BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)
 





 

Post Reply
 
Thread Tools Search this Thread
      12-07-2009, 04:46 PM   #67
RPIpower
Captain
RPIpower's Avatar
49
Rep
857
Posts

Drives: F97 X3M, G80 M3
Join Date: Aug 2007
Location: PA

iTrader: (0)

Quote:
Originally Posted by ridin135 View Post
Has anyone went to at least take a drive in this. I would put this on my car in a heart beat to dyno test it if I was anywhere near them. Would be interesting to see what these do with catless downpipes
Ive been asking but no one has been able to. I talked to Mike @ southbay bmw and hes going to drop off his car so I can dyno it this week. His car is stock except for some tune he got from a company in NY. Either way, it would be a good comparison.
Appreciate 0
      12-07-2009, 10:17 PM   #68
BimmerBoi2100
Private First Class
2
Rep
145
Posts

Drives: 2009 Black 135i
Join Date: Jul 2007
Location: Da Desert

iTrader: (0)

I definately like the look of the exhaust....if it does anything close to what you say it does..I'm buyin
Appreciate 0
      12-08-2009, 12:02 AM   #69
solid77
Private First Class
United_States
16
Rep
148
Posts

Drives: 2010 135i
Join Date: Oct 2009
Location: seattle, wa

iTrader: (3)

ya it looks sweet... since the part for the diffuser is only $50 will you offer precut pieces that match the oem exhaust side 100%? i'd rather pay a little extra for a precut piece that will be 100% than risk a local shop screwing it up and not look clean... plus the added hassle of having to reorder another one and get it cut again...
Appreciate 0
      12-08-2009, 12:05 PM   #70
RPIpower
Captain
RPIpower's Avatar
49
Rep
857
Posts

Drives: F97 X3M, G80 M3
Join Date: Aug 2007
Location: PA

iTrader: (0)

Quote:
Originally Posted by solid77 View Post
ya it looks sweet... since the part for the diffuser is only $50 will you offer precut pieces that match the oem exhaust side 100%? i'd rather pay a little extra for a precut piece that will be 100% than risk a local shop screwing it up and not look clean... plus the added hassle of having to reorder another one and get it cut again...
Quote:
Originally Posted by BimmerBoi2100 View Post
I definately like the look of the exhaust....if it does anything close to what you say it does..I'm buyin
Thanks for your intellegent posts. That was the whole idea about making the exhaust like this. We didnt want you to have to pay $3500 for an AXLE back (some companies do that), and then spent a few hundred more to buy their rear diffuser which is needed for their exhaust to fit. Thats just ridiculous. Behind the bumper, there is a canister and some other plastic parts. Because of this, we had to make actual manifold or exhaust distribution blocks behind the tips so that the heat coming from the exhaust doesnt cause any problems with the components under your trunk.

I have received some PMs from people offering their cars for testing so this is great news. I will offer a HEAVY discount and free labor for the test subject when our exhaust is released.
Appreciate 0
      12-08-2009, 12:15 PM   #71
Simon_135i
Collecting dust!
Simon_135i's Avatar
55
Rep
2,009
Posts

Drives: 135i
Join Date: Apr 2008
Location: San Diego

iTrader: (8)

Garage List
2008 E82/135i  [0.00]
I know this is only a pre-production model but if anything I suggest you look at the tips and how far they are sticking out. If it can be reduce, due narrow depth of the tip assembly being seen when looking at it from the side.

I actually wouldn't of minded driving to you guys since my car is practically stock with a JB+ which can be easily removed. I too was looking for a QUAD and made the purchase already with another vendor. Unfortunately, I am still waiting for the product to arrive. If that falls through, I may give you guys a PM.
Appreciate 0
      12-08-2009, 12:30 PM   #72
RPIpower
Captain
RPIpower's Avatar
49
Rep
857
Posts

Drives: F97 X3M, G80 M3
Join Date: Aug 2007
Location: PA

iTrader: (0)

Quote:
Originally Posted by Simon_135i View Post
I know this is only a pre-production model but if anything I suggest you look at the tips and how far they are sticking out. If it can be reduce, due narrow depth of the tip assembly being seen when looking at it from the side.

I actually wouldn't of minded driving to you guys since my car is practically stock with a JB+ which can be easily removed. I too was looking for a QUAD and made the purchase already with another vendor. Unfortunately, I am still waiting for the product to arrive. If that falls through, I may give you guys a PM.
The tips move out about 3/4" when the car warms up so it does come out a little bit. We made a set of tips that were shorter but I didnt like how it looked because you can see too much of the manifolds behind the tips. Remember, this was done on a stock diffuser. I will work with Peter at VST to make a much better diffuser so that the tips will look more "tucked". Also, it might be the angle of the pics we took too. The tips really look nice and we have received a lot of compliments on it so far (in person).
Appreciate 0
      12-08-2009, 12:38 PM   #73
RPIpower
Captain
RPIpower's Avatar
49
Rep
857
Posts

Drives: F97 X3M, G80 M3
Join Date: Aug 2007
Location: PA

iTrader: (0)

Good news. We have someone coming in at 9:30 on Thursday to do dyno testing. Who ever wants to come and watch can.
Appreciate 0
      12-09-2009, 05:46 PM   #74
RPIpower
Captain
RPIpower's Avatar
49
Rep
857
Posts

Drives: F97 X3M, G80 M3
Join Date: Aug 2007
Location: PA

iTrader: (0)

Ok, well, the appointment flaked on us so we are still looking for another car to dyno test.
Appreciate 0
      12-11-2009, 09:51 AM   #75
BimmerBoi2100
Private First Class
2
Rep
145
Posts

Drives: 2009 Black 135i
Join Date: Jul 2007
Location: Da Desert

iTrader: (0)

Are u guys working on a diffuser as well?
Appreciate 0
      12-11-2009, 01:44 PM   #76
RENN Spec
Major
United_States
141
Rep
1,314
Posts

Drives: 488 Pista, M2CS, Tundra
Join Date: Jul 2009
Location: Arcadia, CA

iTrader: (3)

Yes, Eloy will be working with Vorsteiner on making a nice diffuser for it. In the meanwhile, the only solution will be to cut the OEM piece.
Appreciate 0
      12-11-2009, 02:48 PM   #77
BimmerBoi2100
Private First Class
2
Rep
145
Posts

Drives: 2009 Black 135i
Join Date: Jul 2007
Location: Da Desert

iTrader: (0)

LOL i hope they don't design something too gaudy. how bout a military discount? i'm more than likely gonna wait til the diffuser comes out before i get the exhaust. Are ya'll gonna design some downpipes too?
Appreciate 0
      12-11-2009, 03:07 PM   #78
RPIpower
Captain
RPIpower's Avatar
49
Rep
857
Posts

Drives: F97 X3M, G80 M3
Join Date: Aug 2007
Location: PA

iTrader: (0)

Quote:
Originally Posted by BimmerBoi2100 View Post
LOL i hope they don't design something too gaudy. how bout a military discount? i'm more than likely gonna wait til the diffuser comes out before i get the exhaust. Are ya'll gonna design some downpipes too?
Its a different thing than this gb but RPi does offer USAA member discounts. Im running the exhaust with the stock diffuser right now. I like it
Appreciate 0
      12-11-2009, 04:52 PM   #79
bulldog_yyc
Major General
bulldog_yyc's Avatar
127
Rep
5,040
Posts

Drives: GT3RS
Join Date: Oct 2008
Location: probably work

iTrader: (28)

so where is the dyno?
Appreciate 0
      12-12-2009, 03:05 AM   #80
BimmerBoi2100
Private First Class
2
Rep
145
Posts

Drives: 2009 Black 135i
Join Date: Jul 2007
Location: Da Desert

iTrader: (0)

so is that a yea or a nea on the down pipes?...lol and what's that % on the usaa discount cuz..I'm a member
Appreciate 0
      12-14-2009, 01:53 PM   #81
RPIpower
Captain
RPIpower's Avatar
49
Rep
857
Posts

Drives: F97 X3M, G80 M3
Join Date: Aug 2007
Location: PA

iTrader: (0)

Quote:
Originally Posted by turkish335 View Post
so where is the dyno?
Guy was a no show. I have another car scheduled to come in tomorrow. We'll see if the same thing happens.

Quote:
Originally Posted by BimmerBoi2100 View Post
so is that a yea or a nea on the down pipes?...lol and what's that % on the usaa discount cuz..I'm a member
Give us a call 562-630-5966
Appreciate 0
      12-14-2009, 02:08 PM   #82
BimmerBoi2100
Private First Class
2
Rep
145
Posts

Drives: 2009 Black 135i
Join Date: Jul 2007
Location: Da Desert

iTrader: (0)

Um i'd love to call but i'm trapped in the Iraqi desert til May...my email address is TimLDynamite@gmail.com.
Appreciate 0
      12-15-2009, 11:36 AM   #83
ridin135
Colonel
131
Rep
2,408
Posts

Drives: Depends on the day
Join Date: Dec 2008
Location: Greenville

iTrader: (7)

If I had 3 grand to spend I would try it out. By the way is the one pipe 3.5" or greater, if it is you did your homework

Last edited by ridin135; 12-15-2009 at 11:54 AM..
Appreciate 0
      12-15-2009, 02:27 PM   #84
RPIpower
Captain
RPIpower's Avatar
49
Rep
857
Posts

Drives: F97 X3M, G80 M3
Join Date: Aug 2007
Location: PA

iTrader: (0)

FINALLY got a car to dyno. This car is different and does NOT have the ESS tune. We were only able to get about 32whp. Its not 40hp, but the gains are still pretty impressive. The guy might try out the ESS tune and see how it goes.

Appreciate 0
      12-15-2009, 02:28 PM   #85
RPIpower
Captain
RPIpower's Avatar
49
Rep
857
Posts

Drives: F97 X3M, G80 M3
Join Date: Aug 2007
Location: PA

iTrader: (0)

BTW, I got a chance to do weight comparisons also. The stock exhaust is 61lbs and the full RPi GT is 46lbs.
Appreciate 0
      12-15-2009, 03:23 PM   #86
deamon32
First Lieutenant
Germany
14
Rep
395
Posts

Drives: 135i
Join Date: Apr 2008
Location: Costa Mesa

iTrader: (1)

Quote:
Originally Posted by RPIpower View Post
BTW, I got a chance to do weight comparisons also. The stock exhaust is 61lbs and the full RPi GT is 46lbs.
Some nice dynos, glad you guys got around to getting these up. Cant wait for the final product although the price is still a major factor but I may spend that for a good quality quad system...
__________________
LeMans 135i ///M-sport 6MT
Appreciate 0
      12-15-2009, 04:03 PM   #87
ridin135
Colonel
131
Rep
2,408
Posts

Drives: Depends on the day
Join Date: Dec 2008
Location: Greenville

iTrader: (7)

what was done to the car and what is a vm tune
Appreciate 0
      12-15-2009, 04:09 PM   #88
RPIpower
Captain
RPIpower's Avatar
49
Rep
857
Posts

Drives: F97 X3M, G80 M3
Join Date: Aug 2007
Location: PA

iTrader: (0)

Quote:
Originally Posted by ridin135 View Post
what was done to the car and what is a vm tune
The car is stock except some a tune from a company named VM. I have no clue who that is and I never heard of them so I have no affiliation with that company. It was the closest car to stock I could get. Baseline dynos were pretty consistent so we were able to dyno the exhaust on his car. The power gains were consistently from 28-34whp in the mid range. The only thing I can think of why I got the 40+hp was from the tune and the ram air. They might have made a difference with the stock and aftermarket exhaust.
Appreciate 0
Post Reply

Bookmarks

Tags
dual, exhaust, quad, rpi

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 10:04 AM.




1addicts
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST