opinion

What do you guys think about this muffler and do you believe it can add up 7-10 % in hp ?
http://www.cardomain.com/item/BOR40059

I doubt that by itself it will raise HP that much, and will make your car sound like a ricer wannabe. Not a bad looking piece though, but clearance might be an issue.

It wouldn't ADD 7-10%hp - it allows the ability to unlock 7-10% more HP, by opening up the exhaust system. But in and of itself it wouldn't have any real effect, other than asthetic appeal. But with that muffler you could than do a u-bend delete, a new DP and mods of that sort, and THAT would free up some real power in your engine

This post is for Klusek. Sorry to bring this one back, but...
Tried to email you. But it came back. Said you don't have an account.
Send thread and give me your address. Then I can reach you.
Again, sorry

hmmm weird
[email protected]

That's the one I sent it to. Will try again. Just sent it. Let me know if you get it.
http://img.photobucket.com/albums/v425/kustomkid54/1998PontiacGrandPrixGTP002.jpg

Just say no...to that muffler..get yourself a true 2.5" catback setup..including removing the factory ubend delete..you will feel a difference and it will sound alot better than just mufflers...and you actually gain HP instead of "Proclaimed HP increases" that everyone throws around...ttyl MIk