01-15-2010, 09:42 AM | #1 |
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Golf tee mod / exhaust flapper disable
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01-15-2010, 10:56 AM | #3 |
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01-16-2010, 06:04 AM | #5 |
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01-16-2010, 06:48 AM | #6 |
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This is just a simple mod that disables the flap at the very end of the exhaust, right at the tip. The needs to be a noticeable amount of backpressure relief to get any significant mpg increase in these heavy vehicles & I didn't notice any change.. Also, I have a hard time to believe those who says "the low end torque decreased" using this mod.. These are force induction engines.. You don't lose any torque/power when you relieve the engine from backpressure (even that logic is false but more on that later).. So in short, no I don't feel any change in power, torque or mpg. I also think that the difference in sound is not that noticeable.
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01-16-2010, 08:17 AM | #7 |
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I've got a Supersprint Street muffler. It has no baffles like the stock one. Was told I'd see about 2 decibel increase in sound...that was correct. Pulled the resonator about 1 more decibel increase, just a guess. I can now hear the exhaust where as before, totally stock, I couldn't hear a thing. I have not had someone drive the car as I stood by, perhaps I should try. As a comparison I'd say it's about the same increase, perhaps a little less, as putting BMW's performance exhaust on a 328i, which I did. It's a subdued but quality sound. Hope this helps. It's all very subjective. I've got a stock muffler, including the plumbing through the bumper and tips. Make me an offer, cut it open and play with it?
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04-10-2014, 02:06 AM | #8 | |
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