Feeler on Downpipes

SfValley335i · 05-30-2007, 01:49 AM

Hey Everyone,

I have a friend of a friend is a well known welder/fabricator in Japan. He makes high quality products for an amazing price. I've been in contact with him to make a downpipe for 335's with and without cats. The product would be similar to the one pictured below, basic 3" downpipe TIG weld, and option of a straight through pipes or with high flow cats.

I would like to see how many potential buyers there are for a product like this before we start the press. As many of you know Downpipes help reduce EGT temps, help exhaust flow better and even help the turbos spool faster (get for those with procede/xede/turbo tuners since these products create a slight lag) and ofcourse give a good whp/wtq gains.

Our goal is to make the product for a decent amount less than the SS downpipe.

We plan to get a prototype model made in a few weeks with dyno's.
*Dependant on interest

Thanks,
Z

j|rz44 · 05-30-2007, 02:04 AM

im in...

SfValley335i · 05-30-2007, 02:30 AM

1. jmramos44
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Walked U · 05-30-2007, 04:23 AM

If your going to make it without primary cats. You would have to get ahold of a tuner and tell them to tune out the CEL when you remove the DP's.

But other than that complication i would be interested to see how it goes.

CASHBY · 05-30-2007, 10:33 AM

Quote:

Originally Posted by Walked U

If your going to make it without primary cats. You would have to get ahold of a tuner and tell them to tune out the CEL when you remove the DP's.

But other than that complication i would be interested to see how it goes.

Believe it or not, I dont think it is going to throw a cell. I had my exhaust off with my POST 02 sensors exposed completly, drove around for a few days and didnt get an CEL.

Also another member on the board has DP's and he said he hasnt thrown a CEL yet.

So lets hope for that, but IIRC, Shiv said he can do something if it does happen.

but count me in of course.

PresaMat · 05-30-2007, 11:43 AM

Im in price/dyno dependant.

Mat

Sal@AUTOcouture · 05-30-2007, 12:41 PM

Quote:

Originally Posted by PresaMat

Im in price/dyno dependant.

Mat

me too

ArmyBimmerDude · 05-30-2007, 01:03 PM

Quote:

Originally Posted by AutoCouture

me too

Me too

Cyruz · 05-30-2007, 09:31 PM

intrest lvl rising here as well, any idea on the price?

BoostedBMW · 05-30-2007, 09:57 PM

I'm interested also.

ironic · 05-30-2007, 09:57 PM

in, price dept

rotaz · 05-30-2007, 11:50 PM

in as well...price/dyno dependant.

SfValley335i · 05-31-2007, 01:35 AM

so what price would you guys pay for a downpipe without Cats? and what price with highflow cats?

PresaMat · 05-31-2007, 02:23 AM

Quote:

Originally Posted by SfValley335i

so what price would you guys pay for a downpipe without Cats? and what price with highflow cats?

$10 and $15 respectively. JK. In my opinion it would be hard to toss out a number without more information. Now if you said "Hey I made a set of replica SS downpipes" that would be another story...

05-30-2007, 01:49 AM	#1
SfValley335i Colonel 167 Rep 2,409 Posts Drives: Current:135i Sold:335i sedan Join Date: Mar 2007 Location: City of Angels iTrader: (8)	Feeler on Downpipes Hey Everyone, I have a friend of a friend is a well known welder/fabricator in Japan. He makes high quality products for an amazing price. I've been in contact with him to make a downpipe for 335's with and without cats. The product would be similar to the one pictured below, basic 3" downpipe TIG weld, and option of a straight through pipes or with high flow cats. I would like to see how many potential buyers there are for a product like this before we start the press. As many of you know Downpipes help reduce EGT temps, help exhaust flow better and even help the turbos spool faster (get for those with procede/xede/turbo tuners since these products create a slight lag) and ofcourse give a good whp/wtq gains. Our goal is to make the product for a decent amount less than the SS downpipe. We plan to get a prototype model made in a few weeks with dyno's. *Dependant on interest Thanks, Z
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05-30-2007, 02:04 AM	#2
j\|rz44 Lieutenant Colonel 45 Rep 1,683 Posts Drives: 335i\|E92 Join Date: Oct 2006 Location: Lost iTrader: (2) Garage List 07 335i [0.00]	im in... __________________ Life is Good
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05-30-2007, 02:30 AM	#3
SfValley335i Colonel 167 Rep 2,409 Posts Drives: Current:135i Sold:335i sedan Join Date: Mar 2007 Location: City of Angels iTrader: (8)	1. jmramos44 2. 3. 4. 5. 6. 7. 8. 9. 10.
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05-30-2007, 04:23 AM	#4
Walked U Brigadier General 186 Rep 3,125 Posts Drives: Too many to list Join Date: Nov 2006 Location: USA iTrader: (5)	If your going to make it without primary cats. You would have to get ahold of a tuner and tell them to tune out the CEL when you remove the DP's. But other than that complication i would be interested to see how it goes. __________________ Previous - E90 335i, E82 135i, E89 Z4 3.5SI, Range Rover S/C, Ultra White RCF, Maserati Granturismo Current Lexus: SMG LC500 performance package Porsche:1973 911E Ferrari 575 SA, 458 Italia
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05-30-2007, 11:43 AM	#6
PresaMat Major 35 Rep 1,169 Posts Drives: 67 GT500,69 Boss 429, 335i Join Date: Sep 2006 Location: Houston,TX iTrader: (0) Garage List 1967 Shelby Mustang ... [0.00]	Im in price/dyno dependant. Mat
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05-30-2007, 09:31 PM	#9
Cyruz Captain 84 Rep 619 Posts Drives: Montego Blue 335i Join Date: Nov 2006 Location: NY iTrader: (0) Garage List 2007 335i [0.00] 2007 335i [0.00]	intrest lvl rising here as well, any idea on the price? __________________ Living on the fringe of lunacy my zenfolio photo gallery
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05-30-2007, 09:57 PM	#10
BoostedBMW Moderator 134 Rep 6,775 Posts Drives: TiAg E92 335 Join Date: Oct 2006 Location: Raleigh, NC iTrader: (14) Garage List 2003 S2000 [0.00]	I'm interested also. __________________ -Michael. Berlina Black S2000 CR is now in the garage l 19" Rial Daytona Race l KW V2 l Eisenhaus Race Exhaust l
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05-30-2007, 09:57 PM	#11
ironic Major General 267 Rep 8,338 Posts Drives: Jet Black 335i Join Date: Dec 2006 Location: San Francisco, Ca iTrader: (22)	in, price dept __________________ Widebody 335i Project Car BUILD \| PHOTOSHOOT
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05-30-2007, 11:50 PM	#12
rotaz Captain 61 Rep 698 Posts Drives: GT3, 4Runner S/C Join Date: Sep 2006 Location: SF Bay iTrader: (0)	in as well...price/dyno dependant. __________________ \|Arrived 12/14/06\| JP Vizage Kit\| Gone 4/4/09 \|
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05-31-2007, 01:35 AM	#13
SfValley335i Colonel 167 Rep 2,409 Posts Drives: Current:135i Sold:335i sedan Join Date: Mar 2007 Location: City of Angels iTrader: (8)	so what price would you guys pay for a downpipe without Cats? and what price with highflow cats?
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