SLP Loudmouth Catback + SLP X Pipe = Loud?

Cobra18 · Jun 10, 2004

Does anyone use both SLP Loud Mouth Catback Exhaust with SLP's X Pipe Full Assembly? I've heard good things about the loud mouth exhaust. Does anyone know anything about the SLP X Pipe? What kind of HP and Torque increases am I looking at? Combined the price is about $1000 with tax.

Craig Mack · Jun 10, 2004

It flows very well, but its going to be VERY loud with their X-pipe, especially if its an offroad pipe. In fact, it would probably be ear peircing loud. It would get on your nerves for a daily driver, I know for a fact it would be significantly louder than my setup. (offroad x, 2 chamber flows).

In my personal opinion, half of me thinks the loudmouth sounds bad@ss, and half of me thinks it sounds like bubbling, popping metallic blobs of ***** being spewed out a shotgun. It sounds mean, but it blunts the sweet symphony of the Ford 4.6, and makes it sound more like a GM truck. In other words, sounds like something of big displacement, but kind of in an annoying way.

Cobra18 · Jun 10, 2004

The X Pipe is made by SLP. It fits any 4.6 Mustang. I'll post a link to it. Would the SLP Loud Mouth be louder with the SLP X Pipe, or would it be the same sound if the X Pipe was stock? What kind of performance would I get with the 2 SLP products?

http://www.slponline.com/view_product.asp?PARTNUMBER=M31032

Craig Mack · Jun 10, 2004

Cobra18 said:
The X Pipe is made by SLP. It fits any 4.6 Mustang. I'll post a link to it. Would the SLP Loud Mouth be louder with the SLP X Pipe, or would it be the same sound if the X Pipe was stock? What kind of performance would I get with the 2 SLP products?

http://www.slponline.com/view_product.asp?PARTNUMBER=M31032

The loudmouth catback is going to be MUCH louder with the Xpipe. Midpipes add a significant amount of noise. A loudmouth with stock midpipe would sound aggressive and far from too loud, but with a midpipe its going to be very, very loud. And you want a midpipe becuase thats where most of your power gains are coming from.

I'd say with an X-pipe and LM catback, you would see ~20rwhp.

Cobra18 · Jun 10, 2004

What would headers do? Would they alter sound at all?

mad4mods · Jun 11, 2004

Yes, it would be louder with the headers.

Craig Mack · Jun 11, 2004

Cobra18 said:
What would headers do? Would they alter sound at all?

Even louder. Longtubes, shorty X, and LM catback would be disgustingly loud, and would no doubt attract every porker within a 2 mile radius.

fastcoupe68 · Jun 11, 2004

I have SLPs' full exhaust system on my 03. Full length headers, x-pipe with high flow cats, and the loud mouth cat back. It is very loud, insanely loud to be exact. IMO to loud for street driving, I have learned to drive the car quiet, shifting the car at extremly low rpms but soon as you lean into it just a little holy **** it is loud. The car makes great power and incredible torque. I just wish it was much more quiet.

Cobra18 · Jun 11, 2004

What would the performance be like with just SLP loud mouth, slp x pipe and a K&N fuel injection cai.

fastcoupe68 · Jun 11, 2004

Cobra18 said:
What would the performance be like with just SLP loud mouth, slp x pipe and a K&N fuel injection cai.

With the headers x-pipe catted and the loudmouth system the car made 430hp and 420 lb ft with SLP CAI

Morpheusgpr · Jun 12, 2004

Do you guys know if the loudmouth and off road x from SLP would sound good on my 01? Thats my plan right now...

Would the off road x from bassaini make any difference? I would like their long tubs but I am lowered so I was thinking about going with the bassaini mid length headers instead.

Would the slp x pipe work with the bassaini headers?

GotGrunt · Jun 13, 2004

http://www.svtperformance.com/forums/showthread.php?s=&threadid=105500

Morpheusgpr · Jun 13, 2004

Well how do the Borla Stingers compare then? I don't want something that I will end up not likeing.

If I went with the Borla Stingers which off road X-pipe would I want to go with then and would the bassaini mid length headers down the road work with that x-pipe...maybe even go with the SLP x if it makeing good power?

Nazman · Jun 13, 2004

I run the CB and X-Pipe (O/R) and has to be the loudest thing on earth! Just plain mean.

Here is a video (about 15m long) that I made over here in Germany at the races (we close down the airfield and go to town) and you can see all type of Euro Trash, Rice, F-Bodies and Mustangs running. You will see my Cobra (White/Steeda Graphs) and HEAR it......have fun. My races are towards the end.

Racing In Germany

Naz

Uncle Meat · Jun 13, 2004

GotGrunt said:
http://www.svtperformance.com/forums/showthread.php?s=&threadid=105500

I've heard that combo and I have to agree.

U.M.

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