I ran over a piece of asphalt about the size of a brick the other night. The Y-Pipe from my Mac headers hangs just below the K-Member so that is what got creamed. It has a pretty big dent in it although it is kind of hard to see in the pics. I will post more pics as soon as i can get them. I am going to get it fixed, but i didnt know if it would be a better idea to take the Y-Pipe to an exaust shop or to order a new Y-Pipe from Mac. My exaust is pretty restrictive anyway...so I can't feel a significant power loss, although I'm sure there is one. What kind of power do you think that I am losing.

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That's nothin' compared to the dent I got in my Mac Y pipe. I ran over something also but I don't know what it was. Mine was dented where the two go into one. I drove it for years like that and didn't notice any difference at the track or on the street from before to after the dent. I brought it to a good muffler shop and they said it couldn't be fixed. So I brought it to a friend that works at a Nissan parts dealership and he brought it back to the body shop who then sorta fixed it. At least it's better than before. Then I sent it with the headers to Jet Hot who originally coated them for a new coating. Everything looks brand new now.

 

I posted some updated pics above.

 

Ouch, that sucks. In my honest opinion, from what I have learned with exhaust ground clearence issues, I would not bother with it. If you buy a new one, it will most likely hang in the same spot, and if you hit something again, then you might dent that one. Thats just what I have learned. Also, it might be hurting your top end a tiny bit, but will give more backpressure which if you have the right amount of backpressure, it is better for building botom end. Just my 2 cents.

 

probably minimal if that.

 

It doesn't look THAT bad... certainly not worth the hassle of replacing it.

On the note of exhuast dents though... my over the axel pipe has been smashed it! I think my panhard arm crunched it.. I mean, you should see it lol

 

Thats really not all that bad. I hit my mac y pipe on the ground and it had about a four inch flat spot in the bottom. Couldnt tell a bit of difference.

 

Are you kidding? LOL

 

LOL here we go with the backpressure thing again...
Are you losing horsepower with a dent in your y-pipe? Probably. Is it a difference that you could even measure on a dyno? I doubt it. Pacesetter ORYs have a flat spot on one side for clearance. I wouldn't waste my time with that.