Review of RPi GT Exhaust

gogoevo · 06-25-2009, 08:23 AM

Quote:

Originally Posted by jrAdiRon

For those of you who have the RPI full system,

I am currently testing Eloy's v2 w/ added resonator. It's been six days since I had it installed and CEL hasn't come on. I've been testing v2 from driving nice and easy around residential areas to hard flooring it on the freeways and I must say that this version has much less rasp than the previous version. Also, I haven't noticed any performance loss. Sorry, as of now I don't have a reliable cam for any evidence. I will keep you posted.

Thanks for the news! If I may, did you have a CEL before, and if so, did the car correct itself? How are the resonators installed, any welding needed or are they a replacement to the front pipes? Do the resonators cut down on the ringing, or just rasp?

Thanks

naveenb · 06-25-2009, 01:10 PM

Quote:

Originally Posted by jrAdiRon

Hey J, not much just enjoying the sweetness of this new version, how u handling your new exhaust? Mang your car is fast as hell!

I will try to get some videos done this coming weekend for all of you who seek answers.

cant wait!!!!!!!!!!!!!!!!!!!!!!!!!

jrAdiRon · 06-25-2009, 10:20 PM

Quote:

Originally Posted by gogoevo

Thanks for the news! If I may, did you have a CEL before, and if so, did the car correct itself? How are the resonators installed, any welding needed or are they a replacement to the front pipes? Do the resonators cut down on the ringing, or just rasp?

Thanks

Yes I had a CEL before putting on v2.. I waited for a couple of weeks for the car to correct itself but then it didn't. Eloy had to reset the car to get rid of the CEL.
I really didn't pay much attention to the prototype when I saw it. I got a glimpse of the two resonators and they were perfectly welded on the other end of the pipes.
The resonators definitely reduce the ringing and rasp. The sound is deeper and more solid than the first version.

jimmyeatsworld · 06-25-2009, 10:58 PM

Any dynos with the new version?

RPIpower · 06-26-2009, 12:41 PM

Quote:

Originally Posted by NFDoms2k1

Also, quick question for GT owners - do you have any issues with the fitment of the muffler pipes? I recently put on a Vorsteiner type diffuser and I really noticed just how uneven my tips were. I threw it back on the lift and tinkered around with it for an hour and a half - no matter what I did I could not get it straight, and had to use spacers between the outside hanger brackets and the body just to get it to fit under the diffuser without rubbing.

That was the problem in fact - the rubber bracket section that hooks up the wheels side hangers of the muffler have no room for adjustment - you can't rotate the muffler pipe where it connects to the x-pipe. I am wondering now if my muffler was just not made right, or if its a common issue. I have had a number of people look at it and none can seem to figure out how to adjust it. I just had to get a new computer, I will post pictures of it later.

When you make adjustments, you have to loosen the clamp going to the stock midpipe and the clamp for the pipe that goes into the muffler. I have personally installed the exhaust on several cars with the VST diffuser, even knock off versions and they fit just fine. If you need help, I can send you shaft collars to adjust the tips from right to left. Just email me your info. DONT PM please. eloy@raceprecision.com

Quote:

Originally Posted by Eugene-TAIWAN

Any Pictures on what the V2's look like??

We cant post pictures of prototypes esp one that we are making to eliminate the CEL.

Quote:

Originally Posted by jimmyeatsworld

Any dynos with the new version?

We dynoed it before we put it on Rog's car. Its the same.

Eugene-TAIWAN · 06-26-2009, 09:17 PM

Quote:

Originally Posted by RPIpower

When you make adjustments, you have to loosen the clamp going to the stock midpipe and the clamp for the pipe that goes into the muffler. I have personally installed the exhaust on several cars with the VST diffuser, even knock off versions and they fit just fine. If you need help, I can send you shaft collars to adjust the tips from right to left. Just email me your info. DONT PM please. eloy@raceprecision.com

We cant post pictures of prototypes esp one that we are making to eliminate the CEL.

We dynoed it before we put it on Rog's car. Its the same.

We are you going to release the V2 and the dyno??

NFDoms2k1 · 07-21-2009, 09:46 AM

Bump for news on V2 pipes...

MrHarris · 07-21-2009, 01:34 PM

So no CEL but it's also catless w/ resonators?

King Tut · 07-21-2009, 04:48 PM

I wanted to add that I got the CEL in just 3 days. Is that a record? I also wanna say that I went to a BMW CCA drive this weekend and I had a convertible E30 behind me and he said he had to turn his music way up cause all he could hear was my exhaust. I also got to rev it up in a tunnel and the E46 M3 behind me said it sounded awesome. It is definitely way louder than I expected and on start up I feel my neighbors can all hear it through their houses and are probably pissed, but it is a weekend car, and I love it.

RPIpower · 07-21-2009, 05:48 PM

Quote:

Originally Posted by King Tut

I wanted to add that I got the CEL in just 3 days. Is that a record? I also wanna say that I went to a BMW CCA drive this weekend and I had a convertible E30 behind me and he said he had to turn his music way up cause all he could hear was my exhaust. I also got to rev it up in a tunnel and the E46 M3 behind me said it sounded awesome. It is definitely way louder than I expected and on start up I feel my neighbors can all hear it through their houses and are probably pissed, but it is a weekend car, and I love it.

Some cars got the CEL driving right out of the shop and some got it after weeks of driving. Our test car has had our V2 pipes for about 3-4 weeks now. As much as I would like to say they work, I would feel better letting it run a while longer before assuming that what we tried worked.

Quote:

Originally Posted by MrHarris

So no CEL but it's also catless w/ resonators?

So far so good. No CEL, stock tune with no cats

gemini330zhp · 07-23-2009, 01:03 AM

Quote:

Originally Posted by vegastrashed

Thanks for posting the pics for a E90!!!!!!

RPIpower · 07-23-2009, 02:48 PM

We are taking orders for the E90 version which we will shorten the tip by 1.5".

SchwarzerM3 · 01-21-2011, 11:21 PM

Any updates on the V2?

RPIpower · 01-25-2011, 01:36 PM

Quote:

Originally Posted by SchwarzerM3

Any updates on the V2?

The GTM v3 just released this week. More power and no more metalic rasp.

LinoD · 03-22-2011, 10:59 PM

Hey Eloy, longtime no talk... Hope all is well !!

Just ordered an e92m3, see you in a couple months... I want the GT axel back exhaust !!

Quote:

Originally Posted by RPIpower

The GTM v3 just released this week. More power and no more metalic rasp.

RPIpower · 03-23-2011, 01:11 PM

Quote:

Originally Posted by LinoD

Hey Eloy, longtime no talk... Hope all is well !!

Just ordered an e92m3, see you in a couple months... I want the GT axel back exhaust !!

Yeah man! Hope things are going well with your business. If you are doing axleback, GT is the way to go. If you are doing full system, I recommend the GTM.

LinoD · 03-23-2011, 06:34 PM

cool...

what video clip would say is a good example of what the RPI GT axle back system sounds like... lots of clips out there, just not sure which one is just the axle back exhaust... thanks !!

Quote:

Originally Posted by RPIpower

Yeah man! Hope things are going well with your business. If you are doing axleback, GT is the way to go. If you are doing full system, I recommend the GTM.

birgppa · 03-24-2011, 12:48 PM

sorry but that ringing noise totally ruins it for me, apart from that it sounds gooood

shane335i · 03-24-2011, 01:22 PM

The new GTM doesnt have that ringing sound.

RPIpower · 03-24-2011, 05:18 PM

Quote:

Originally Posted by birgppa

sorry but that ringing noise totally ruins it for me, apart from that it sounds gooood

THE GTM DOES NOT HAVE THE RINGING NOISE

F9T · 01-01-2012, 01:06 PM

Sorry for the thread revival, but does the GT axleback have the ringing or is it only the full GT system that has it?

Raptor251 · 01-01-2012, 01:12 PM

Quote:

Originally Posted by infantrytroop22

Sorry for the thread revival, but does the GT axleback have the ringing or is it only the full GT system that has it?

The GT axle back DOES NOT ring only the full system does. The full GTM does not ring either but drones like a mofo

06-25-2009, 10:58 PM	#356
jimmyeatsworld Second Lieutenant 7 Rep 213 Posts Drives: 2008 E92 M3 6MT Join Date: Nov 2008 Location: Orange County iTrader: (0)	Any dynos with the new version? __________________ RPI GT Race Exhaust ~ RPI Scoops ~ BMC Air Filter ~ 19" BBS LM DBK ~ JL Motoring VRS Front Lip ~ Vorsteiner Diffuser Type I ~ KW Clubsports My RPI GT Race Dyno vs. Stock: http://www.m3post.com/forums/showthread.php?t=239228
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07-21-2009, 09:46 AM	#359
NFDoms2k1 Private First Class 9 Rep 167 Posts Drives: Cute Little Convertible Join Date: Feb 2009 Location: New York iTrader: (3)	Bump for news on V2 pipes... __________________ '09 E93 M3, AW, M-DCT, Fully Loaded Bunch of mods, why such limited signature space M3post ?
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07-21-2009, 01:34 PM	#360
MrHarris yodog 197 Rep 5,025 Posts Drives: '86 Corolla Join Date: Jun 2007 Location: Diamond Bar, Ca iTrader: (5) Garage List 2009 BMW [10.00]	So no CEL but it's also catless w/ resonators? __________________ 2009 E92 M3 \| Alpine White \| Black Extended \| Advan RS \| Turner Test Pipes \| Dinan Axle-Back \| OETuning \| Eibach Springs \| UUC SSK \| VRS Front Lip \| VRS Type I Diffuser \| Matte Black \| RPi Scoops \| MS Filter \| Yokohama AD08 \| F1 Pinnacle Special Thanks: Gintani \| OETuning \| eAs
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07-21-2009, 04:48 PM	#361
King Tut NASA SpecE30 Racer 82 Rep 1,307 Posts Drives: 2006 Honda S2000 TT3 Join Date: Jul 2008 Location: Gulf Breeze, FL iTrader: (2)	I wanted to add that I got the CEL in just 3 days. Is that a record? I also wanna say that I went to a BMW CCA drive this weekend and I had a convertible E30 behind me and he said he had to turn his music way up cause all he could hear was my exhaust. I also got to rev it up in a tunnel and the E46 M3 behind me said it sounded awesome. It is definitely way louder than I expected and on start up I feel my neighbors can all hear it through their houses and are probably pissed, but it is a weekend car, and I love it. __________________ King Tut 2012 BMW M3 Individual: Sold lsb.ridedomain.com 1987 BMW 325is SpecE30: spece30.ridedomain.com 2009 BMW M3 Coupe: Sold e92.ridedomain.com
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07-23-2009, 02:48 PM	#364
RPIpower Captain 49 Rep 857 Posts Drives: F97 X3M, G80 M3 Join Date: Aug 2007 Location: PA iTrader: (0)	We are taking orders for the E90 version which we will shorten the tip by 1.5".
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01-21-2011, 11:21 PM	#365
SchwarzerM3 Second Lieutenant 17 Rep 225 Posts Drives: 2008 M3 E90 Join Date: Sep 2010 Location: Michigan iTrader: (4)	Any updates on the V2?
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03-24-2011, 12:48 PM	#370
birgppa Private First Class 18 Rep 121 Posts Drives: M3 E92 Silverstone II Join Date: Oct 2010 Location: Stockholm, Sweden iTrader: (0)	sorry but that ringing noise totally ruins it for me, apart from that it sounds gooood
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03-24-2011, 01:22 PM	#371
shane335i Second Lieutenant 6 Rep 207 Posts Drives: 2016 BMW M4 Join Date: Sep 2008 Location: Woodside, CA iTrader: (0)	The new GTM doesnt have that ringing sound.
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01-01-2012, 01:06 PM	#373
F9T Captain 76 Rep 724 Posts Drives: F90 M5 Join Date: Sep 2009 Location: SoCal iTrader: (2)	Sorry for the thread revival, but does the GT axleback have the ringing or is it only the full GT system that has it?
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