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70rs/ss · 07-21-2008, 06:14 PM

The further you get the exit from the driver the quieter it is in the truck, but it won't really effect the over all sound. 40's are good mufflers, but are agressive in sound and can be loud inside the cab. If you have them already or want them knowing the sound, cool, if not the 50's series are a good blend, raspy sound, but ,mellower inside at cruise.

As far as restriction, the flows don't really have any, unless of course you compare them to a piece of pipe, or a cherry bomb in this case. Two entirely different things, comparing flow to bombs is like comparing apples to mack trucks. Honestly any muffler choice is a personal choice, but to campare as far as perf goes, I doubt you'll have much like proving one is better than others, since restrctions on the exhaust do not mean more or less performance (unless we are talking stock emisions era vs aftermarket bolt on exhaust)on every vehicle. Some restriction (backpressure is needed).

07-21-2008, 06:14 PM	#5
70rs/ss Registered User Join Date: Dec 2004 Location: Northern AZ Posts: 7,270	Re: FLOWMASTER 40 series The further you get the exit from the driver the quieter it is in the truck, but it won't really effect the over all sound. 40's are good mufflers, but are agressive in sound and can be loud inside the cab. If you have them already or want them knowing the sound, cool, if not the 50's series are a good blend, raspy sound, but ,mellower inside at cruise. As far as restriction, the flows don't really have any, unless of course you compare them to a piece of pipe, or a cherry bomb in this case. Two entirely different things, comparing flow to bombs is like comparing apples to mack trucks. Honestly any muffler choice is a personal choice, but to campare as far as perf goes, I doubt you'll have much like proving one is better than others, since restrctions on the exhaust do not mean more or less performance (unless we are talking stock emisions era vs aftermarket bolt on exhaust)on every vehicle. Some restriction (backpressure is needed).