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Yeah, gaining 40 hp from the "tuned" version of the GHL muffler just blows me away. Unfortunately, at the time he posted that I had already purchased the "untuned" version. The "untuned" version supposedly sounds better and is a little louder then the "tuned" version, but who wants to be all bark and no bite? So, now it is time to build up the pennies again, and get the so called "tuned" version. Ah, the never ending quest for more power.
When John tested the Powerflow, I think he got like an 11 hp loss, can't remember for sure. I don't know if he tested it back to back, or not.
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1987 930
It goes faster then I can drive it.
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