I'm officially at a loss on this...So are shops, the dealer, my friends etc etc.

For some time now, I have been having problems with my evo in many departments...

IE:
Car runs 10.0 and lower until 6krpm then shoots up past 14 and higher for the A/F
It idles at 1300rpm...Has lost over 50whp.

Compression reads as

Cyl 1 -159
Cyl 2 - 111
Cyl 3 - 180
Cyl 4 - 180

and yes I tried putting some 30w oil into the cyl to check for a bad seal...stayed the same...We have done wet compression checks too. Same.

Head gasket has been changed numerous times...Throttle body gaskets and valves are fine. Coolant has no oil in it, and the lines are fine too.
No boost leaks (car still holds 21-22psi strong). Head studs are in good and tight and not stretched (new)

I've had shops pull my motor apart (including myself) time after time. Piston rings are fine. the motor is in good clean looking shape.

So I was thinking, ok maybe out of nowhere my car doesn't like my tune anymore...ok...so I take that off..even put the car back to 100% stock still exactly the same.
So i'm at a complete loss here. I dont know what else to look for or do.

Anyone have any ideas?

 

leak down?

 

Looks like you need to spend some time with a micrometer and feeler gauges. You have low compression in 1-2 cylinders --not to over state the obvious. Either you have a valve problem, a ring problem or you have a cylinder wall thats out of shape for some reason. If this isnt for you, have it rebuilt--not by your friends but a competent machine shop that will check all tolerances and make sure everything is is spec. My guess is, when you find and fix the problem you will be able to adjust the idle/fuel problem.

 

yeah that was my last choice of options...Was just hoping to never have to do that...But the way I see it...it drives for right now and will last until I pick up my new daily...Cause then I will start the rebuild....just wanted to get it working right for now and get that wow it's fast feeling back lol.

 

If you did a wet test and it's still the same, check the head. Inspect the valves and seats.