Today my friend(who is a tuning guru) and i installed the apexi safc2 on my z. ok i know i am going to get bashed for this but i have to do this to prove all of the people out there that this is a descent product and can be used on a 350z. At first i was skeptical and i did not feel much of a difference as my friend was altering some values on it. As the night progressed we learned your able to permanently save any corrections up to 10%. With this in mind you can alter the vehicles fuel settings at various rpm ranges , both for low throttle and high throttle. my car now idles and daily driving ( low throttle settings) my AFR is a very steady 14.2-14.8 which is ideal.thus increasing my gas mileage. For all of those out there who do not have a wideband, look at my sig mods my car was running fairly rich esp for the rpms i daily drive 0-3,000 rpm .Now other than that i run nitrous on my z ,we went out tonight messing around having fun , my friend was doing a 2nd gear 3,500rpm-6,000rpm pull mini-tune as i should say . Ok so at first i went full throttle at3,500 and the tires burned and it felt pretty descent , literally my friend grabbed the safc2 and worked his magic and laughed and said "do it again". I chuckled and waited for a clearing in 2nd gear again at the same rpm i went WOT , and the car literally kicked sideways honestly it scared the Sh** out of me. I was laughing so hard , i know what you guys think "thats pointless to just burn out " but you got to think about practical track settings with good tires. I am simply trying to explaing that an immediate power difference was felt . So now for anyone who wants to bash on taking the cheaper route of a somewhat tune thats all well and good but for those who do not have the grand to spend on a descent engine management and have some tuning knowledge( not even that its as simple as watching the wideband and adding and subtracting fuel in areas) i have your solution. I personally like the apexi safc2 and if anyone has any questions or anything about it just let me know.

 

Interesting......I kinda want one for a while. How does you friend tune it? What setting/value did he change?

 

anyone who is really serious after my friend does some better adjustments with it, he was messing around for the nitrous i would like for him to do one as a daily where i pick up a little power at high throttle and low throttle would be good gas milege, but i know so far for the low throttle settings:
800 rpm -7%
1200 rpm -5%
1800 rpm-6 %
2400 rpm -4%

thats it right now with a very steady 14.2-14.8 AF ratio anything else just let me know

 

dyno sheets?

 

The safc has always had 2 primary things working against it:

It never will work consistently (for tiny corrections it will, for larger corrections the stock ecu always works around it), and 2. it alters timing as a byproduct of altering fuel - so you really never have a real idea as to what you're doing with it, since it also has no datalogging. Going by a wideband is fine, but that doesn't give you a full picture either (though it's better than nothing). There are other things too, but those are the main detractions and why it's not widely used or recommended.

You can add or take away all the fuel you want at idle..the stock ecu will always regulate itself back to the proper afr assuming stock injectors.

It is inexpensive yes, but for a little bit more, you could sell it and get into a used utec and be on a whole other level as far as tuning/logging (without having to cut up your stock harness)

So if its something you already have and you want to put it in for a what the hell type thing, go for it. It's not going to set the world on fire and it will work well enough for WOT runs, but it won't really ever do so consistently.

 

z1 let the bashing begin lol, have you ever used this product? thats why i posted this so all of the vendors can see that it really is an ok product. I personally was tired of everyone saying to get a $800 utec. and honestly the safc2 is relatively cheap. i believe people with bolt ons can benefit greatly, the FI people will not because of the out of range 10% correction.the corrections made at idle will not be overwritten because its within the 10% . its true for corrections over 10% the ecu will overwrite it and i mean really quick like immediately. but for the small corrections its fine . also we learned at WOT any correction can be made and saved. the 10% limit is removed at WOT. no dyno sheets i am still playing with it but when i get it pretty set i will prob put it on a dyno and let my friend mess with it. there is also not a wiring diagram for a 350z but i have one so if someone needs one just let me know.Another good thing about this is that it has a knock sensor and i personally can benefit from that since i am spraying.

 

as for Z1 i called you guys a few weeks ago about getting my z tuned just trying to get some estimates , i have been to you guys before for the big z meet and i thought it was a cool facility. I called you, some dude answered i am asked him about getting my car tuned. He literally told me he would not be interested in tuning my car unless i had a haltech. i asked him how much it cost? and he proceeded to ask me how soon i would be looking at getting it done , i replied with several weeks. he said call back then and hung up in my face. not to bash on you but you guys have poor customer service.

 

The fact that you're using nitrous and you're too cheap to pay for real tuning just makes me question anything you're saying. And your "tuning guru" friend should know better than to think that solution was good for the money. A used UTEC would run you 500-600 and he could have tuned it for you if he was an actual pro.

 

First, I'm not bashing you in any way, so don't read so much into it. You've never been to us nor called us, because we're in NY and we only work on our own in house stuff. You probably have us confused with the Z1 down in Georgia - we are completely unrelated companies. If I wanted to bash you, I would, but there isn't any point in that. I'm simply giving out info for those who care to use it. If someone called us and asked if I would recommend an SAFC on a Z, I would tell them very simply "no" - and we have them in stock as well. I would tell that person the same thing I am going to tell you:

I've used the SAFC (original dial version) and the SAFC2 for longer than you've likely been driving so I am intimately familiar with how it works, and have used it before on many cars. There are some cars it works better than others. The Z just isn't one of those cars. Again, if you like it, that's good for you.

Get yourself a cipher and watch how the stock ecu works its way around things for yourself - it's not my car and if you are happy with it, more power to ya. But one week of using it does not an expert make A used utec by the way, is in the $500 range, so only slightly more expensive than a new safc, is totally plug and play, does timing and fuel, datalogs, integrates with a wideband, etc. If you're not into self tuning, I would have personally gone the UpRev route, as you'll net yourself a very consistent tune that doesn't change like the safc will, but again, you live and you learn. A used UTEC is slightly more expensive yes, but it also allows for tuning on a totally different level. The UpRev I believe is comparably priced, but comes with a powerful datalogger, and they make the changes for you based on hard, recorded data. They are not at all comparable products.

 

lol sorry for the mix up z1 and i respect what your saying . as for mize i just chuckled

 

I honestly think that Safc2 isn't the best tunning device out in the market. I currently have unichip on the car in conjunction with my Safc2. My tunner told me that eventhough its set at zero, it will still affect the stock ecu and unichip to some degree, which, i belive its true because my car sometimes runs fairly rough, and sometimes ir uns like champ. When it runs rough, I would do the ecu reset.....then voila, the car runs like champ. Thats when I know that SAFC2 has some affect to the fuel ratio to some degree.

 

And I'll chuckle when you blow an engine with a 100 shot because you're too ignorant to actually tune your car for it. Think the SAFC is gonna pull timing on the fly when you're spraying? Have fun with your block replacement.

 

already got forged internals on the way my man. thanks for the input though i can tell your very concerned. lol but truly i work at nissan i use the hand held consult to pull timing. you will be ok daddy i promise

 

nevermind this thread is pointless too many haters. delete this thread please

 

this worked great when i was procharged at 7psi....simple...tricked the ecu with no problems and never let the ecu take ova like z1 said.....good job

 

see. i believe the haters have never used it. my air to fuel is dramatically better after a day of alterations. both high and low throttle and u get to save 2 seperate maps. so i have a daily and a nitrous. you can adjust high at low throttle percentages and go from there its really simple and honestly fun.

 

not to mention i am getting an additional 3 miles per gallon daily driving

 

So you paid for forged internals but your not willing to spend a couple hundred more bucks for better engine management?

 

Might as well just get a resistor inline with the MAF for all the good the SAFC2 is doing you, what with the stock ECU learning it's way around it.

But hey, if your 'butt dyno' feels more whp, it must be true, right?

 

delete this thread