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Old 03-18-2014, 10:15 AM   #240
regal
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Quote:
Originally Posted by wparsons View Post
The difference on an N/A engine is very noticeable, but with your supercharger adding power in that range already I doubt it's nearly as noticeable for you.




Exactly if this is chewing uo camshafts and bending valves we can pretty much forget GT-86 NA tuning scene.


I guess the next step is to find someone NA with an aggressive VVT who is installing the aftermarket turbo cams for a turbo install.


Mic those used NA cams and we should have our answer,


When I hear it is sounded like a slight manifold leak or exhaust air related which is usually benign unless the manifold cat is breaking down and the egr nature of the exhaust timing is the culprit.


I would expect that more on a stock car than a a catless headered tuned car. Maybe we need to really understand this egr like function and how to avoid it.
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