I recently had a Dawes fitted and have been driving around for a couple of weeks without any problems (fitted when running on regular unleaded). Now I've run a couple of tanks of Optimax through the car I keeping hitting the fuel cut-off (only on WOT at approx 3500rpm). Is this a coincidence or would running on the higher octane fuel cause it? hmmm.

 

Could be -but may also be the switch to colder weather is giving you extra boost up to the fuel cut off.

Nick
1997 Forester S/tb

 

Do you know what pressure the Dawes is currently set to?

 

Can't be sure what pressure it's running at as it was fitted by Powerstation on their rolling road using a temporary boost gauge.
I was told it was set at 1.1 bar peak but I'm guessing the higher octane fuel is giving me more boost. I think I'll give them a bell.