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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > UR Catless Down pipes / Stock Exhaust ?



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      04-05-2010, 02:02 PM   #1
labedra
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UR Catless Down pipes / Stock Exhaust ?

Hello everyone I have been on this forum for months just reading up on a bunch of upgrades but I can't seem to find the DP + exhaust setup below:

Ultimate Racing Catless Down pipes with stock exhaust?

Anyone ran this setup ?

Post video link or sound if you have this setup

Thanks.
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Last edited by labedra; 04-05-2010 at 03:21 PM.
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      04-05-2010, 04:12 PM   #2
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I have that set up. Sorry no video clips. But a little louder sounding, better response. Unplug the exhaust flapper in the rear if you want a little more sound in addition to the dp's. Overall its good performance with stock exhaust sound qualities. No where near as loud as any cat back system though.
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      04-05-2010, 04:14 PM   #3
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i have AR catless DPs with stock exhaust right now i thin k i have a vid of it but only when i was seafoaming the car if u wanna see that
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      04-05-2010, 04:18 PM   #4
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who sells UR stuff around here might buy the CAI.
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      04-05-2010, 10:00 PM   #5
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Quote:
Originally Posted by BoostedCosta View Post
i have AR catless DPs with stock exhaust right now i thin k i have a vid of it but only when i was seafoaming the car if u wanna see that
Can you post the video?
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      04-05-2010, 10:08 PM   #6
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      04-05-2010, 10:13 PM   #7
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Quote:
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is this just ar catless downpipes into a completely stock exhaust or have the secondary cats been removed as well? any other modifications to the exhaust?
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      04-05-2010, 10:15 PM   #8
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Quote:
Originally Posted by mwahlert View Post
is this just ar catless downpipes into a completely stock exhaust or have the secondary cats been removed as well? any other modifications to the exhaust?
compeletely stock car with just AR DPS..if doing the "golf tee mod: counts then yes i have that done as well
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      04-05-2010, 10:34 PM   #9
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Quote:
Originally Posted by BoostedCosta View Post
compeletely stock car with just AR DPS..if doing the "golf tee mod: counts then yes i have that done as well
wow sounds really good....

i look forward to finally installing my DPs.
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      04-05-2010, 10:40 PM   #10
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Watch 1:15-1:25. The exhaust makes smoke rings.
Awesome. lol

Seafoaming looks scary.
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      04-06-2010, 12:24 AM   #11
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Quote:
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This shiiit is good for when the cops are chasing you..... hehe

LOL nice smoke screen hehehehe......... I'm about to pull the trigger on UR catless down pipes and also ....Ya I have actually disconnected the actuator to open up the driver side exhaust instead of doing the golf tee mod like a year ago... A lot easier....., just pull that plug and wake the neighboors up . So out of curiosity why did you seafoam your ride with 7k on it? Also did you see noticable HP gain with stock exhaust and DPs? UR claims ~28 hp gains with these on stock exhaust.
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      04-06-2010, 12:26 AM   #12
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I running stock exhaust with DP's. I think it's perfect. Not too loud, but quiet enough!
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      04-06-2010, 01:35 AM   #13
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Sounds very nice - does anyone have a clips of *catted* dps with stock exhaust?
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      04-06-2010, 02:07 AM   #14
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I'm guessig the check engine light will come on after installing these bad boys (UR DPs) so what you guys doo so the ECU doesn't reak out ? o2 sim or what ? Any recommendations ?

Thanks.
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