Quote:
Originally Posted by ZEDHEAD
Found this exhaust on ebay and contacted the seller, he stated it will give a 19.5 bhp gain. Can anybody back this up?
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I pulled the trigger on it last week - got it off ebay. I do, however, doubt it will give us +19.5whp. Thinking more 8-12whp but have nothing to back this up, except that I came across a BMW 335i, where the guy stated he had dynoed @ +15.5whp. The z should be a good bit under that.
Cheers.