When coming to a halt the revs drop very low on my car, to the point sometimes the defi`s beep and the ignition lights flash on, it then hunts and goes back to normal.
Spec is:
P1, sti panel filter, blitz dump, nur spec centre + backbox.

Only had the car a day so I havent had chance to take things off etc to test, what may be the likely reason?

 

clean your idle motor assembly

 

Best suggestion. Take it to a specialist and put it on select monitor. Get a diagnosis.

On my car, I switched the MAF (nope, no difference), opened up the idle control valve (found nothing untoward). On mine it was the lambda sensor. Which I found out by taking it for a service at Subaru4you and mentioning that I had a running problem.

I could have saved myself a lot of angst and worry just by taking it there in the first place.

J.

 

I had the same problem, was pulling up to traffic lights and car just wanted to nearly cut out. Changed my MAF sensor and now car is running good.

 

Ok thanks, taking it to the garage tomorrow to remove the dump and check it over.
Ill report back

 

I had same problem, i clean the MAF and the throttle body/butterfly regularly and that seems to help

 

Took the dump valve off and everything is perfect.