think i might have lost power with the plenum spacer...?
#1
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think i might have lost power with the plenum spacer...?
2 days ago i had my Motordyne plenum spacer installed (5/16) with isothermal and copper. i also already have nismo exhaust, labree test pipes, and nismo cold air intake. when we put in the spacer, at first it felt laggy, but i know at first it usually does that until the ecu reads the mods right. well after a day of driving close to 200 miles just to get everything broken in, the next day i went out again and it only seemed a little bit better than the day before. yesterday i realized that we didnt re-set the ecu, so we did by un plugging the negative (-) plug from the battery. the sound seems a little bit better now, but still doesnt feel like i have all the power i had with just my other 3 mods, especially in 1st and 2nd.
i have an auto 04' touring 350 and have the 3 mods listed above.
can anyone tell me some reasons this might feel this way?
could it be because it doesnt run right with cold air intake?
or is it just not something thats not good on auto 350's?
or maybe theres something that we messed up on the install? like tightening the bolts too much or not doing something...?
or do i just need to be patient and keep driving around for another few days until it fully runs right?
ANY HELP WOULD BE APPRECIATED, BECAUSE IVE HEARD GREAT THIS ABOUT HP AND TQ FROM PLENUM'S AND MOTORDYNE. THANKS A LOT.
i have an auto 04' touring 350 and have the 3 mods listed above.
can anyone tell me some reasons this might feel this way?
could it be because it doesnt run right with cold air intake?
or is it just not something thats not good on auto 350's?
or maybe theres something that we messed up on the install? like tightening the bolts too much or not doing something...?
or do i just need to be patient and keep driving around for another few days until it fully runs right?
ANY HELP WOULD BE APPRECIATED, BECAUSE IVE HEARD GREAT THIS ABOUT HP AND TQ FROM PLENUM'S AND MOTORDYNE. THANKS A LOT.
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I've heard some people here say that a plenum spacer and CAI don't mix well.
If you had a leak you would either hear it or have a rough idle.
I would leave the battery disconnected over night to resest the ECU. If that doesn't work I'm not sure what else to try.
Maybe someone else here can help you more.
If you had a leak you would either hear it or have a rough idle.
I would leave the battery disconnected over night to resest the ECU. If that doesn't work I'm not sure what else to try.
Maybe someone else here can help you more.
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Originally Posted by Chebosto
do the actual ecu reset procedure, not the battery terminal method.
http://www.technosquareinc.com/350reset.htm
http://www.technosquareinc.com/350reset.htm
Very useful! Thanks!!!
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Originally Posted by Chebosto
do the actual ecu reset procedure, not the battery terminal method.
http://www.technosquareinc.com/350reset.htm
http://www.technosquareinc.com/350reset.htm
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if i just disconnect the battery for 12-24 hours and reconnect it, about how long or how many days of driving around should i wait for it to re learn correctly?
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Originally Posted by j24shadow
if i just disconnect the battery for 12-24 hours and reconnect it, about how long or how many days of driving around should i wait for it to re learn correctly?
#10
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First, I would ask a mod to merge both of your threads into this one. https://my350z.com/forum/2003-2009-nissan-350z/176814-think-i-might-have-lost-power-with-the-plenum-spacer.html
Then I would check to make sure the rubber oil fill ring is not caught in the edge of the plenum causing a vacuum leak. If that is fine, check for any other leaks using carb cleaner (don't forget the iso thermo gasket could be leaking as well, so check that too). Next properly reset the ECU from the info on the Technosquare site like it says above.
Chris
Then I would check to make sure the rubber oil fill ring is not caught in the edge of the plenum causing a vacuum leak. If that is fine, check for any other leaks using carb cleaner (don't forget the iso thermo gasket could be leaking as well, so check that too). Next properly reset the ECU from the info on the Technosquare site like it says above.
Chris
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I have the same vehicle. The ECU sucks. That is your problem. The 04 ECUs are the worst of all of them. It will not let the mods do their job. I put on a Kinetix plenum and pop charger and test pipes and gained 5hp. I ran a 13.39 before these mods and haven't been closer than 13.5 since. I also put on the 3.5 rear. I did go from steady 13.7 to steady 13.5's
The peddle method is crap. It doesn't really do it right. I'm not sure about the battery method but, if you have the factory reset it, that is the way to go.
If there is a leak you will hear a whistle.
I think the stock air box is a better choice than CAI also. I actually lost 8hp and 7tq on a dyno with a CAI
The peddle method is crap. It doesn't really do it right. I'm not sure about the battery method but, if you have the factory reset it, that is the way to go.
If there is a leak you will hear a whistle.
I think the stock air box is a better choice than CAI also. I actually lost 8hp and 7tq on a dyno with a CAI
Last edited by DayBlueZ; 03-09-2006 at 01:27 PM.
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Originally Posted by 99atlantic
if you pull the battery for 24hrs and it still is sluggish, then that means there's a leak or something else is wrong. the ecu won't have dummied down the a/f at that point, so there's something else that is wrong.
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Originally Posted by trey.hutcheson
Uh, no. I've reset my ecu twice, and both times it was dog slow immediately afterward. It took a good thrashing to get the car anywhere close to where it was before the resets.
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Originally Posted by Hydrazine
After seeing several dynos of long tube CAI's, I'm no fan of them.
since i got my 5/16 spacer im in the process of going back to my OEM intake with this new hi flow sports nismo filter.
i had the nismo CAI and up top the car felt very strong the difference with the spacer was noticeable but down low it felt a little different not bad just like it took a little longet to jump to life. the other reason is with the spacer the CAI rubs my hood
so im gonna try the short intake with this filter and see what happens
Last edited by **; 03-09-2006 at 09:34 PM.
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Originally Posted by mc350z
since i got my 5/16 spacer im in the process of going back to my OEM intake with this new hi flow sports nismo filter.
i had the nismo CAI and up top the car felt very strong the difference with the spacer was noticeable but down low it felt a little different not bad just like it took a little longet to jump to life. the other reason is with the spacer the CAI rubs my hood
so im gonna try the short intake with this filter and see what happens
i had the nismo CAI and up top the car felt very strong the difference with the spacer was noticeable but down low it felt a little different not bad just like it took a little longet to jump to life. the other reason is with the spacer the CAI rubs my hood
so im gonna try the short intake with this filter and see what happens
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Originally Posted by mc350z
since i got my 5/16 spacer im in the process of going back to my OEM intake with this new hi flow sports nismo filter.
i had the nismo CAI and up top the car felt very strong the difference with the spacer was noticeable but down low it felt a little different not bad just like it took a little longet to jump to life. the other reason is with the spacer the CAI rubs my hood
so im gonna try the short intake with this filter and see what happens
i had the nismo CAI and up top the car felt very strong the difference with the spacer was noticeable but down low it felt a little different not bad just like it took a little longet to jump to life. the other reason is with the spacer the CAI rubs my hood
so im gonna try the short intake with this filter and see what happens
please tell me how the hi flow filter works for you when you put it in, because from how your explaining how the spacer worked for you and the CAI touching the hood, i can relate to that so let me know how you like it and how you think it is running. thanks.
#19
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Hack your Nismo into a short ram, buy a Popcharger or put the stock air box back in. 10whp in my car on the same dyno with a Popcharger+plenum(same thing) over the AEM+plenum, no tuning and much better throttle respone. Ive told several people about this and they all were doubtful but after going short ram they believe me. Try it and see for yourself....