any engine lights remaining, or stored codes?
and i am not paying for the EVC, a freind of mine gave it to me as a gift
In that case, sell it and buy what is needed for your car -> a proper exhaust
i might do the mid-pipe fabrication thing. i cannot afford a new APS ST exhuast as of now.
Sell the EVC and your current exhaust to get a proper exhaust setup
what do you mean ?? get what done ?
I believe he is refering to leeboy's exhaust fabrication
thats why i got it , just for the teaks and to try not to have any boost spikes.
You are really putting the cart before the horse here. Currently you don't have any need for it. Even with a fully functioning setup, you really don't have a need for it. Sell this and use the money to buy the exhaust you need. The unichip and boost solenoid that come with the kit are more than capable for your setup. If properly tuned, the unichip will do a fine job with your boost control.
thanks again guys for all the advices and tips, i am sorry for being a PITA,
appreciate ur support,
If you are refering to my custom exhaust... I wouldn't recommand anyone doing this especially if you are in the US... There are plenty of good exhausts out there... even the knock off ones... I went with this route because I didn't want to wait 2~3 weeks to receive a exhaust and pay ridiculous shipping cost to South Korea. This custom setup cost me $1,300... So, It wasn't cheap either... and boy was it loud!! Only if I knew I would upgrade to TT setup after a year, I would have bought Greddy Evo TT, which I have on right now... 
Last edited by leeboyNY; Jan 1, 2009 at 08:35 AM.
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yes, i was refering to your custom exhaust and thanks for the info. As for nightcrawler, im sorry your having issues with the car but thats how things go sometimes. Just stick with it and im sure everything will turn out great.
Took a ride in nightcrawler's Z, car runs smooth. one thing i noticed, his car got the torque but missing tons of HP (I'm assuming 60-80hp) ... his AFR gauge is broken so we couldnt get a proper reading, however, I'm pretty sure the car is running very rich. no boost/vaccum leaks. boost is around 6-6.5 psi which is lower than what it should be making.
that being said, from the way his car moves you can tell the car is holding too much back pressure (tons of tq but not enough hp).. his restrictive exhaust is contributing to this. the APS ST is VERY sensitive to back pressure, thats the first thing i told him when he was planning to install the kit. once the exhaust issue is solved and properly tuned I'm sure it'll be a night and day difference.
that being said, from the way his car moves you can tell the car is holding too much back pressure (tons of tq but not enough hp).. his restrictive exhaust is contributing to this. the APS ST is VERY sensitive to back pressure, thats the first thing i told him when he was planning to install the kit. once the exhaust issue is solved and properly tuned I'm sure it'll be a night and day difference.
...
Zivman
I have no idea what the hp numbers would be. What I can tell you is that you are choking your setup. The APS ST is known for being very sensitive to exhaust back pressure. It is clear you are running a less than desirable exhaust setup, and make less boost than you should be. Lower boost will equate to less air flowing through the motor, which can equate to rich AFRs and low power.
what is the boost level i should be in ??
That said, I still think you have something else contributing here. Like I previously said, I don't think the alignment solved your previous issue(s). do you have any engine lights remaining, or stored codes?
No engine lights, no stored codes, as i sai before i took the car to Nissan dealer in dubai, and asked a freind of mine who works their to check the lights i have and get the codes, and he said everything is right except of the steering angel sensor and that we have to set it up again. and he did the setting with the console while the car driving straight. i don't know if this is the right way but i cant see any codes or errors.
and i am not paying for the EVC, a freind of mine gave it to me as a gift
In that case, sell it and buy what is needed for your car -> a proper exhaust
it isnt that easy to sell stuff in here ...
i might do the mid-pipe fabrication thing. i cannot afford a new APS ST exhuast as of now.
Sell the EVC and your current exhaust to get a proper exhaust setup
You are really putting the cart before the horse here. Currently you don't have any need for it. Even with a fully functioning setup, you really don't have a need for it. Sell this and use the money to buy the exhaust you need. The unichip and boost solenoid that come with the kit are more than capable for your setup. If properly tuned, the unichip will do a fine job with your boost control.
actually i will be using the new Unichip version Q+ . local tuner here doesn't do any kind of re-tune for the version that comes with the APS.
First and foremost you need to address the exhaust issue. If you are short money, why would you spend money on a tune when your car is in this status? In my experience a tune will run you 400-600 bucks -> or half of the cost of the APS ST exhaust. I am telling you from experience, the supplied tune is good.... welll at least good enough you could run on it for a few weeks or even a couple months till you save up the money to tune. What I am getting at here is BUY THE EXHAUST YOUR CAR NEEDS!
will defently do
thanks for the advices buddy, appreciate it.
[/QUOTE]
I have no idea what the hp numbers would be. What I can tell you is that you are choking your setup. The APS ST is known for being very sensitive to exhaust back pressure. It is clear you are running a less than desirable exhaust setup, and make less boost than you should be. Lower boost will equate to less air flowing through the motor, which can equate to rich AFRs and low power.
what is the boost level i should be in ??
That said, I still think you have something else contributing here. Like I previously said, I don't think the alignment solved your previous issue(s). do you have any engine lights remaining, or stored codes?
No engine lights, no stored codes, as i sai before i took the car to Nissan dealer in dubai, and asked a freind of mine who works their to check the lights i have and get the codes, and he said everything is right except of the steering angel sensor and that we have to set it up again. and he did the setting with the console while the car driving straight. i don't know if this is the right way but i cant see any codes or errors.
and i am not paying for the EVC, a freind of mine gave it to me as a gift
In that case, sell it and buy what is needed for your car -> a proper exhaust
it isnt that easy to sell stuff in here
...i might do the mid-pipe fabrication thing. i cannot afford a new APS ST exhuast as of now.
Sell the EVC and your current exhaust to get a proper exhaust setup
You are really putting the cart before the horse here. Currently you don't have any need for it. Even with a fully functioning setup, you really don't have a need for it. Sell this and use the money to buy the exhaust you need. The unichip and boost solenoid that come with the kit are more than capable for your setup. If properly tuned, the unichip will do a fine job with your boost control.
actually i will be using the new Unichip version Q+ . local tuner here doesn't do any kind of re-tune for the version that comes with the APS.
First and foremost you need to address the exhaust issue. If you are short money, why would you spend money on a tune when your car is in this status? In my experience a tune will run you 400-600 bucks -> or half of the cost of the APS ST exhaust. I am telling you from experience, the supplied tune is good.... welll at least good enough you could run on it for a few weeks or even a couple months till you save up the money to tune. What I am getting at here is BUY THE EXHAUST YOUR CAR NEEDS!
will defently do
thanks for the advices buddy, appreciate it.
[/QUOTE]
what is the boost level i should be in ??
You should see ~10 psi peak with a slight taper to 9 - 9.5 psi
No engine lights, no stored codes, as i sai before i took the car to Nissan dealer in dubai, and asked a freind of mine who works their to check the lights i have and get the codes, and he said everything is right except of the steering angel sensor and that we have to set it up again. and he did the setting with the console while the car driving straight. i don't know if this is the right way but i cant see any codes or errors.
OK, that would solve it, you can have the dealer zero out your angle with consult. This is different than a standard alignment
it isnt that easy to sell stuff in here
...understandable
i might do the mid-pipe fabrication thing. i cannot afford a new APS ST exhuast as of now.
That will help, but I doubt you will be exactly where you want to be.
actually i will be using the new Unichip version Q+ . local tuner here doesn't do any kind of re-tune for the version that comes with the APS.
Honestly, keep the standard unchip that the kit came with. Don't buy any sort of new EMS and use that money for the exhaust. The out of box tune is good (assuming you get the APS ST exhaust) and will be better than an improper exhaust setup paired with a more capable EMS. I don't understand how your tuner can tune the Q+, but not the standard?
10 psi with stock block ???
Honestly, keep the standard unchip that the kit came with. Don't buy any sort of new EMS and use that money for the exhaust. The out of box tune is good (assuming you get the APS ST exhaust) and will be better than an improper exhaust setup paired with a more capable EMS. I don't understand how your tuner can tune the Q+, but not the standard?
i asked him the same question, and he simply said "we tune only the new versions Q and Q+only, anything before that we dont have access to it."
Honestly, keep the standard unchip that the kit came with. Don't buy any sort of new EMS and use that money for the exhaust. The out of box tune is good (assuming you get the APS ST exhaust) and will be better than an improper exhaust setup paired with a more capable EMS. I don't understand how your tuner can tune the Q+, but not the standard?
i asked him the same question, and he simply said "we tune only the new versions Q and Q+only, anything before that we dont have access to it."
10 psi with stock block ???
Honestly, keep the standard unchip that the kit came with. Don't buy any sort of new EMS and use that money for the exhaust. The out of box tune is good (assuming you get the APS ST exhaust) and will be better than an improper exhaust setup paired with a more capable EMS. I don't understand how your tuner can tune the Q+, but not the standard?
i asked him the same question, and he simply said "we tune only the new versions Q and Q+only, anything before that we dont have access to it."
Honestly, keep the standard unchip that the kit came with. Don't buy any sort of new EMS and use that money for the exhaust. The out of box tune is good (assuming you get the APS ST exhaust) and will be better than an improper exhaust setup paired with a more capable EMS. I don't understand how your tuner can tune the Q+, but not the standard?
i asked him the same question, and he simply said "we tune only the new versions Q and Q+only, anything before that we dont have access to it."
if they had a dos based computer, they should be able to tune the standard unichip. Regardless, run the stock tune on the supplied unichip. Put the money you have saved towards a proper exhaust (APS ST exhaust). Run it for a few months and save up to buy a new EMS and tune.
Here is the boost curve from APS' site. In comparison to that curve, the car I drove was running ~ 1 psi more boost
Last edited by Zivman; Jan 2, 2009 at 02:54 PM.
10 psi with stock block ???
Honestly, keep the standard unchip that the kit came with. Don't buy any sort of new EMS and use that money for the exhaust. The out of box tune is good (assuming you get the APS ST exhaust) and will be better than an improper exhaust setup paired with a more capable EMS. I don't understand how your tuner can tune the Q+, but not the standard?
i asked him the same question, and he simply said "we tune only the new versions Q and Q+only, anything before that we dont have access to it."
Honestly, keep the standard unchip that the kit came with. Don't buy any sort of new EMS and use that money for the exhaust. The out of box tune is good (assuming you get the APS ST exhaust) and will be better than an improper exhaust setup paired with a more capable EMS. I don't understand how your tuner can tune the Q+, but not the standard?
i asked him the same question, and he simply said "we tune only the new versions Q and Q+only, anything before that we dont have access to it."
Last edited by leeboyNY; Jan 2, 2009 at 06:31 PM.
i am sooo pissed, my car not yet running well.
yah update on the issues. i know your waiting on exhaust but that wont drasticly affect the way the car runs, i know becuase i had a stock exhaust for 6+ months on the kit. btw im running the aps 33" dual with custom y pipe and im getting nice numbers, just another option
Last edited by terps; Jan 15, 2009 at 12:45 PM.
honestly you could always buy a utec off a vendor, get a tune from them(all tuners save thier tunes to my knowledge and im sure their is a bone stock tune for the aps kit, **** dave@function might have mine), pay the $$$ to the tuner, and the will email you it and it will take out the tuning issue aspect. not 100% what you want but it will help you trouble shoot the issues and the u.s. got some tuner with more knowledge with these kits than the UAE
thanks buddy.. i will consider that for sure .
appreciate ur help. i will check the car tomorrow as my guy in here said he will go through the install one more time and then we will see how it goes. will update the thread for sure.
appreciate ur help. i will check the car tomorrow as my guy in here said he will go through the install one more time and then we will see how it goes. will update the thread for sure.