HELP! New intercooler install but now revs to 5k on its own!
HELP! New intercooler install but now revs to 5k on its own!
Have an 05 EVO VIII that came with Injen intercooler piping with the stock old dirty EVO intercooler. Last night I installed a new larger intercooler on it and kept that same Injen piping. It used to run perfect but now the second I turn the car on it revs to 5,000RPMs on it's own and won't stop! I assume its a boost leak somewhere but I had one before on the left elbow hose coming out of the intercooler and into the piping next to the ACD pump but last time the car didn't over rev on its own. It would just sputter and rev limit itself around 2,500RPMs just before the turbo would spool and I basically needed to run turbo-less until I fixed it. Now its over revving? I don't get it.
Possibilities:
Vacuum/boost leak?
IACV sensor loose or dirty?
TP sensor loose or dirty?
Air leak in throttle body gasket?
I did have a good tune before but now I need another one?
(^Those are possibilities I just researched online^)
Someone please help! I'm out a car!
Possibilities:
Vacuum/boost leak?
IACV sensor loose or dirty?
TP sensor loose or dirty?
Air leak in throttle body gasket?
I did have a good tune before but now I need another one?
(^Those are possibilities I just researched online^)
Someone please help! I'm out a car!
Only thing I took off where those two elbow looking hoses that connect the intercooler to the front piping and the hood latch assembly. Not thinking its a leak but I may have found the problem:
"did you reset the ECU? Unplug your battery, touch the positive terminal to metal, then re-attach. Your ECU probably can't compensate right away with all the new airflow/pressure drop. It will reset all its learned paramiters, and after driving around a bit it should re learn and adjust and run much better. You "shouldn't" need a tune. Anyway, I should let you know I had the same issue when I switched my 2g side mount to an EVO front mount. The second I started it up it went nutty and tryed to idle at like 4,000RPMs! So I figured the MAF was wacked out because of the difference in airflow and the ECU needed to re-learn its flow curve. So, I reset it and WAH LA! It ran perfect. Happens to people when you clean out a clogged intercooler, re-install, or move to a different size."
"did you reset the ECU? Unplug your battery, touch the positive terminal to metal, then re-attach. Your ECU probably can't compensate right away with all the new airflow/pressure drop. It will reset all its learned paramiters, and after driving around a bit it should re learn and adjust and run much better. You "shouldn't" need a tune. Anyway, I should let you know I had the same issue when I switched my 2g side mount to an EVO front mount. The second I started it up it went nutty and tryed to idle at like 4,000RPMs! So I figured the MAF was wacked out because of the difference in airflow and the ECU needed to re-learn its flow curve. So, I reset it and WAH LA! It ran perfect. Happens to people when you clean out a clogged intercooler, re-install, or move to a different size."
