Quote Originally Posted by Bernard View Post
"it looks like we have found the big contributing factor to the previous problems.....".................

And they were ??

Also where was the rolling road you used ?


Cheers

Phil
As we know the dreaded DET is caused by either toom much ignition timing or heat, or a combination of both, & my Haltech map had very little temp compensation until it was too late.

Looking at the Logging data from my ECU, it is clear that at 0.9 bar the exhaust pressure is above the Boost pressure, which during overlap allows the Exhaust to flow back to the cylinder increasing the cylinder temp & reducing the amount of new mixture in the cylinder... It would only get worse as the boost rose further. This would also explain why the fuel map on the haltech was "strange" over 1bar.

So for now I am sticking to 0.9bar boos as a maximum, to keep things safe... Its still got 475BHP, which is enough for now.....

That rolling road was at Ric Wood Motorsport in Stockport.