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Backpressure valve = no louder

1214 Views 9 Replies 5 Participants Last post by  PunchIt
I removed the vacuum hose from the back pressure valve in the exhaust.

The sound did not increase hardly at all. My car was already fairly gurgly.

Some here were complaining that it was sooo loud. Not sure if this mod really makes any difference.
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I'll agree that there is some noise increase. I posted on the larger thread stating that it was barely audible. I too am one of those "overly sensitive" drivers, and felt that the loss that I myself experienced in the bottom end, did not compensate for the slight noise increase.

As we know, all E46s are different. I had a loaner that sounded like a V8 with straight was great. My car..not that loud.

My point is, to each his own. If you want to try something different, why not.

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