lean running supra??

[pwpanas]

Originally Posted by krahs912

I Have 95 supra that runs lean and pings bad. have a Apex i AFC Neo Fuel Management on full rich made it better but still pings, just less.(93 octane) Idle is up and down. cant find any leaks in ic piping or any vacuum lines off. i think it suckin in unmertered air but cant find where. i did all these mods last year and car ran great till a month ago. car is adult drivin and only has 40k. any ideas???


Mods
Apex i AFC Neo Fuel Management
greddy fmic
hks exhaust
Greddy Profec B Spec II Boost Controller
boost tuned down to 10psi (was runnin 16-17)
hks ssqv

Imho, step 1 is to bypass the AFC and see if it still has the problem. Also check the vacuum line going from the plenum to the oem FPR (fuel pressure regulator). Lastly, if those suggestions don't help, you'll need to do a boost leak check by pressurizing your charge-air system.