2.5 midpipe to 2.25 back pipes

[Red03Mustang]

Would there be a problem with this? I am wanting to go stock mufflers tomorrow with a catted x pipe. It is from Mustang Tuning.

Should this be an easy hookup, or will there be conversion problems? I know the stock piping is 2.25". Isn't the X pipe 2.5"? A shop is doing it for me, and they didn't mention anything for me to look out for in that regard.

Worst case scenario, I guess I'd have to throw on some stainless steel flowmasters. Darn! (Please, responses to my question - don't just tell me to get the flowmasters anyway! )

 

[Darkhorse845]

It is different size exhaust tubing so,it's not going to fit unless
you fabicate it to fit! Now if you get a flowmaster catback with
21/2" tubing then it will fit!

 

[Red03Mustang]

muffler size

The mufflers themselves require a 2.25" pipe to work, right?

I hope they are good at fabricating something! They'll probably really try to throw me some Flows. My shop is big into them. The guy who owns it just loves their sound. I just don't want them because I like the raspy euro sound more than the american rumble - sometimes. My MACs are very rumble-oriented.

He said my MAC sounds pretty good too though. He hadn't heard one before. Most people around here just grab Flows and go. Most people around here don't even mod their car, actually - unless it's a dumb bumble bee civic buzzing around.

Hopefully they'll be able to rig it up. The exhaust guy is really good, so I'm not too worried about it. He did an excellent job with the MAC and the Magnaflows I had before.

BTW, is it hard to do what I'm asking? (this conversion)

 

[turboscrew]

They will fit. I had a mac prochamber bolted to my stock cat back and it fit perfectly and then I had 2 chamber flows welded in with no problem. The stock cat back pipes are flanged on the front side so the end of any midpipe will mate up to them. Just take your time and make sure they are aligned correctly and tighten them down real good and you'll have no problem. If you like the raspy sound a xpipe is the way to go. Mac and flowmaster needs a prochamber for the deep sound. Anyway its a piece of cake to do if you have the right tools.

 

[HoustonGT]

You won't have any problems becuase they connect with flanges, not just one pipe straight to the other. I had a 2.5" Bassani O/R X-Pipe mated to my stock catback with 40 series Flows welded in....I miss my car

 

[Red03Mustang]

What about if I have just the stock mufflers, not the whole catback?

Well, I don't exactly have my stock catback anymore. I am only going to be able to get a hold of the mufflers with dumps as far as I know.

Will this make the installation a lot more difficult for the shop?

This may be a stupid question, but what are dumps, and what purpose do they serve?

 

[Cobra Jay]

It is different size exhaust tubing so,it's not going to fit unless you fabicate it to fit!

I've got a BBK O/R H pipe (2.5") and the stock cat-back. It fits just fine.

 

[tomustang]

Well, I don't exactly have my stock catback anymore. I am only going to be able to get a hold of the mufflers with dumps as far as I know.

Will this make the installation a lot more difficult for the shop?

This may be a stupid question, but what are dumps, and what purpose do they serve?

dumps mean they cut off so you dont have tail pipes. made for more room in the rear for wider tires or suspension parts.

 

[Sellout]

On my car I am pretty sure its 2.5 all the wall to the mufflers. 2.5 in and it was 2.25 out. So it will bolt up fine.

 

[AcE XBOX]

Will dumps hurt my hp?

 

[lazerred02]

It will work, even if it didn't any auto zone or store like that sells adapters that change the size of the pipe, it won't be hard at all to do.

 

[Red03Mustang]

Catted X pipe INSTALLED!! Great pipe!

Hello guys! I finally got my catted X on there. Man, it makes the car sound GREAT! I was thinking about putting the stock mufflers on with the catted X, but I have decided just to leave the MAC catback on. It sounded so good I couldn't take it off! I've been driving around all morning with the windows down just listening to the sound. It's so mean! If I can, I'll get some exhaust clips and post them. Trying to figure out the best way to record the sound....

I was hoping this would fix that bad rattle I have, but of course it didn't. I care though. I'm going to either check into a welding method that rids the car of drone on the inside, or dynomat, either way. The car sounds too good on the outside to change it!

The only thing I could say that would compare to how it sounds now is if it had Magnaflow mufflers. They had a great sound to them when I had them on, and if I could do it over again, I would have left them on and bolted this mustang tuning catted X right up to that. It would have been killer - but this is killer too! It just depends on which sound you like best really: chambered or straight-through! For a chambered hookup, this sounds GREAT!

Thanks for everyone's help on this and for answering all my questions, too. I appreciate it!

I'll get the sound clips up here soon I hope!