I have an O/R Pypes H-pipe on order from Brenspeed. I ordered it due to the things I read on the forums. As I have Flowmaster Mufflers I have read on all the threads that this set up has more of a deep sound which for me is what I am looking for.

 

Hey Rocky,
At present I am running the off road Mac Prochamber with the GTA's. I have to disagree with Holeshot on the raspy and high pitched sound with this set up. The Prochamber will deepen the sound of any muffler. Removing the cats will just make it louder. Hear the the Offroad Prochamber with the stock muffs and the GTA's. You decide. And absolutely NO DRONE with either setup.
Scott

http://s138.photobucket.com/albums/q...pipesGTAmu.flv- GTA's

http://s138.photobucket.com/albums/q...mufflers-1.flv - Stock mufflers

 

Hey Scott, just wanted to say I was able to check out you're sound clips and the GTA's definitely did not sound higher pitched nor tinny with the Mac prochamber as Holeshot stated but that's just my opinion..Although they do have a deeper sound to them ? I also listened to sound clips with them paired with both the stock H and Pypes off road H and to be honest with you ? the GTA's sounded just as deep with the Pypes off road H as the Pro chamber only louder so at this point, I'm still un-decided on the GTA's after speaking with John from Supreme Performance who did confirm the GTA's are definitely a chambered muffler..So for now I'm going to attempt to find out if the FRPP stingers would still drone, if paired with the Mac prochamber ? and if it gets rid of the drone, I may end up going in that direction otherwise I'll be looking towards either the Corsa's or Zoomers and if you really want to hear deep ? just go to the Zoomer's website and listen to their sound clips you won't believe how both clean and deep these sound I was completely amazed and although you're looking at $599.00 once you listen to them ? you're going to want them that's how good they sound...

 

I gotta say GTA's with Prochamber sounds the best IMHO. Then again, I don't mind loud exhausts either. I'm just saying that sounds fairly clean and smooth.

I like Corsas. I did a Corsa install last week. I gotta say.. no drone, even with an offroad X. It was amazing!

CR
Tillman Speed

 

I don't quite understand Chris, being the Flows are a chambered design didn't you or somebody else previously mention that chambered mufflers are best suited and provide a deeper sound when paired with an off road H ? where on the other hand, a straight flow design muffler is best suited with an off road X ? If what I've mentioned is accurate ? then exactly what kind of tone does the prochamber sound like with Flowmasters, GTA's and what price range would you be willing to sell the prochamber ? as I seem to have a stronger interest in the prochamber over the Pypes off road H

 

Hey Adam, being that you have both the Mac prochamber and FRPP stingers paired together, perhaps you could answer this for me..do the Stingers drone at all with the prochamber ? from my understanding the prochamber isn't quite as loud like the pypes off road H, so being that I'm interested in the prochamber ? I'd seek the input from someone who knows first hand about both...

 

Rocky,

Everyone is finding different results. You have to remember everyone has a different idea of what raspy is, or deep is, as well. I found that a prochamber doesn't sound too bad with Flowmasters, but that's a personal opinion. It's not the same kind of Raspy as my foxbody, but it in no way is a quiet mellow tone.

I think you'll find the best results in a Prochamber as well. I think they're like 419.99 shipped? Let me confirm that, because I think I sold one to someone before and I gave them a much better deal than that already good deal. I will check my slips at the shop tomorrow and reply here.

If I had a new S197 right now, and was going to maintain shorty exhaust, I'd either do off road X with corsas, or Prochamber with GTA's or Pypes. Those both sound mean, and don't have rasp or anything like that. The Corsas have no drone, but I cant garuntee the prochamber will or wont... it's hit or miss, there!

I'll take care of you on either, price-wise!

CR
Tillman Speed

 

Thanks Chris, I'll be looking forward on the pricing..In the meantime perhaps you could confirm this for me as well, In your opinion ? is the Prochamber considered more related in design to that of an off road H pipe or X pipe

 

The actual structure is set up like an H pipe, as the exhaust gasses do not intersect at any time. However, they dump into a chamber. The chamber helps equalize the exhaust flow as well as affecting the sound. The X pipe almost creates a vacuum to pull air from the motor, as a prochamber or H pipe setup is intended to help equalize backpressure to a point. This is how it was explained to me from MAC. It makes sense, in my eyes. All of our testing with UPR X Pipes, Pypes X Pipes, Bassani X pipes, Hedman H, Pacesetter H, Prochambers, etc has confirmed.

 

I dont have any experience, nor have I heard an o/r prochamber with any other mufflers other than the stock ones or the Flows. On the main page there is a clip of Flows vs. GTA's. The GTA's sounded much deeper. I think Flows by nature will produce a higher raspy tone, but yet they are deep at the same time. By higher I dont mean a 91 pimped out honda civic with a coffee can muffler. No, I mean its just a signature sound that only Flowmaster has. Personally, I love the sound of the Flows. Now maybe its just me, and everyone has their own taste in sound...but with the Flows and the o/r prochamber, I didnt like it because it was too raspy for me. It didnt make it sound like a ricer by any means...it was just not my taste. Like Tillman said, he likes it....everyone has different taste.
Mainly, the reason I got rid of the prochamber was because of the infamous "trumpeting" sound. You guys who are just now getting into the o/r pipes will soon know what I am talking about. The prochamber and the flows seemed to magnify the trumpet sound, and I just wasnt gonna have it.
I am not sure how much this helps anyone, as its just my opinion. If you put on a o/r prochamber and some 40 series flows on an 04 on back Mustang it will sound sooooo sweet. I dont know what it is about the 3 valve motor that makes it sound a lot different. I am still looking for the right combination. I have an o/r h-pipe and I am soon going to put on some original 40 series 2 chamber flows, I'll see how that will sound.
Good Luck guys!!

p.s. If anyone is interested in my o/r prochamber, I'll make you a sweet deal.

 

I just sent you a PM about your deal on the prochamber..

 

have u considered an x pipe inplace of the h pipe

 

The Mac Prochamber isn't an H-pipe as in the tradtional sense..MAC’s patented PRO CHAMBER® has obsoleted the current intermediate systems. Split (one each side) manifolds
or exhaust headers on any engine need to be balanced to each other. On a V-8 motor for example, exhaust pulses enter
respective collectors at uneven intervals of 0-90-180-270 degrees of engine rotation. This process hampers the full
benefit of any exhaust header or manifold system by the long intervals between exhaust pulses, making balancing of
exhaust mandatory for optimum power. Balance tubes between exhaust, on opposite sides, help transfer exhaust
pulses from side to side to smooth out exhaust pulses and flow. This results in more power and broader torque band.
MAC’s PRO CHAMBER™ goes even further than traditional X & H-pipes to produce more torque and horsepower
by merging exhaust pulses into one area. Merging of all exhaust gasses creates higher temperatures which creates a
boost in exhaust velocity and allows exhaust gas to use both outlets.

 

According to John from Supreme Performance, The GTA's are considered a chambered axle back and not a straight flow design..However after listening to several different sound clips, I've decided after long and careful thought ? that the Mac Prochamber and GTA's are my best option in both the sound I'm looking for and hopefully the best price as well..

 

I'm looking to get the mac o/r pro chamber to match up to the SLP loudmouth axle back I already have. Couple videos on youtube seem like it sounds perfect!