I would be very interested in seeing before and after on the same dyno using the same cam. Otherwise, you can't really validate your machine work and any performance change could be attributed any of the other changed variables.
It's not unheard of for Spec E30s to approach 165 WHP (Dynojet) with a properly rebuilt stock head and stock tune.
It's not unheard of for Spec E30s to approach 165 WHP (Dynojet) with a properly rebuilt stock head and stock tune.
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