Looking to put dual exhaust on the car finally. I have a set of Tri-y headers and would like to run flow master mufflers. What i am looking for is that low rumbling hot rod sound (not super quite). Which pipe would be best for this, x pipe, or h pipe?

 

X pipe or stiaght on back from the headers.

 

40 series flowmaster with the x pipe

 

Dump it under the car. Sounds will be phenominal

 

i literally had my exhaust redone a week ago.

i have hedman long tube elite headers with 2.5" pipes going straight out into flowmaster 40s and turn downs. best sound in the world, and on a stock motor!! i wouldn't go with any crossing pipe, there have been no tests or data that prove any benifit to these crossing pipes. not to mention crossing pipes (X or H) make it quieter and who wants that?

i totally agree with superdavid....forget the extra pipe. have them turn down right after it comes off the muffler near the rear axle, the noise of the exhaust under the car sounds much better...and plus that extra pipe to bring out the back just muffles the sound even more.

in my opinion it looks better without tail pipes, looks cleaner in the rear. and with the exhaust reverberation off the asphault it will give it a very nice sound.

take it from someone who just got a new exhaust, a header/40 series combination is the most beautiful sound in the world on a 289

 

Jonward786 would be great if you had a mint sound clip of your vehicles exhaust.

 

IMO, dumps are stupid:-| Exhaust is supposed to exit behind the car, not under it, and certainly not from inside the cab. Turn downs behind the axle dump all the exhaust gases/noise straight at the ground, where they get reflected right back up at the bottom of the car. This results in a) exhaust gases filtering into the cab when you're stopped or moving slowly, and b) an extremely excessive amount of resonation inside the cab (can you say hearing loss?). You can get a great sound through tailpipes; there's no need to use pre-axle dumps.

Jonward, there have been tests to confirm that balancing exhaust pipe pressures between banks improve power and efficiency. This is why every single car manufacturer uses a balance pipe on a dual exhaust car. Every single one. Do you really think a vehicle manufacturer is going to waste money on engineering and parts for something that has no value? The point of a balance pipe is to even the exhaust pressures between cylinder banks to allow the engine to run smoother. It works, improving power and smoothing the engine out across the rpm range. It also smooths out the exhaust note, not really making it quieter, but making it more even and less raspy. The end result is an exhaust that sounds like a V8 rather than two I4's.

I prefer H-pipes on classics. X-pipes will produce slightly more power at high rpm's, but any advantage in street driving will be negligible, and I don't like the sound of X-pipes on classics. They tend to make the exhaust note a little more tinny sounding, in my experience, and less like a classic muscle car. I do like X-pipes, however, on the newer OHC mod motors.

As far as mufflers, do some research on youtube. Mufflers are a personal preference thing. If you want ridiculously loud, go with Flowmaster 40's. I hate them because they're obnoxious and deafening inside the car (they tend to drone) and everybody has them, but you may like them. I prefer the less raspy rumble of Magnaflows. That said, I have a set of Flowmaster Hushpower II's on my 67 and I absolutely love them. Nice mellow 50's tone at idle, moderate growl while cruising, and they absolutely scream under WOT.

 

I say get glass packs 2 inch pipe straight back.. Then exit with stainless slash cuts =] beast sound

 

no there have been no published tests that show any SIGNIFICANT benefit to crossing pipes...find one and ill change my mind. YES i am aware of the fact that they add an undetectable amount of torque at lower rpms but no one cares. when it costs me 15 $ to have them add an H pipe to my system how much benefit do you REALLY think that gives.

again show me test results and ill change my mind, but as of now they add no significant benefit.

and as for the tail pipes, if you want em get em...its personal preference

https://mustangforums.com/forum/show...ght=jonward786

 

How about the fact that adding an H pipe significantly smoothed out my engine across the rpm band, and added a slight but noticable amount of torque to my bottom end (which is sorely lacking, due to my cam)? I certainly do care about that.

I have seen a couple tests showing 5-15hp gain from an H-pipe, I just can't find them anymore (that forum no longer exists in the same form). I believe Flowmaster did one of them. As soon as I find one again, I'll be sure to save it and post it.

In any case, $15 for a couple hp and a smoother running engine is probably one of the most cost effective upgrades you can do to your car. If you're not willing to spend $15 on your car, well...