so sience i bought my evo it has been holding the revs high up when ever i go past the 3500 RPM range i thought this was cause by the the car being so modded and not tuned, so i went ahead and tunned and the car still does the same is IMPOSSIBLE to WOT and shift 100% miss gear all time the revs just stay there is so anoying its making me wana sell this piece of crap of car can any one help

 

Why don't you just have a mechanic check out the car? Anyway it sound like the butterfly valve is sticking.

 

What year is the evo? From my understandings (i think 05+) they added a feature to them. If you go heavy on the gas and then shift it stays at the rpm's for a lil before it drops back down. This is to burn any extra fuel. Any tuner can remove that feature but you need to tell them.

 

I had this issue when my stock clutch started on its way out the door. Went away after i replaced it.

 

Hmmmm, my clutch is starting to take a ****, also likes to stay at high rpms.

 

my clutch grabs good and as for the tune, I tuned the car at AWD and derek took a look at it and couldnt find any fix to it

 

LOL Over reaction id say. Stupid question but did you mess with the idle screw on the throttle body. Try turning it clockwise (in). See what happens. Report back. I had a similar problem, it was like the revs lingered between shifts.

 

no i havent messed with the idle screw

 

This has plagued a few of us, there is a fix once you isolate the issue.
What is your idle RPM?
Is your TB stock and can you verify it is not leaking?
If you are sitting in neutral with AC/radio/headlights on and turn quickly, what do RPMs do?

 

known as throttle hang... can be fixed with ECUFLASH..

i dont know how, i am not a tuner..
search on ecuflash forum

 

you are getting gear lock-out... sounds like your trying to to shift while WOT at high rpms...sounds like gear lock to me. If that is the case you need a twin disc clutch.

 

the throttle body is stock, but yes it is leaking.

my rpms sometimes when i start the car they raise up a lot!

not really because i try something today, if i rev the car above 4K regular driving not doing WOT they still hang

 

how long after you let completely off the throttle are they staying above 4k for?

 

not much but just enough so that when am actually WOT its imposible to shift fast

 

Make sure no lines are laying on the throttle cable/spring. I had that on mine. It wouldn't do it all the time, but that was the cause on mine. A simple visual inspection will tell you if any of the fuel lines are laying on it.