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I have a '92 5.0 LX Convertible and the exhaust sound is way too loud inside the car. I am looking for any recommendations of full systems that include headers and cats. I don't mind a little rumble, as long as it is behind and not underneath me. I don't want to have to change the volume of my radio or conversation with others as I accelerate. Thanks.
I am with spdjnky_42 on this one. On my 5.0 I have offroad xpipe and slp loudmouth dumped and wish it was louder. wait until you hear a LS-1 with no cats and slp loudmouth..thats when exhaust is just starting to get loud
What is the current setup?
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1989 LX 5.0-White/rare tan interior! 303 cam. offroad x-pipe. SLP Loudmouth 1 resonators w/turndowns.Youtube- Michael89254 Awsome to have so many people on this forum so willing to help. A.K.A the guys that know their stuff to help you...
2004 Kia Optima- Only drive if Fox isn't running or in the winter.
once you put some cats on...that will start to bring it down...you could go with a flowmaster 50 or 60 series...that might tone it down enough for ya
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1989 LX 5.0-White/rare tan interior! 303 cam. offroad x-pipe. SLP Loudmouth 1 resonators w/turndowns.Youtube- Michael89254 Awsome to have so many people on this forum so willing to help. A.K.A the guys that know their stuff to help you...
2004 Kia Optima- Only drive if Fox isn't running or in the winter.
Your profile doesn't say if you have an automatic or manual.
Automatic... then I would recommend the bbk shortie headers, bbk offroad h-pipe (no cats), and Flowmaster american thunder catback system.
Manual...bbk long tube headers, bbk X pipe no cats, american thunder flowmaster cat back system. get the locking bolts for the long tubes.
These are complete exhaust systems that will sounds great, and gain some horsepower. It won't be loud until you put your foot into the gas.
I'm running bbk shorties with 2 1/2 bbk x-pipe with cats and magna-flows sounds great going down the road without all the drone inside
I'm running MAC shorties, Flowmaster 40's and have the stock H pipe with all the cats still on it. No sound issues inside except a bit of drone around 2K, but nothing to complain about.
Do you have your tailpipes dumped just after the muffler or are you running complete tailpipes all the way out the back of the car?
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'93 LX 5.0L Hatchback T5 - MM SFC's/MM LCA's/3.55 FRPP gears/UPR Torquebox Reinforcements/Aluminum DS - Ported Explorer Intake/BBK 65mm TB/C&L 73mm MAF/Stack Racing CAI/Explorer fuel injectors/Wahlbro 190lph FP - MAC shorties/Flowmaster 40's & tails - PA Perf. 3G 95A/Pro 5.0/Gabriel shocks & struts/Chrome Ponies - Autometer gauges/Pioneer sound Be yourself, everyone else is taken... -Oscar Wilde
My notch had shorties, off road h, and flowmaster 40 tips. I cut the tips off and it didnt change how the car sounded just made a deeper rumble inside the car, imo though, the 40s were not loud at all until you got on it. my power steering pump was louder than my exhaust. I have mac dumps on now on my hatch and they are louder plus i think they sound 100 times better. The only thing i can really tell ya is run tips out the back with original 40s on a hpipe and some shorties, it wasnt loud at all inside my car. but im with most the other people that posted, i want my car to make my ears ring lol.
heres a old video of my coupe with the 40s and the tips to tryin give you an idea
It still has the stock set-up. I took a look at it, and the pipe coming out of the second cat on the left side is broken. The car is a '92 with 45K miles and is now running after three years in Northern Illinois outdoor storage. Here is a dumb question, does the aftermarket x-pipes connect to the first cat output or to the stock manifold? I am not sure headers will buy me anything, since the stock manifolds appear to be headers. Don't beat me up on this, I am an airplane and Harley guy, not much of a car guy.
BTW, Automatic and I live four miles outside the mandatory smog-check boundary.
Last edited by L915492; 02-02-2011 at 04:16 PM.
Reason: did not finish
the x and h pipes will connect at the back of the stock(looks like a header) manifold. the stocks have smaller diameter tubes and dont flow as well as the aftermarket performance headers.
PS:i reinstalled my tips with no cat xpipe and single chamber flows to get rid of the drone.now theres no drone and when you open it up you still get every ones attention. gotta love the sound of a screamin five liter
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1994 laser red gt (the project) AOD to tremec,centerforce clutch,offroad x-pipe,flowmasters,3:55's,BBK C/A/I,2" lowering springs.
2003 F-250 4x4 crew 7.3L 4"lift locking dif"s 35's and 4:30 gears banks power elbow bullydog GT tuner air raid intake mbrp 4" cool duals.
It still has the stock set-up. I took a look at it, and the pipe coming out of the second cat on the left side is broken. The car is a '92 with 45K miles and is now running after three years in Northern Illinois outdoor storage. Here is a dumb question, does the aftermarket x-pipes connect to the first cat output or to the stock manifold? I am not sure headers will buy me anything, since the stock manifolds appear to be headers. Don't beat me up on this, I am an airplane and Harley guy, not much of a car guy.
BTW, Automatic and I live four miles outside the mandatory smog-check boundary.
Your stock exhaust is Shorty Headers, then H-pipe with cats, then mufflers and pipes.
"Does the aftermarket x-pipes connect to the first cat output or to the stock manifold"
To answer your question the aftermarket X-pipe connects to your stock headers. Your factory H-pipe is all one piece includes the cats. The aftermarket X pipe is also 1 peice just like the H-pipe but it is shaped as an X not an H. For better air flow. Hope that makes sense.
You guys have all been great about this and I have but two stupid questions left. First, are there in fact, four cats on the factory system, or would what looks to be a forward cat simply be a heat shield where the pipe bends? And secondly, what about o2 sensor(s)? Thanks for your input.
1992 5.0 Mustang-Exhaust recommendations 
. I have mac dumps on now on my hatch and they are louder plus i think they sound 100 times better. The only thing i can really tell ya is run tips out the back with original 40s on a hpipe and some shorties, it wasnt loud at all inside my car. but im with most the other people that posted, i want my car to make my ears ring lol.
