H or X pipes?

I believe the functionality is to equalize the pressure at the intersection and therefore, if the two flow paths from the engine to this point are equal, there will be equal backpressure on both banks of cylinders so they behave identically. From a fluid dynamics standpoint, I'd say the X pipe is the best. Does anyone have any data or experience to prove or disprove this?

Most people prefer an H pipe with chambered mufflers like Flowmasters. X pipes and chambered mufflers tend to get a rocks in a tin can sound.

MadDAWG

I have a factory H pipe and Ravin mufflers... nothing tinny about it. But then, I chose the Ravins because they are a little less brassy than the Flows are anyway.

I am seriously thinking of going to an off road X because of what I have read here. Now that I am in Tennessee, I can eliminate all those cats and hopefully realize a few more horses because of it. In my wildest dreams I'd like to go long tube hedders, but that project looks like a knuckle buster with no end of frustration.

Kate

Wouldn't have it any other way.

Now that I am in Tennessee, I can eliminate all those cats and

Yes, you can. I picked up about 7 rwhp going from cats and stocks setup to o/r h-pipe and flows with dumps. My car is a bit wimpy anyways...

In my wildest dreams I'd

Be glad you don't own a 99 and up. They are a low harder.

Don Manning

Yeah, I can see where the sound attenuation properties of the H is probably better than the X.

Of course now that I think of it, isn't it true that in general the better the flow characteristics the worse the sound attenuation properties! One is pretty much inversly related to the other.

Ditto on that recommendation. Also have FRPP shortys, Bassani X-pipe with cats, and Bassani cat-back system. VERY deep and authoritive sound, not tinny in the least. No drone, and quiets down nicely for crusing. Flowmasters almost drove me out of the car on a 4 hour road trip.. ended up running in 4th (with 3.73s!) to control the DRONE. The first thing I did on returning from that nightmare trip was search for a different exhaust system. I am totally satisfied with the Bassani!

LJH

95GT

Funny think about that Don, I was taling to the guys at Bassani in Nashville. They told me that if I replaced all the gobbledygook under my car with their system, I would gain "about 40 horsepower"

Ehm... still having a little trouble swallowing that, but hey, it might be true.

So, when are you going to come down to God's Country?

Kate

| > I am seriously thinking of going to an off road X because of what I have | > read here. | | Wouldn't have it any other way. | | Now that I am in Tennessee, I can eliminate all those cats and | > hopefully realize a few more horses because of it. | | Yes, you can. I picked up about 7 rwhp going from cats and stocks setup to | o/r h-pipe and flows with dumps. My car is a bit wimpy anyways... | | In my wildest dreams I'd | > like to go long tube hedders, but that project looks like a knuckle buster | > with no end of frustration. | | Be glad you don't own a 99 and up. They are a low harder. | | Don Manning | | | >

| > Kate | >

| >

| >

| |

A complete system can gain you a lot of power. Going from headers back that is. It is quite possible that what he told you is true. See, he already knew that you are like every other typical Mustang owner in that you have a new upper/lower intake, heads, and throttle body. Because those are the thing we do first right? We save the headers for last...because they aren't important...and who cares about exhaust right? That is definitely the last thing we worry about. So now that you have all this expensive stuff on your car...and it is choking to death. You start to wonder why you aren't getting the gains in hp that the seller told you about. So you wander over to the exhaust guy and he tells you "You can get 40 horsepower from our complete system".

What he should have said was, "a proper flowing exhaust system [in conjunction] without the right modifications can get you a net gain of 40 horsepower...in the right situations". "It won't always work that way for everyone". "However, I can guarantee that you will have a gain in power and you will probably be smiling for a week or two". "Our system, while expensive, is probably...no, it is the best out there". Ask anyone who has had Bassani on their Mustang and you will find they have been very pleased". "So...would you like some information to take with you"? "Great...while I get you a products catalog, why don't you go over to our demo car and listen to the salesman stab the go pedal a few times".

Anyways...I don't know when we will be [home]bound, but it is in the future. You can bet that we will be stopping in your area...as well as Tungsten's!

Don Manning

Flowmasters.

Generally speaking, and H-pipe produces more power at LOWER RPMs, whereas X-pipes tend to produce more power at HIGHER RPMs.

BTW, got pics of your 89 Vert ?? :>)

-ERIC

89 5.0 LX Vert w/93 Cobra long block, GT-40 heads, some kind of Wildassed Cam (??), HyperTech Chip, 68.5" Short belt for Smog and P/S DELETE, 73mm Police Interceptor Front calipers w/PFC pads, 73mm C&L MAF, BBK 2.5" O/R H-pipe, Flowmaster 40 Series Deltas, King Cobra Clutch Set, BBK Strut Tower Brace, Poly bushings.