RPI GT Race exhaust...

Matjo · 06-12-2008, 05:43 AM

I want this exhaust!

Bammered · 06-12-2008, 09:15 AM

I am very interested in this exhaust ! Have been waiting to pull the trigger on an exhaust for 2 months... THat being said, if the race is definetly a muffler bypass it better be less than a grand because my local shop said they could fab me up tips and pipes that delete the muffler cans for less than $400....I WANT LOUD!!!!!!!!!!!!

S2peed · 06-12-2008, 09:43 AM

PRICE????!!!!!!!!

RPIpower · 06-12-2008, 02:56 PM

Quote:

Originally Posted by Bammered

I am very interested in this exhaust ! Have been waiting to pull the trigger on an exhaust for 2 months... THat being said, if the race is definetly a muffler bypass it better be less than a grand because my local shop said they could fab me up tips and pipes that delete the muffler cans for less than $400....I WANT LOUD!!!!!!!!!!!!

We arent competing with local muffler shops. They dont r&d exhausts.

Quote:

Originally Posted by S2peed

PRICE????!!!!!!!!

Price is to be determined after Laidback gets off his lazy ass and comes back for more testing.

Guys, I am NOT going ahead with this project until Laidback comes back for more dyno testing. The entire project is at a stand still and I cant/wont take the next step until I can see dyno proven results on a consistant basis. We arent like some other companies who will prototype something and pull numbers our of our @sses. So, I've been asking Chris to come back and dyno before I do anything else. Maybe you guys can help me pressure him.

Here is the testing/prototype procedure. Understanding this will give you guys an idea when the exhaust might be ready.

stage 1: prototype exhaust for fitment and performance

stage 2: dyno

depending on the outcome of stage 2, we move on to stage 3

stage 3: prototype for sound and pricing

stage 4: dyno

stage 5: 500-1000 miles on the car

stage 6: dyno

stage 7: jig is made from prototype

stage 8: first production piece is made from original jig, then test fitted to ensure fitment accuracy.

stage 9: production 4-6 weeks

We are at stage 2 right now. Its a waste of time and money for us to make something that doesnt work so I need to make sure we dyno the car again before taking the next step. In the end, Im NEVER going to put the RPi name on a product that doesnt work.

Rosspbig · 06-12-2008, 04:11 PM

Laidback get your ass in there!

laidback · 06-12-2008, 04:38 PM

Damn peer pressure!!!

(Just when i was enjoying the POWER) Ok i'll drop of the Z4MC Monday early a.m and we can do all the testing...but guys you have to support this group buy and especially bring all your ASS at Mfest this coming August 29-31, 2008 as I want alot of Z presence and with some Hp/Tq to boot

Eloy,

My lawyer friend just got an Z4MC (someone pressured him i think

) and he said he's in for the RPI scoops, software and exhaust

Quote:

Originally Posted by Rosspbig

Laidback get your ass in there!

SunnyD · 06-13-2008, 12:44 AM

i cant WAIT to hear the race exhaust..

laidback · 06-14-2008, 10:28 AM

Short clip and very close on what the RPI GT RACE Exhaust...
1st gear to 2nd gear...window half way up

Dammmittt · 06-14-2008, 11:06 AM

Sounds good.

laidback · 06-14-2008, 01:24 PM

Like this when it's all said and done.

Quote:

Originally Posted by Dammmittt

Sounds good.

Burt Reynolds · 06-14-2008, 07:23 PM

Nice Sound.

Rosspbig · 06-14-2008, 08:34 PM

Sounds great!

laidback · 06-15-2008, 01:20 AM

Ok...i talked to Eloy today and I will be at RPI on Monday 9 a.m

to dyno the car so we can move forward and get our EXHAUST!!!

laidback · 06-15-2008, 01:25 AM

Quote:

Originally Posted by RPIpower

We arent competing with local muffler shops. They dont r&d exhausts.

Very interested...

1. Laidback
2. ///Metak
3. SunnyD
4. Rosspbig
5. Matjo
6. bammered
7.

M2audioman · 06-15-2008, 05:00 AM

I added my name to the list. I'm definitely in on this one now that I am out of the Stromung GB...

1. Laidback
2. ///Metak
3. SunnyD
4. Rosspbig
5. Matjo
6. bammered
7. 335audioman

SunnyD · 06-16-2008, 01:36 PM

Quote:

Originally Posted by laidback

Ok...i talked to Eloy today and I will be at RPI on Monday 9 a.m

to dyno the car so we can move forward and get our EXHAUST!!!

How'd it go this morning Chris? What kinda numbers are we lookin at on the dyno? I can't wait to hear the production version of the exhaust

M2audioman · 06-16-2008, 03:59 PM

Patiently, and very anxiously, waiting for a dyno report

RPIpower · 06-16-2008, 06:26 PM

We had a chance to dyno the car today and there was a loss in performance by deleting the mufflers. Laidback was like, "youre going to post it?"

Well, of course I am! We are open with our testing results. So, I can tell you that running no muffler will give you no benefit and in most cases you will have a decrease in performance. We will be changing the design a little bit and then dynoing again. I appreciate you guys being patient with us but thats the way it goes. I have to personally see the benefits before we release anything. Stay tuned for version 2.

It might not be the way of other manufacturers but its the way of RPi.

MMMazing07 · 06-16-2008, 07:17 PM

can you post the dyno sheet? i just want to see how much power im really losing.

M2audioman · 06-16-2008, 07:23 PM

Thanks for the update and the honesty! Glad to see a company doing the proper research on this product. Makes me feel better about throwing my hard earned cash your way!

MMMazing07 - Does it really matter how much power was lost? Power loss is a power loss. Even if it's 1 HP, why have something done to the car that decreases power? Wouldn't make sense.

Burt Reynolds · 06-16-2008, 07:29 PM

Props for honesty! RPI FTW.

MMMazing07 · 06-16-2008, 07:30 PM

i have a custom muffler bypass

06-12-2008, 05:43 AM	#45
Matjo Private First Class 17 Rep 146 Posts Drives: Z4 M Coupé Join Date: Mar 2008 Location: Sweden iTrader: (0)	I want this exhaust!
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06-12-2008, 09:15 AM	#46
Bammered Track Addict 10 Rep 207 Posts Drives: E86 Z4 ///M COUPE Join Date: Jun 2007 Location: NYC/NJ iTrader: (0) Garage List 2006 E86 ///M COUPE [0.00]	I am very interested in this exhaust ! Have been waiting to pull the trigger on an exhaust for 2 months... THat being said, if the race is definetly a muffler bypass it better be less than a grand because my local shop said they could fab me up tips and pipes that delete the muffler cans for less than $400....I WANT LOUD!!!!!!!!!!!!
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06-12-2008, 09:43 AM	#47
S2peed Second Lieutenant 23 Rep 240 Posts Drives: 07 Black Z4MC Join Date: Mar 2008 Location: NYC (shaolin) iTrader: (1)	PRICE????!!!!!!!!
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06-12-2008, 04:11 PM	#49
Rosspbig Private First Class 12 Rep 141 Posts Drives: 2013 M5 Join Date: Dec 2007 Location: Georgia iTrader: (0)	Laidback get your ass in there!
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06-13-2008, 12:44 AM	#51
SunnyD Major 452 Rep 1,288 Posts Drives: M4 GTS Join Date: Dec 2006 Location: Long Beach, CA iTrader: (0)	i cant WAIT to hear the race exhaust.. __________________ '16 ///M4 GTS '11.75 ///E90 M3 ZCP \| DCT '06 ///M5 \| SMG - Gone '98 ///M3 \| 5MT - Gone '07 ///M Coupe \| 6MT - Gone
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06-14-2008, 10:28 AM	#52
laidback Lieutenant Colonel 134 Rep 1,709 Posts Drives: M's Join Date: Jul 2007 Location: SoCal iTrader: (0)	Short clip and very close on what the RPI GT RACE Exhaust... 1st gear to 2nd gear...window half way up __________________ Live as if you will die tomorrow, but learn as if you will live forever." M.G
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06-14-2008, 11:06 AM	#53
Dammmittt My favorite sign. 167 Rep 4,333 Posts Drives: 2007 M Coupe Join Date: Dec 2006 Location: Der Autobahnen iTrader: (0)	Sounds good. __________________ 07 ///M Coupe (Premium Package) Black Saphire Ext. Imola Red Int. Best Website EVER!
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06-14-2008, 07:23 PM	#55
Burt Reynolds Captain 53 Rep 689 Posts Drives: 2007 M Coupe Join Date: Mar 2008 Location: Windy City iTrader: (0)	Nice Sound. __________________ 2007 M Coupe w/NAV/Premium/Extended Leather, Clearbra, DICE, 4.10 BMW Motorsport Polished LSD, Active Autowerke Gen IV Headers, Supersprint Race Exhaust and X-Pipe, ESS Tuned DME, KWV3 Coilovers, Volk RE30, OEM Strut Tower Brace, Short Antenna, JL AMP, JL 10W7, Valentine V1.
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06-14-2008, 08:34 PM	#56
Rosspbig Private First Class 12 Rep 141 Posts Drives: 2013 M5 Join Date: Dec 2007 Location: Georgia iTrader: (0)	Sounds great!
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06-15-2008, 01:20 AM	#57
laidback Lieutenant Colonel 134 Rep 1,709 Posts Drives: M's Join Date: Jul 2007 Location: SoCal iTrader: (0)	Ok...i talked to Eloy today and I will be at RPI on Monday 9 a.m to dyno the car so we can move forward and get our EXHAUST!!! __________________ Live as if you will die tomorrow, but learn as if you will live forever." M.G
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06-15-2008, 05:00 AM	#59
M2audioman Captain 197 Rep 837 Posts Drives: 2018 M2 Join Date: Apr 2007 Location: Bay Area, CA iTrader: (0)	I added my name to the list. I'm definitely in on this one now that I am out of the Stromung GB... 1. Laidback 2. ///Metak 3. SunnyD 4. Rosspbig 5. Matjo 6. bammered 7. 335audioman
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06-16-2008, 03:59 PM	#61
M2audioman Captain 197 Rep 837 Posts Drives: 2018 M2 Join Date: Apr 2007 Location: Bay Area, CA iTrader: (0)	Patiently, and very anxiously, waiting for a dyno report
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06-16-2008, 06:26 PM	#62
RPIpower Captain 49 Rep 857 Posts Drives: F97 X3M, G80 M3 Join Date: Aug 2007 Location: PA iTrader: (0)	We had a chance to dyno the car today and there was a loss in performance by deleting the mufflers. Laidback was like, "youre going to post it?" Well, of course I am! We are open with our testing results. So, I can tell you that running no muffler will give you no benefit and in most cases you will have a decrease in performance. We will be changing the design a little bit and then dynoing again. I appreciate you guys being patient with us but thats the way it goes. I have to personally see the benefits before we release anything. Stay tuned for version 2. It might not be the way of other manufacturers but its the way of RPi.
	Appreciate 0 Quote

06-16-2008, 07:17 PM	#63
MMMazing07 More than you can afford pal....ferrari 180 Rep 1,471 Posts Drives: Z4M Join Date: Aug 2007 Location: MD iTrader: (0)	can you post the dyno sheet? i just want to see how much power im really losing.
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06-16-2008, 07:23 PM	#64
M2audioman Captain 197 Rep 837 Posts Drives: 2018 M2 Join Date: Apr 2007 Location: Bay Area, CA iTrader: (0)	Thanks for the update and the honesty! Glad to see a company doing the proper research on this product. Makes me feel better about throwing my hard earned cash your way! MMMazing07 - Does it really matter how much power was lost? Power loss is a power loss. Even if it's 1 HP, why have something done to the car that decreases power? Wouldn't make sense.
	Appreciate 0 Quote

06-16-2008, 07:29 PM	#65
Burt Reynolds Captain 53 Rep 689 Posts Drives: 2007 M Coupe Join Date: Mar 2008 Location: Windy City iTrader: (0)	Props for honesty! RPI FTW. __________________ 2007 M Coupe w/NAV/Premium/Extended Leather, Clearbra, DICE, 4.10 BMW Motorsport Polished LSD, Active Autowerke Gen IV Headers, Supersprint Race Exhaust and X-Pipe, ESS Tuned DME, KWV3 Coilovers, Volk RE30, OEM Strut Tower Brace, Short Antenna, JL AMP, JL 10W7, Valentine V1.
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06-16-2008, 07:30 PM	#66
MMMazing07 More than you can afford pal....ferrari 180 Rep 1,471 Posts Drives: Z4M Join Date: Aug 2007 Location: MD iTrader: (0)	i have a custom muffler bypass
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