Hey guys, just take my evo from the shop, good power, good idle everything runing fine except for one detail: during take off at a stop light engine tries to stall, more throttle than normal needs to be applied.
Ive been told is an iscv issue because when the RPMs go below the desired RPM, iscv tries to compensate, making more comfortble the take off.
Is that true? How can i verify my settings are correct?
Iscv is new as well as the clutch (oem), checked injectors flow, they are equal, can the throttle plate coat be a problem? Its completly lost.

Please help !!!!!

 

You just picked it up from the shop? You got it tuned rt? Take it back to the shop-their tune needs work.

 

No ECU flash, just engine repair, i thought it might be the icv, bought a new oem one, it did not change at all.
​​​​​​​What else can it be?

 

Did you ensure the rubber gasket on the ISCV was installed properly when you installed the new ISCV? That would cause a boost leak if the gasket is not there.

 

Also if they disconnected the battery, the ECU will reset and will take some time to settle down again. Give it a couple of days and see if its still an issue

 

Ill second that.

 

Yes the special Oring is installed properly, UPDATE: made a boost leak test, everything fine no leaks.
Ive been driving it for almost a week, no changes at all. Already tried disconnecting negative battery no changes.
Any ideas?

 

Can you make a video and post it here so that we can see what actually is happening ?

When you come to a stop , the idle goes up and down ?

 

i'm actually having a similar problem to this but the issue happened when switching my car to SD on tephra's 94171715 rom where the car created a lean condition from taking off at a dead stop. so far I have raised my SD MAP Sensor and VE calibration in the 101.0 KPA range up 6% which has taken away most of the issue. does this sound or feel like the issue you are having?