sti69

iTrader: (1)

Hi guys after waiting many months to find the time to have my de-cat fitted (MY94 WRX STi),i finally had it done . But now im hitting fuel cut at 1.3bar although it has a dawes device fitted to maintain 1.2bar (decided to fit one because i was hitting fuel cut when i had to use tesco 99 fuel a while ago. Anyway before the de-cat it ran perfect and holding 1.2bar in every gear,so my question is what do i need to do to cure this problem?

Should i remove the dawes device and let the 3 port valve sort it out or should i remove the battery for a while (much easier than climbing under the dash to connect those reset wires!!).

Cheers Guys!

No_9

Did you adjust the dawes after the de-cat?

Although the general workings of a dawes would seem to logically indicate that its like a cap up to a set point of boost and then springs open, changes in the flow system, exhaust, turbo etc can cause the levels to change, or simply that the dawes isn;t reactign quick enough as the turbo spools quicker with the cat out?

Try winding the dawes out to get it to sit at the boost levels you were getting before.

Ross

harvey

iTrader: (48)

As above. With the de-cat your engine is that much more efficient and producing more boost so if you screw the Dawes out a little bit you will get back to where you were previously and all will be well as regards boost control.

sti69

iTrader: (1)

Cheers Guys

I'll give it a go and see what happens!!!