i got my car tuned a few months ago by uprev and they did that thing that keeps my throttle body open 100% all the way to redline, and set my afr's to 12.8. Now for some reason it feels as if my car pulls better with only about 3/4 throttle as compared to WOT.... could it be that i am getting too much air in and maybe nissan made the TB close about 20% up top for a reason??? even though shouldnt the tune have been able to correct the "bogging" with the extra air????

 

the tune should have compensated for the extra throttle. Classic case of you getting used to things and not noticing minute differences that stand out when you first upgrade.

 

if i had just got used to it then why would 3/4 pedal feel a bit faster than WOT?? idk... thanks for your input. anyone else have any ideas?

 

A/F ratio is off at WOT so the ECU is pulling timing?

All I can think of.

 

anyone else???

 

Your welcome

 

too much air is not the problem. lOl! If your car was tuned to 12.8 a/f on wot dyno runs and that is what it still is, your ecu is probably pulling timing. Im guessing you don't have a wideband so getting back on a dyno is your best bet.

 

so wait. why are you running rich again? FI?

 

12.8 is a bit rich for N/A...ask them to take some fuel out

 

thanks, for your input i didnt meen for it to sound like that

 

ya thats what i said, but the guys at uprev told me that 12.8 was a good place afr for bolt ons??? I think 13.0-13.2 would be much better....

 

I agree. Did you get a dyno graph with afr?

 

yes i did. im supposed to be getting another dyno done tomarrow by another shop so if i do i will post up the dynos.

 

heres the dyno. the guy at the shop said i should be able to see a couple more hp if i lean it out to 13.0-13.2 just as i thought. And dam the power just drops off nasty right after peak power. i need cams!!!

 

bump

 

isn't their a uprev thread on here. You should probably post directly on there you will most likely get more responses, just and idea.