Vq25det Rough Idle

[conan7772]

Just had the AMPerformace intake installed along with new plugs.

Went for LFR7AIX.

I've always had low idle since I bought the car and the occasional stall.

Now after this work, idle is rough and way lower.

Touch the throttle and there's an initial increase in vibration, then it seems ok.

Driving is fine, only idle and take off is bad.

I vaguely remember reading somewhere, aftermarket intakes can cause this but I can't see why they would.

Or is the different spark affecting the idle.

Anyone had got any ideas.

Cheers

[joshm35]

Id say spark plugs

[joshm35]

Or check afm plug and do an ecu reset

[Brick]

Maybe try and idle relearn

[Lakes101]

I'd say it's need the ECU to re learn to comps date for the new intake. But an idle reset and throttle relearn would help to.

[scotty nm35]

More likely you just swapped a couple of the coil plugs around, it's pretty easy to do.

[conan7772]

I had Craig do it while the intake was off.

Wouldn't it drive like shit right through the rev range if that was the case ?

[Equilibrise]

Check vacuum lines and intake plumbing are all reconnected properly. Intake leaks are the most common idle fault

[scotty nm35]

I had Craig do it while the intake was off.

Wouldn't it drive like shit right through the rev range if that was the case ?

Craig is a Vtard now so who knows.

Check vacuum lines and intake plumbing are all reconnected properly. Intake leaks are the most common idle fault

Yes, the amount of fuel reg hoses I have seen pop off, it is very common especially once you bump up the boost, or muck around with the BOV.

[conan7772]

Seems to come and go now.

Looks like ECU trying to correct it.

Anyway, very happy with it.

Feels stronger for sure and got some nice induction and re-circ sounds coming through.