Quote:
Originally Posted by DM
E-mailed JGM he says it sounds like it is overboosting, so looking to down the Simtek route.
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Sounds a bit extreme to me.
the 100CEL sports cat should not make that much difference to the boost as the cat still provided a levelof restriction that would not be there if it was a full decat.
if it is overboosting then the restrictor pill needs replacing for about £1.00 or even make the hole in the restrictor larger by 0.1mm.
I think the VF28 Turbo on the STi 5 runs a 1mm restrictor in the boost control hose..
You could try the larger restrictor from a TD04 Equipped UK car or 2001> WRX.
I have a few kicking about if needed.
Would also be worth cleaning the pipes to/from the boost controlsolenoid with car cleaner as they may be partially blocked with oil/dirt.