Hey guys honestly I had a minor accident my evo so parts damaged were ac condenser, radiator and Intercooler. Then now its all repaired, all parts were OEM fit except for the intercooler. After repairing the car there has been a problem with the battery car doesnt charge, so I replace the alternator with an evo 5 alternator I guess its a 90 or 100+ ampheres(its the only available alternator at that time here and I would need to order/import like for a month, a stock one for evo 7-9).

Now its all good with the battery but, the problem now is when I hit on the gas at neutral I hear misfires at around 3500 rpm, and when i floor the gas at gear 1-5 I hear sometimes at random gear misfires for like half a second and rpm goes up again. And now at 4th to 5th gear theres really no pull but I hear the turbo its like the turbo is boosting but its hard to get fast. And like top speed is 120/kph(boosting at 0.8bar only) mixed with misfire and boost issues the car is not like this before the minor accident.

To cut the story short the car got really slow. I already bought an oem Intercooler and an evo 8 alternator to hope it might fix the boost issues and misfires, and sometimes when i turn the a/c on the rpm goes up and down from 1000rpm to 2000rpm.

Its just really weird I dont know whats happening to my evo

Solution might be to tune it because after the accident it has t been tuned yet. Or might just be the not oem ic and alternator.

Any suggestions or comments would really help me! Thank you!

 

And yes now my evo sometimes doesnt start battery is all good 12.2volt when about to start, but theres no crank. But sometimes it starts. Please help out with suggestions

Set up are basic.

Hks bov ssqv 2
Aftermarket lower upper ic piping
Hks mushroom filter
Hks full exhaust
Pivot volt stabilizer
Electronic boost controller profec 2
Apexi turbo timer
Boost gauge

 

Evo 7

 

Did you perform a boost/leak test?

 

Not yet I dont know how.

 

This video and others will show you how to do a boost leak test