could anyone help me with car. my boost or car lag problem? my car was running good with a setup of kkk k04-15, ecu upgrade, diverter valve, fmic, etc.... after couple runs with my guy. next day i turn down the boost cause it was at 18psi. next day i notice that my car was running funny? when i floor the car it picks up fast and sluggs off and the boost is not working? i been running good at 18psi for almost a year no problem. but now even if i turn the boost up max it sluggs? but when i turn it low to about 7-10 psi it runs ok but no power at all just like stock? please help me i really need some advice?

 

what year is your car? also, im assuming you installed a manual boost controller?

 

99.5 yes a manual boost controller is installed.

 

i dont know if you installed the boost controller, but i would try taking out the boost controller and reconnect the n75 and see if the problem still occurs. also, what ecu upgrade do you have?