RPi GT Exhaust '08 M3

RPIpower · 01-14-2009, 07:45 PM

Quote:

Originally Posted by DLSJ5

Nice! Is this just the muffler section, or with cat mods?

This is a FULL race exhaust from the headers back. The price of the set up is $2637.90 which is a geat bargin at $109/whp. This system is also great for weight saving (The full exhaust is about half the weight of the stocker).

The downside is that the full system is not for the mild. Its really designed to make your nuts rattle. lol. We will be doing some dyno runs on just the mufflers shortly.

RPIpower · 01-14-2009, 07:47 PM

Heres another vid.

RPIpower · 01-14-2009, 07:56 PM

drive vid.

Nucking Futs! · 01-14-2009, 08:07 PM

Sounds good! Sound questions if you don't mind:

1) How big are the tips?

2) Kinda hard to tell from the pics but are those mufflers a circular mufflers (N1-style) or the typical flat oval mufflers on Euro cars?

3) Any pics of the whole exhaust system not on the M3?

4) Cost of ECU tune to avoid CEL? How much more hp/tq (at peak & max on dyno) w/the ECU tune? Or is that last graph w/the ECU tune?

Thx!

RPIpower · 01-14-2009, 08:13 PM

Quote:

Originally Posted by Nucking Futs!

Sounds good! Sound questions if you don't mind:

1) How big are the tips?

quad 3.5" tips

2) Kinda hard to tell from the pics but are those mufflers a circular mufflers (N1-style) or the typical flat oval mufflers on Euro cars?

They are slightly oval with single in, dual out.

3) Any pics of the whole exhaust system not on the M3?

No, these pictures wont be posted at this stage. We posted pics of our GT system for the opel gt two months before it was released. 3 companies now have the same exhaust design.

4) Cost of ECU tune to avoid CEL? How much more hp/tq (at peak & max on dyno) w/the ECU tune?

We literally finished the exhaust today so there is no tune yet. Our goal is to be able to give you the full exhaust + tune for about the same price or less than many other companies muffler section alone. We anticipate the tune will be around $1000 bringing the package price to about $3700ish.

I am also working on putting an intro package for board members like purchasing the exhaust and getting a set of ram air scoops for free.

Thx!

..

JMD0977 · 01-14-2009, 08:34 PM

Ohhh... I like.

Nucking Futs! · 01-14-2009, 10:54 PM

Quote:

Originally Posted by RPIpower

..

Thx for the info! I'm mos def interested & will be watching this thread!

tightie · 01-15-2009, 12:41 PM

DLSJ5 · 01-15-2009, 03:02 PM

Quote:

Originally Posted by RPIpower

This is a FULL race exhaust from the headers back. The price of the set up is $2637.90 which is a geat bargin at $109/whp. This system is also great for weight saving (The full exhaust is about half the weight of the stocker).

The downside is that the full system is not for the mild. Its really designed to make your nuts rattle. lol. We will be doing some dyno runs on just the mufflers shortly.

FStop7 · 01-15-2009, 08:47 PM

I think I love you
But what am I so afraid of

RPIpower · 01-16-2009, 12:54 AM

Quote:

Originally Posted by tightie

Werent you supposed to come by today to test the exhaust?????

tightie · 01-16-2009, 11:50 AM

Quote:

Originally Posted by RPIpower

Werent you supposed to come by today to test the exhaust?????

I got caught up at work. (Had to go to another office)

I'll swing by today or tomorrow.

M3 Montreal · 01-16-2009, 12:46 PM

Tightie ,

You need to update us as to how it sounds in person.Vidoes dont quite do justice to the live sound.

BRDHNTR · 01-16-2009, 03:03 PM

How many db at full throttle? I don't want to get black flagged if I decide to track the car.

RPIpower · 01-16-2009, 08:11 PM

Quote:

Originally Posted by M3 Montreal

Tightie ,

You need to update us as to how it sounds in person.Vidoes dont quite do justice to the live sound.

Tightie is mia. He was supposed to come down yesterday but didnt show up.

Quote:

Originally Posted by BRDHNTR

How many db at full throttle? I don't want to get black flagged if I decide to track the car.

We havent taken db levels yet. I got a chance to do some dynos with just the rear section today. The gains are 8whp and 8wtq throughout the powerband. I also weighted the stock front section at 39lbs where ours was 19.6lbs.

boostedtwin · 01-16-2009, 08:53 PM

Any idea when they will be available for sale?

Whoabitchin · 01-16-2009, 09:07 PM

How loud is the full exhaust it in the cabin? Drone?

mvagusta · 01-20-2009, 10:08 PM

wow.. How is sound in db's for the full system.. Are the primary cat's cut out or are thay high flow cat's? Turner had 45 hp with the cat's out and a tune...Is it almost the same set up?

RPIpower · 01-21-2009, 06:49 PM

Quote:

Originally Posted by mvagusta

wow.. How is sound in db's for the full system.. Are the primary cat's cut out or are thay high flow cat's? Turner had 45 hp with the cat's out and a tune...Is it almost the same set up?

Its no cats. Its hard to compare whp and wtq numbers against other manufacturers because of the way we test the cars. All our dynos are done on a dyno dynamics and we dont post the numbers unless they numbers can be backed up 3-4 times back to back (no cool down and hood closed). Our gains are done on a bone stock M3 (no scoops, no tune, no aftermarket filters, etc.) We are working on a tune that will give us even more power at this time. Exhausts will be ready for shipping in about 30 days.

mvagusta · 01-21-2009, 09:59 PM

keep me posted...pm me.. (WE ARE WORKING ON A TUNE THAT WILL GIVE US EVEN MORE POWER) WOW..thanks

M3 Montreal · 01-22-2009, 09:28 AM

Quote:

Originally Posted by RPIpower

Its no cats. Its hard to compare whp and wtq numbers against other manufacturers because of the way we test the cars. All our dynos are done on a dyno dynamics and we dont post the numbers unless they numbers can be backed up 3-4 times back to back (no cool down and hood closed). Our gains are done on a bone stock M3 (no scoops, no tune, no aftermarket filters, etc.) We are working on a tune that will give us even more power at this time. Exhausts will be ready for shipping in about 30 days.

Out of curiosity is warranty voided if you have no cats at all ? If yes are you looking at doing a setup with a freer flowing cat that doesnt give error messages (like AA's setup).?

RPIpower · 01-22-2009, 03:14 PM

Quote:

Originally Posted by M3 Montreal

Out of curiosity is warranty voided if you have no cats at all ? If yes are you looking at doing a setup with a freer flowing cat that doesnt give error messages (like AA's setup).?

At this time, we do not plan on doing high flow cats. The reason is even with 200cell high flow cats, the performance difference compared to the stock cats are minimal. As for removal of the cats and warranty, you would have the check with the dealership. Removing the cats wont harm your vehicle but you guys all know how BMW can be a very mod unfriendly company at times.

01-14-2009, 07:47 PM	#46
RPIpower Captain 49 Rep 857 Posts Drives: F97 X3M, G80 M3 Join Date: Aug 2007 Location: PA iTrader: (0)	Heres another vid.
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01-14-2009, 07:56 PM	#47
RPIpower Captain 49 Rep 857 Posts Drives: F97 X3M, G80 M3 Join Date: Aug 2007 Location: PA iTrader: (0)	drive vid.
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01-14-2009, 08:07 PM	#48
Nucking Futs! Major 48 Rep 1,436 Posts Drives: E70 X5 M Join Date: Feb 2008 Location: Dallas, TX area iTrader: (15) Garage List 2013 BMW X5 M [0.00]	Sounds good! Sound questions if you don't mind: 1) How big are the tips? 2) Kinda hard to tell from the pics but are those mufflers a circular mufflers (N1-style) or the typical flat oval mufflers on Euro cars? 3) Any pics of the whole exhaust system not on the M3? 4) Cost of ECU tune to avoid CEL? How much more hp/tq (at peak & max on dyno) w/the ECU tune? Or is that last graph w/the ECU tune? Thx! __________________ '13 E70 S63B44A '17 95B GTS
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01-14-2009, 08:34 PM	#50
JMD0977 Captain 69 Rep 994 Posts Drives: 2010 GT3 and .... Join Date: Apr 2008 Location: I-95 iTrader: (6)	Ohhh... I like.
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01-15-2009, 12:41 PM	#52
tightie JOSH SHOKRI. 524 Rep 5,881 Posts Drives: 991 GT3RS, 964, Raptor Join Date: Aug 2005 Location: los angeles, california. iTrader: (7) Garage List 2008 BMW M3 [7.90]	__________________ Current: 16 991 GT3RS , 91 964 C2, 17 Raptor \| Past: 2015 991 GT3, 2015 i3,15 YMB F80 M3, 13 E92 M3 DCT, 08 E92 M3 6MT, 07 E60 M5, 02 E46 M3 Instagram: @josh_speeddistrict #SpeedDistrict @SpeedDistrict
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01-15-2009, 08:47 PM	#54
FStop7 I like cars 329 Rep 5,052 Posts Drives: M6 Join Date: Oct 2008 Location: Newbury Park, CA iTrader: (3)	I think I love you But what am I so afraid of
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01-16-2009, 12:46 PM	#57
M3 Montreal Colonel 68 Rep 2,194 Posts Drives: 2012 M3 SG ,DCT & 2011 S4 Join Date: Oct 2008 Location: Montreal , Canada iTrader: (0)	Tightie , You need to update us as to how it sounds in person.Vidoes dont quite do justice to the live sound.
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01-16-2009, 03:03 PM	#58
BRDHNTR Ground Pilot 41 Rep 548 Posts Drives: e92 BMW M3 Join Date: May 2008 Location: Waverly, PA iTrader: (0) Garage List 2002 M3 [0.00] 2008 e92 M3 [0.00]	How many db at full throttle? I don't want to get black flagged if I decide to track the car. __________________ "The laws of physics cannot be repealed, even with DSC." - BMW Owner's Manual
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01-16-2009, 08:53 PM	#60
boostedtwin Sheriff 109 Rep 1,481 Posts Drives: spyder, Macan GTS, 4xe Rubicon Join Date: Mar 2007 Location: Orlando iTrader: (10) Garage List 07 335i [0.00] 07 335i [0.00]	Any idea when they will be available for sale? __________________ 2023 Porsche Spyder, 2024 Porsche Macan GTS, 4Xe Rubicon & 2021 BMW X5 M Package
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01-16-2009, 09:07 PM	#61
Whoabitchin New Member 0 Rep 5 Posts Drives: On order Join Date: Jan 2009 Location: UT iTrader: (0)	How loud is the full exhaust it in the cabin? Drone?
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01-20-2009, 10:08 PM	#62
mvagusta Lieutenant 16 Rep 473 Posts Drives: 2008 m3 coup Join Date: Jun 2008 Location: michigan iTrader: (1)	wow.. How is sound in db's for the full system.. Are the primary cat's cut out or are thay high flow cat's? Turner had 45 hp with the cat's out and a tune...Is it almost the same set up?
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01-21-2009, 09:59 PM	#64
mvagusta Lieutenant 16 Rep 473 Posts Drives: 2008 m3 coup Join Date: Jun 2008 Location: michigan iTrader: (1)	keep me posted...pm me.. (WE ARE WORKING ON A TUNE THAT WILL GIVE US EVEN MORE POWER) WOW..thanks
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