Longtubes+stock muffler,restrictive?

I want to know what yall think about that setup. I'm thinking it is restrictive, or at least it feels like it is. Any input?

Pacesetter lt's
pacesetter ORY no cats
2 3/4 stock pipe to stock muffler

The stock muffler is going to restrict it completely. The longtubes can't flow any faster than the muffler lets it.

The stock muffler is less restrictive than a Flowmaster so I dont think you are losing much.

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Originally Posted by jake_03

The stock muffler is less restrictive than a Flowmaster so I dont think you are losing much.

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I cant agree with that because Ive seen the inside of a stock muffler and they LOOK very restrictive compared to a flow

I saw a dyno test on a 5.3 were they replaced the stock muffler with a flowmaster and lost 3rwhp,cut that off and welded up a Magnaflow and picked up 9rwhp over stock,12 hp over flowmaster.

Then i guess its time for another magnaflow, The only reason i run stock is because its quiet.

try spin tech they r way quiet at an idle i have a stock stall so at idle i sound stock and its dumpped but when u launch on it she gets pretty loud

Quote:

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Originally Posted by jake_03

I saw a dyno test on a 5.3 were they replaced the stock muffler with a flowmaster and lost 3rwhp,cut that off and welded up a Magnaflow and picked up 9rwhp over stock,12 hp over flowmaster.

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Yea and I saw the tornado make 15 more hp on the dyno to lol.

just get a big magnaflow, itll be plenty quiet

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Originally Posted by sprayedenali

just get a big magnaflow, itll be plenty quiet

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+1 thats what ima bout to do..