I recently bought an o/r H-Pipe on ebay for 140 (no brand name). Which I expected to get a complete piece of s**t. However it was made fairly well fit very nice and sounds damn good, but the one ? about it I have is that where the balancing tube connects to the main pipe the hole cut into the main pipe is not cut to the full diameter of the balancing tube its only about a 1 1/2 in hole for a 2 inch tube. Does this really matter could it be the cause of the unusual noise coming from around that area under my car. Thanks for your advice.