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Discussion Starter #1
I have a strange query about the boost on my 95UKTT. If I put my foot down in any gear and at an rpm below about 4000, the boost goes up to about .6-.8bar, then as soon as I hit 2500rpm or so, drops back to .3bar, before then building up with the revs, until it's back to about .7-.8 >4000rpm.

What sort of boost should the car be making up to 4000 - ie is this normal behaviour? Could it be the boost controller - I noticed on an invoice from the company that (re)fitted it saying 'EVC plumbed incorrectly. OE boost control system should be by-passed. Re-plumbed as necessary'. Could it be the turbos have been set to parallel? The EVC also doesn't seem to be working, as even when set to 1.2bar it still behaves as described. The car has no cats (Mongoose), and a HKS BOV (possible culprit?).
 
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