dandan Posted April 6, 2007 Share Posted April 6, 2007 I'd be very suprised if it wasn't a spike... I think (but can't prove and am still thinking it through so could be wrong) that that spike would have occured as the wastegate didn't open soon enough. The second turbo normally won't receive any exhaust flow until around 4000rpm. So maybe the wastegate vsv doesn't allow boost to pass to the wastegate actuator until over 4000rpm - normally there'd be no need. That could potentially mean a big overboost situation regardless of having a RR in place. Just my thoughts and I'm willing to be proven wrong. Quote Link to comment Share on other sites More sharing options...
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