R33 Gtst Flatspot

[whistle]

Hi all, I have a r33 gtst which was running fine, until i installed a greddy style intake manifold and 80mm T/B.

After installing the intake i now have a very noticable flat spot, when you first accelerate the car goes to die then the revs pick up.

Also i had to disconnect one plug from the idle speed motor cause it was idling over 1100rpm. (The flat spot didn't go away with this plugged in, before anyone asks).

Im running a adaptronic ecu (e420c).

Can anyone please help as this is becoming a pain in the ass to drive.

Thanks David

Edited May 17, 2009 by whistle

[conan7772]

Hi all, I have a r33 gtst which was running fine, until i installed a greddy style intake manifold and 80mm T/B.

After installing the intake i now have a very noticable flat spot, when you first accelerate the car goes to die then the revs pick up.

Also i had to disconnect one plug from the idle speed motor cause it was idling over 1100rpm. (The flat spot didn't go away with this plugged in, before anyone asks).

Im running a adaptronic ecu (e420c).

Can anyone please help as this is becoming a pain in the ass to drive.

Thanks David

G'day,

That's a huge throttle body, you need more air flow to make it work.

What turbo do you have ?

[STATUS]

was tuned after the plenum? also check map sensor source location.

[MBS206]

Retune the car.

That's the issue.

Running a map sensor, on an engine you just changedVE of.

[whistle]

The car has not been re-tuned yet. Does anyone know anyone who is good at tuning an adaptronic ECU?

Thanks