Originally posted by InitialD
What's the length of the pipe and manifold combo? Is yours a two piece pipe? Try making it slightly longer. You could also add 0.1 mm shim under the combustion chamber head. What is the stock shims that come with the IDM?
Yeah D, we thought the same, i was suggesting a longer header. But apart from knowing what stock shims he has, it would help to also what % nitro fuel he's using.
AFM