Thread: My08 STI
View Single Post
  #196  
Old 17-02-2015, 06:14 PM
s20525xxx's Avatar
s20525xxx s20525xxx is offline
STI Master
Member
 
Join Date: Sep 2010
Location: Perth
Posts: 728
Thanks: 22
Thanked 41 Times in 41 Posts
s20525xxx knows their stuff
Default

Quote:
Originally Posted by Intra View Post
How did you measure the AFR and was that past 60% throttle?

ECU learning is only ever done in closed loop, if its "learning" in open loop i would be worried.

That said, AFR's in open loop should be pretty spot on as its too late during high demand to correct. When you're on the noise the AFR, Timing, Boost need to be spot on otherwise you're doing damage or not maximizing power.
Fiest of all. I rely on AEM wideband, blitz ecu reader, Torque knock detector (read from ecu knock correction) and TurboXS knocklite (standalone knock analyser).

Only during the very early of this "learning" stage, car has MAX of 4 degree of timing correction (usually two), and always tested on 3rd or 4th pull on WOT. Boost is not adjusted according to Defi gauge.

Car has beening doing this since MMS did my car (which ran 9:1 afr at 102 duty cycle lol, but thats another matter). I never felt power decrease in anyway.

Maybe this is a new generation ecu thing? Anyone has the same gen wrx/sti noticed this?

using the Perth-WRX mobile app
__________________
MY08 STI 422whp at 1.5bar on E85, built by Diversion Garage, assembled and tuned by EvoR

Update from new owner: 375whp at 1.4bar on 98, at Tokyo Motorsport
Reply With Quote