Well I can answer this one first hand beause I have a MAC offroad Prochamber. And yes, it is high pitched and raspy.

First let me start off by saying that I have the Flowmaster axlebacks. I dont know if the combination of the chambered design of the Flows and the prochamber's design clash together and make that sound....but it drives me crazy. Maybe it would sound different with another set of mufflers...but let me tell ya, it sounds awful with the Flowmasters. I am not the only one on this board who has a similar setup and has the same complaint. I love the Flowmaster sound and I am gonna go the offroad H-pipe route to see if I can get that deep throaty signature Flowmaster sound.

I'm not sure if the Prochamber is an H-pipe design, because I think the flow paths actually cross each other. You do gain some power from the Prochamber though, I definitely could feel that. But I would rather have a couple less ponies than sound like a rice rocket.

Again, I am not knocking MAC's Prochamber....I bet it sounds killer with a different axleback setup, but with the Flowmasters it sounds like a old farm truck with a set of those glass pack muffers from the 70's.

 

$179 sounds like a great deal if I lived in the States. But living in Canada, I have to worry about the $ exchange, shipping, and customs. I'd be looking at close to $400 and that's not a great of a deal for me. I'll wait till the auto parts dealer I do business with gets them. Until then, I'll make do with what I have. Have a friend who dropped off his Bassani Axle Backs that I'm gonna try out with my custom H pipe. I'll try to post both video clips for the Flowmaster and Bassani mufflers.

 

I would be interested Brent!

 

You could count me in.

 

So this would bolt on to the stock headers and take the place of the stock cats and h pipe? Direct bolt on no welding? For 179 shipped?

Yep, I'll get one.

 

I should have the proto-type in less than two weeks. It is already in the works. The day it arrives I will install it to confirm fit and function then I will give the OK for production. At that point it will take around two weeks to get our first order. Looks like maybe the 3rd week of October I will have them in stock to ship.

Yes this will be a direct bolt in design to the stock headers or any aftermarket shorty header. It will be 2.5" Manderal bent and have all the 02 bungs in the correct location. It will be a direct replacement off road H pipe that will come with a factory warranty.

I am estimating the starting price will be $179 shipped to get them to the market. For now I want to get one in my hands before I take orders. As soon as I install one and give the OK I will take orders and release all the details.

 

Thanks for the update!! I can't wait until they arrive.

I owe you a beer Brent!

 

You think you can get a dyno run while you're at it?

 

Sounds Good to me!! I'll be interested as well.

 

I'm in..any HP gains with this type of setup?

 

Got my interest - Yes pending your test of the prototype

 

any updates on this?

 

Word today is everything is on schedule for us to have it this week. I don't think I will know for sure until Wed if we are on schedule or not.

 

I'm also most interested. For the automotive ignoramus that I am, just how difficult is it to change out these pipes? Would it be something you could swap out for inspections?

 

Yeah you definitely can swap it out for inspections. If you have a lift and an impact gun it takes about an hour to take the factory h-pipe off and put on the new unit. Just unclip the O2 sensors and leave them screwed into the factory h-pipe. Then take off the bolts from the manifold, then loosen the clamps at the mid-pipe, and it will just come right out after you slide it out of the hangers. Then just unscrew the O2 sensors from the factory pipe, and screw them into the new one and then bolt it back up in there the same way it was taken out, and clip the O2 sensors back on. The most difficult part I had was getting the top O2 sensor on the passenger side clipped back into the harness. You definitely need small hands!

I am patiently waiting until Brent gets the new off road H-pipe into production, then I get to do this all over again!

 

I'm still in... just waiting on the OK to pay!!

 

I'm also in.

bump

 

Did you get the prototype in last week?

 

I will have an update Monday or Tuesday at the latest. The prototype is still in development and I wont know until Monday now when I will have it. I have an idea but I dont want to say until I talk with the manufacturer Monday.

THANKS

 

Thanks for the update