Hi a few weeks ago I had my anti lag on (having a play through a tunnel) dont use this often at all by all means then suddenly the car would not Rev above 4-5k revs no EML on pulled over had a look found all okay continued on my journey to find it would only boost at 1.2bar instead of 1.4 now it will boost between 1bar and 1.2bar I have changed boost solenoid and turbo pipes ect but still no change, car spec vf34 turbo simtek ecu STI tmic ect ect I'm at a stump now

Cheers in advance

 

Not revving past circa 4.5k revs is usually a sign of failed/failing speedo sensor, isn't it? (It's some kind of Subaru failsafe mode).

Does your speedo work correctly?

**** it into Xtreme Scoobies in Boreham - the guys will no doubt suss it in a thrice...... Or maybe even a trice!

 

It winds all the way up to 8k revs now just won't boost at 1.4bar between 1bar and 1.2bar

 

It winds all the way up to 8k revs now just won't boost at 1.4bar between 1bar and 1.2bar

 

I'm stumped.

As it's seemingly not a w/g or BCS issue, if it's boosting to that figure (albeit not the full target boost).