I just wanted someones out look on this. I have a RMR intake and am considering buying Pruven's muffler exhaust system. Pruven says it gives around 12hp and 10lbs of torque. Is this set up a good one, or do I need a down pipe also, and if I need a downpipe which one? I just don't want to spend 800 on the full exhaust from JIC.

 

The Pruven axle back is a good setup. It will give you noticeable power gains...especially upper rpm range.

 

Some one said that they bought it for 250 do you know where to get it for that price, because all I have seen is 330

 

the guy who bought it for that price was Al. his car is built by pruven and he gets really good prices from them.

 

Pruvenperformance.com

265.00

 

Thanks Guys, How about the set up or the downpipe? Also just an FYI I got my clutch replaced last week and it feels a lot better than the first one, its another stock one after 6000 miles. Just don't rev up the car and drop the clutch, AWD is not ment for that. I learned the hard way $1400 for new clutch from the dealer, I got it for their cost though $700

 

I just read on pruven's website that after installing the pruven axel back muffler you gain hp and torque,but it makes you lose psi and you need a boost controller to up it at normal 19psi is that true with every exhaust????

 

It seems like you gain Boost with a axle back or test pipe. I think the site needs to be updated.

Eric

 

You're right Eric ... a free'd up high flowing exhaust system increases boost by 1-2 psi ... I confirmed this with my HKS EVC V bc. After installing my turbo back, I had to back off a bit on my boost control settings because boost output was much higher after the install.

The site should claim that one should buy a boost controller to 'turn down' the boost a notch ot two if he/she prefers to run 19.5 psi, because a free flowing exhaust increases boost output by 1-2 psi. Their claim sounds back-asswords to me.

 

For someone runing a factory boost control witch is closed loop (Self adjusting it will put the boost to what the ECU wants to see MAP)

So a MBC or EBC is kinda not the topic here.

Eric

 

I thought that boost loss (psi) was attributable to the "test pipe" and the system having no back pressure where a cat converter would provide the only remaining back pressure in the system

Is anybody running a DP with Axel back - any Butt dynos?

 

Boost goes up. I have there test pipe.

Eric

 

Actually - Pruven is right and you are wrong

There is a flapper in the rear muffler which closes at low rpms and helps raise the boost - actually the evo boost control is NOT closed loop - when you remove the muffler and the test pipe - the boost goes down - when you install a boost controller and get the boost back to stock - or higher - then you see some good power gains

 

Is the power loss attributable to removal of the cat converter for the (test pipe)? What if the cat converter is left stock and just an axel back is added or a cat back exhaust - any power loss then? What's causing the loss? Thanks in advance...

 

Al took off my Muffler last night and low and behold more boost with even more spiking. I looked for the Flapp in the stock muffler and I could not find it. getting a peak of 20 psi with Pruven Cat delete and no rear muffler on stock boost. NO MBC and NO Xede and NO S-AFC. Can you post a picture post a pic of the flap.



FYI
Eric