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What HP you think your car runs? Let us know when the time comes how the set up works! (Stupid snow!) I also didn't use the Turbo mufflers that come with the kit. I used the Ultra Flo's.

Yes, I have to say. I installed the 3" exhaust with an H-Pipe and I didn't lose any HP at all. Matter of fact I may have gained. Since I never tried 2 1/2" I guess I have nothing to compare it too, however anyone that says that you lose HP just isn't true. I have the smaller 1 3/4" TTI header...

Also stated...

Yes, I've been doing a lot of reading. It seems my engine being a 400ci is pretty much on the fence as far as 3" exhaust. With having a mild cam and aluminum heads it could go either way. One article I read said it was all in the headers. After that, the exhaust just wants to get out...

So it basically comes down to the whole "mine is bigger" concept. I'll be proud to admit I'm only 2 1/2 inches. Is how you use it, not the size.

I'll just be going TTI all the way back. I need to call them and make the order. Thats why I'm trying to figure this out. They want more for the Ultra Flows because they are a different size, and extra tubing to make them fit & Shipping sucks.

Well, right now I have old school glass packs under the car, so loudness isn't really an issue. I kind of like the Dynomax Ultra flows, they have a low deep tone that I like. I guess I'll stick with the 2 1/2 pipes, but? H-Pipe or X pipe? Idk? I was going to go with the H pipe, but now, I'm not...

Don't mean for this to be an argument thread... however I have heard 2 different opinions on this. I have a 400 engine with aluminum RPM heads. I bought 1 3/4" TTI headers... I've read on forums to go with 2 1/2" exhaust and H-Pipe for a lower tone. 3" is overkill and you lose low end...

Can you reuse a exhaust gasket, about 6 months old?