So I've noticed that for about a few hundred miles, and the issue is still there, my RPM's are hanging. What I mean by that is shifting from 2-3 or 3-4 etc, I let off the gas, push on the clutch but the RPM will just hang there for a second before actually dropping. Can anyone explain this irregular behavior and what can affect it?

 

Check to see if your clutch fluid is low.
As has been noted before, you have to over fill the brake side to fill up the clutch side.

 

Brake fluid is full and brand new.

 

i have the same problem but iac CEL is on now

 

any ideas ppl

 

If you have a code for a bad IAC then that could very well cause the problem. The engine is reciving too much air through the IAC valve, causing the RPM's to hang. I would replace the IAC and see if it still occurs. Whats your VAC at idle? If its lower than normal check for intake leaks as well

 

only since my tune have 2 sensors gone bad! and my vac when driving and releasing the pedal is -19......maybe at idle is like -16 or closer to -19

 

Check for intake leaks, my idle VAC is -20 when warm at idle, when i release the pedal its -22, sounds like you may have a slight intake leak, as well as a bad IAC could be causing your hanging RPMs

 

Are you guys running 9653 tephra roms? Or any evo rom from a 05+, they all have throttle hang issues, that can be ironed out with a few tweaks.

 

is there a thread how to stop it

 

On the 9653 rom, I fixed mine with this : https://www.evolutionm.net/forums/7596260-post61.html

and this : https://www.evolutionm.net/forums/7580026-post11.html

 

+1

This removed my throttle hang also