Hi,

05 plate WRX (not Sti) forge dump vale ecutek remap revolution exhaust etc.

The problem is that the acceleration is a bit stuttery, a bit jumpy , so not smooth at low speeds, and the dump valve seems to be going off more often . The engine is also hunting whilst on idle, i.e it starts at 800rpm then dips to 300rpm then back upto 500rpm. I have just changed to Shell V Power from Tesco 99, have been known to put BP in etc

Any ideas ?

Thanks in advance

 

hi it may be u have a iffy idle control valve prob or give it a petrol cleaner flush and make shure u dont have a air leak or maby a iffy tps

 

Forge recirc or VTA? Leaky VTA causes idle problems as described (as its an air leak!).

I know lots like it, but mine runs like cr@pola on V-power.

Simon

 

Forge vent to atmosphere (VTA)....are they serviceable items .ie if i undo all the allen screws on the top and give it a clean will it fix it or does it need replacing??

Ans