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Excalibur502mag

08-09-2004 10:19 PM

Backpressure on a 502 mag efi

My 1999 502 mag came from the factory with straight 4" exhaust the transom only has flappers. It is very loud, and I like it this way, but an auto mechanic friend thought I might need some exhaust tips for backpressure. He says that most engines need a little to perform correctly. Is there even any baffles in the factory system? All I can see is the 4" rubber hose from the manifolds back.

OkieTunnel

08-09-2004 10:23 PM

Re: Backpressure on a 502 mag efi

I had a 454 mag which ran straight through and it ran fine. OK now I see "Auto mechanic" friend of yours! You don't need any back pressure to make a 454 or 502 mag run right. They are designed for straight exhaust.

Excalibur502mag

08-09-2004 10:48 PM

Re: Backpressure on a 502 mag efi

1 Attachment(s)

Thanks,

I am considering mounting a tip like this to take the sound down a touch for my nieghbors. Will it affect my performance or top end?
Suggestion are greatly appreciated

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