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      01-16-2010, 06:48 AM   #6
eg3
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Drives: X6 35i
Join Date: Jul 2009
Location: Boston

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Quote:
Originally Posted by barichello View Post
Did you noticed any difference in fuel consumption?
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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