RPI Exhaust System Coming Soon

RENN Spec · 11-10-2009, 03:20 PM

More pictures of the exhaust!

kirby135i · 11-10-2009, 03:52 PM

any idea on pricing?

SlicktopTTZ · 11-10-2009, 04:14 PM

40whp or is that flywheel? Pretty amazing for a DP-back. also what size is the single pipe? I'm guessing the two smaller pipes are 2.5".

Eyeman · 11-10-2009, 04:15 PM

Very nice. By far the bet option I've seen for quads.

RENN Spec · 11-10-2009, 04:24 PM

The MSRP will be $2,995 but we'll be starting a group buy soon!

AZ135 · 11-11-2009, 12:24 AM

Quote:

The MSRP will be $2,995 but we'll be starting a group buy soon!

You lost me there... The group buy price better be pretty incredible. Too bad because it looks great, but $3k is just too much for an exhaust.

Jcrewsn · 11-11-2009, 01:25 AM

wow!! but 3k is steeeeeep

kirby135i · 11-11-2009, 08:38 AM

thats insane for an exhaust

arsenyc · 11-11-2009, 09:21 AM

$3k?? even eisenmann doesn't cost that much..... incredibly steep indeed.

My135 · 11-11-2009, 09:43 AM

It is a similar design to Borla and they only sell it for $1800 and they only claim a 20 hp increase. So I wonder how do they claim a whooping 40 hp gain and asked for $3,000. They is the most expensive exhaust I ever saw. It is better be gold plated and do gain 40 hp at the week.

kirby135i · 11-11-2009, 10:22 AM

i cant imagine a catback gaining 40hp...10-15hp seems more in line.

JN2009 · 11-11-2009, 11:17 AM

It's a joke ! it's almost 1500$ more thant the CP-E catback.The difference
beetween those 2 exhaust system is 2feet more in lengt for make the second
exit.This is the price for a exhaust for a Porsche .

solid77 · 11-11-2009, 12:24 PM

2k for a quad would be more reasonable

andrew777 · 11-11-2009, 12:26 PM

For $3,000 it better make 40 hp at the wheels otherwise

mad chemist · 11-11-2009, 02:04 PM

RPIpower,

Sounds fine from inside the car. My guess is it's the acoustics from the other parked cars as you pull away giving that oscillating sound that I can hear.

40 BHP increase from just an exhaust is pretty amazing - good work.

Mad.

RPIpower · 11-11-2009, 02:59 PM

Those of you who are familiar with what I do here will understand the pricing. First tests showed over 40whp gain. This was acheived after a LOT of testing. The mufflers and internals are all made from scratch and we have done enough BMW systems to know what works and what doesnt. To some, it might look like just a muffler or resonator. A lot of work goes into the r&d. I dynoed the car again today and it showed a 38whp gain over my stock baselines. I will continue to dyno it either every day or every other day until I give the green light for production. Those of you who are local are free to come watch the dyno and to test drive the car if its here. Those of you who come will also get an explanation of the costs involved. I dont make mass produced exhausts systems with very little r&d. Our systems are not made to compete with Borla or comparable systems as you cant even compare the quality and amount of r&d that goes into it. Our price points and amount of labor hours used is more comparable to the Hartge systems. As far as I know their system is not a full system though. This is our second BMW and to me personally I wouldnt hesitate to spend $3k on a well made proven exhaust esp if I just spent $50k on a car. Thats just me but I do understand where all of you are coming from. Unfortunately, I dont have sweat shop labor so our costs are pretty high.

As far as the hp gains. Come and drive the car. Its easy to post things on the forums but you guys can come here this week and go out for a spin with me. You can even inspect the car first to see if I have any other mods on it. lol

evifytrihteno · 11-13-2009, 11:24 AM

You said you got 40hp from stock downpipes... what about for those that have catless DP's, ECU tunes, etc. Will the gains look to be about the same?

RPIpower · 11-13-2009, 02:38 PM

Quote:

Originally Posted by evifytrihteno

You said you got 40hp from stock downpipes... what about for those that have catless DP's, ECU tunes, etc. Will the gains look to be about the same?

I have no idea as I dont like to speculate. If I were to do downpipes it would have to compliment the rest of the system. Usually the larger the DP is, the smaller the diameter I make the rest of the exhaust. Im sure the first few people to get the exhaust, we will offer free before/after dynos so we can get a collection of data with different DPs.

sbefar01 · 11-18-2009, 09:44 AM

Maybe it should be RIP instead . . for your bank account that is. JK, looks like a really nice exhaust design with serious gains, where's the polish though?

BroDoze · 11-18-2009, 11:12 AM

For $3K, you can keep it!

ridin135 · 11-18-2009, 11:50 AM

damn wanted this to

RPIpower · 11-18-2009, 01:50 PM

Quote:

Originally Posted by sbefar01

Maybe it should be RIP instead . . for your bank account that is. JK, looks like a really nice exhaust design with serious gains, where's the polish though?

Its a prototype so we dont polish prototypes.

This exhaust is not for everyone though as it is a steep price for us to make as well. Seven sold so far though.

11-10-2009, 03:20 PM	#23
RENN Spec Major 141 Rep 1,314 Posts Drives: 488 Pista, M2CS, Tundra Join Date: Jul 2009 Location: Arcadia, CA iTrader: (3)	More pictures of the exhaust!
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11-10-2009, 03:52 PM	#24
kirby135i Lieutenant 15 Rep 506 Posts Drives: bmw Join Date: Jun 2009 Location: here iTrader: (1)	any idea on pricing?
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11-10-2009, 04:14 PM	#25
SlicktopTTZ Captain 11 Rep 685 Posts Drives: 91 300ZX Twin-Turbo, 2010 135i Join Date: Aug 2009 Location: Corpus Christi, Texas iTrader: (0)	40whp or is that flywheel? Pretty amazing for a DP-back. also what size is the single pipe? I'm guessing the two smaller pipes are 2.5".
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11-10-2009, 04:15 PM	#26
Eyeman Colonel 119 Rep 2,036 Posts Drives: 2008 135 blk, blk, step Join Date: Jan 2009 Location: Atlanta, GA iTrader: (0) Garage List 1994 Porsche 968 Cab [0.00] 2017 AMG GTS [0.00] 1994 Porsche 968 Coupe [0.00] 1977 Mercedes 450SE ... [0.00] 2008 135 [8.00]	Very nice. By far the bet option I've seen for quads. __________________ Injen, RR OCC, MadDad Whisper, donut spare, 19x8.5et43fr 19x9.5et45r Volk LE37's, rear fenders rolled/pulled, PSS4S 225/35fr 255/30r, KW V1's, AR coated catless dps, Cross strutbar, CF grills and license plate holder, iCarbon diffuser, ETS black anodized FMIC, M3 control arms, Quaife, ER chargepipe, ForgeDV's, Topspeed Custom Tune, V3sims, Braille, Andrey_GTA rear hub mod, Ebay Mstyle front bumper and performance style side skirts.
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11-10-2009, 04:24 PM	#27
RENN Spec Major 141 Rep 1,314 Posts Drives: 488 Pista, M2CS, Tundra Join Date: Jul 2009 Location: Arcadia, CA iTrader: (3)	The MSRP will be $2,995 but we'll be starting a group buy soon!
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11-11-2009, 01:25 AM	#29
Jcrewsn First Lieutenant 12 Rep 369 Posts Drives: 2009 BMW 135i Join Date: May 2009 Location: North Tustin, CA iTrader: (0) Garage List 2009 135i Sport [0.00]	wow!! but 3k is steeeeeep
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11-11-2009, 08:38 AM	#30
kirby135i Lieutenant 15 Rep 506 Posts Drives: bmw Join Date: Jun 2009 Location: here iTrader: (1)	thats insane for an exhaust
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11-11-2009, 09:21 AM	#31
arsenyc www.BottleneckGallery.com 72 Rep 652 Posts Drives: F90 M5C / F87 M2C Join Date: May 2009 Location: Jersey City, NJ iTrader: (1)	$3k?? even eisenmann doesn't cost that much..... incredibly steep indeed. __________________ www.BottleneckGallery.com
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11-11-2009, 09:43 AM	#32
My135 Lieutenant Colonel 85 Rep 1,609 Posts Drives: Join Date: Mar 2008 iTrader: (0)	It is a similar design to Borla and they only sell it for $1800 and they only claim a 20 hp increase. So I wonder how do they claim a whooping 40 hp gain and asked for $3,000. They is the most expensive exhaust I ever saw. It is better be gold plated and do gain 40 hp at the week. __________________ 7/08 135 Coupe, Crimson Red, 6 SP, Sport, Taupe Lette/Aluminum. Performance Mods: JB4 on Map 5, BMS DP Fix V3, Injen polished intake, AR Catless DP, Maddad resonated mid-pipes, aFe exhaust polished tips, ST Suspension Coil Over and Hotchkis front sway bar. Others: BMS OCC, BT Scanner, Mud Flap. Next Mods: AA Front Strut Brace.
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11-11-2009, 10:22 AM	#33
kirby135i Lieutenant 15 Rep 506 Posts Drives: bmw Join Date: Jun 2009 Location: here iTrader: (1)	i cant imagine a catback gaining 40hp...10-15hp seems more in line.
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11-11-2009, 11:17 AM	#34
JN2009 Private First Class 4 Rep 195 Posts Drives: 135i Join Date: Jun 2009 Location: Mauricie iTrader: (0)	It's a joke ! it's almost 1500$ more thant the CP-E catback.The difference beetween those 2 exhaust system is 2feet more in lengt for make the second exit.This is the price for a exhaust for a Porsche .
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11-11-2009, 12:24 PM	#35
solid77 Private First Class 16 Rep 148 Posts Drives: 2010 135i Join Date: Oct 2009 Location: seattle, wa iTrader: (3)	2k for a quad would be more reasonable
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11-11-2009, 12:26 PM	#36
andrew777 Second Lieutenant 37 Rep 263 Posts Drives: 135i alpine white Join Date: May 2009 Location: NJ iTrader: (1)	For $3,000 it better make 40 hp at the wheels otherwise
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11-11-2009, 02:04 PM	#37
mad chemist Lieutenant 59 Rep 416 Posts Drives: F82 M4 Join Date: Feb 2008 Location: South East iTrader: (0)	RPIpower, Sounds fine from inside the car. My guess is it's the acoustics from the other parked cars as you pull away giving that oscillating sound that I can hear. 40 BHP increase from just an exhaust is pretty amazing - good work. Mad.
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11-11-2009, 02:59 PM	#38
RPIpower Captain 49 Rep 857 Posts Drives: F97 X3M, G80 M3 Join Date: Aug 2007 Location: PA iTrader: (0)	Those of you who are familiar with what I do here will understand the pricing. First tests showed over 40whp gain. This was acheived after a LOT of testing. The mufflers and internals are all made from scratch and we have done enough BMW systems to know what works and what doesnt. To some, it might look like just a muffler or resonator. A lot of work goes into the r&d. I dynoed the car again today and it showed a 38whp gain over my stock baselines. I will continue to dyno it either every day or every other day until I give the green light for production. Those of you who are local are free to come watch the dyno and to test drive the car if its here. Those of you who come will also get an explanation of the costs involved. I dont make mass produced exhausts systems with very little r&d. Our systems are not made to compete with Borla or comparable systems as you cant even compare the quality and amount of r&d that goes into it. Our price points and amount of labor hours used is more comparable to the Hartge systems. As far as I know their system is not a full system though. This is our second BMW and to me personally I wouldnt hesitate to spend $3k on a well made proven exhaust esp if I just spent $50k on a car. Thats just me but I do understand where all of you are coming from. Unfortunately, I dont have sweat shop labor so our costs are pretty high. As far as the hp gains. Come and drive the car. Its easy to post things on the forums but you guys can come here this week and go out for a spin with me. You can even inspect the car first to see if I have any other mods on it. lol
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11-13-2009, 11:24 AM	#39
evifytrihteno Enlisted Member 0 Rep 30 Posts Drives: 135i Join Date: Jul 2009 Location: Texas iTrader: (0)	You said you got 40hp from stock downpipes... what about for those that have catless DP's, ECU tunes, etc. Will the gains look to be about the same? __________________ Year one of the 1 Black Sapphire 135i. Mods: JB3 1.4 (Map 7), BMS DCI, AR 3" downpipes
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11-18-2009, 09:44 AM	#41
sbefar01 First Lieutenant 16 Rep 331 Posts Drives: 1er Join Date: Nov 2007 Location: NJ iTrader: (0)	Maybe it should be RIP instead . . for your bank account that is. JK, looks like a really nice exhaust design with serious gains, where's the polish though?
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11-18-2009, 11:12 AM	#42
BroDoze Captain 167 Rep 802 Posts Drives: Stuff Join Date: Nov 2009 Location: Colorado iTrader: (0)	For $3K, you can keep it!
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11-18-2009, 11:50 AM	#43
ridin135 Colonel 131 Rep 2,408 Posts Drives: Depends on the day Join Date: Dec 2008 Location: Greenville iTrader: (7)	damn wanted this to
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