Quote:
Originally Posted by MikeB
Well, of course you don't want to use a necked down 3" muffler! That would be the same as using crush bends. Performance mufflers that I'm familiar with are not necked down.
About exhaust not making power, now you're nitpicking. Exhaust will affect how much power the engine makes. So, I'm not sure what you meant there.
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It is about the details when deciding on exhaust, and much of it is on personal preferences. Not typically ultimate power.
A few cheaper mufflers can be necked up from the Chinese factory.
Most mufflers use the same case for differing sizes of exhaust pipe.
If your engine makes 400hp for simple reference in a perfect scenario like a dyno. If you want ultimate power. You watch the details so you loose as little as possible.
So by choosing less efficient headers you loose 10hp, choose chambered mufflers another 10. Go up and over the axle you loose 20hp from 2000-5000 rpm.
Yes all those things are what required to fit in you car lots say. Along with keeping your sanity as you drive.
So your 400hp motor 380 hp.