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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 > **Riss Racing** 3 inch CATTED downpipes (Prototype)



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      03-27-2008, 08:34 PM   #1
Adam@Riss Racing
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**Riss Racing** 3 inch CATTED downpipes AVAILABLE NOW!!!

Hi everybody,

The long awaited Riss Racing 3" CATTED downpipes are available now!!! Here are the pictures of our Polished and Ceramic Coated!

1. POWER? Catted downpipes will still create tons of power. Our cats are located near the bottom of the downpipes. They have custom Metal Substrate Catalytic converters which flow from 3" to 2.5" smoothly. The reason for this is to continue to build boost up top with 3 inches of flow and putting the cats in before the sensors so we don't have a CEL.

2. DYNO? See above.

3. AVAILABILITY? TODAY.

4. 135i? Yes, it fits the 135i!

Pictures on our site are not updated yet. They should be updated this weekend. They are available for purchase!

NEW UPDATE:
Videos and new pictures below!!!

Revving:


Fly By:


Idle:
Attached Images
      

Last edited by Adam@Riss Racing; 08-09-2008 at 02:06 AM.. Reason: new videos
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      03-27-2008, 08:39 PM   #2
de.abeja
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DEEEEEE-licious!!!

first!
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      03-27-2008, 08:40 PM   #3
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Yes this is what I have waited for!!!
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      03-27-2008, 08:40 PM   #4
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Very cool....
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      03-27-2008, 08:47 PM   #5
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Quote:
Originally Posted by slammedbimmer View Post
How hard is it to change the DPs? time wise, i mean.
Is it worth it to change them out every two years for inspection?
If they are catted they would pass emissions. Also, in Texas they test through the OBD2 port so the BMS o2 simms would pass you for emission purposes....
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      03-27-2008, 08:47 PM   #6
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i would buy these
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      03-27-2008, 08:53 PM   #7
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Quote:
Originally Posted by slammedbimmer View Post
Im registered in MD. but im intrested in some catlesss but im wondering how
PITA it is to change em out. (not trying to thread jack)
It is a PITA but doable from what people say.....

Back on topic. The DPs look great....
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      03-27-2008, 08:54 PM   #8
Adam@Riss Racing
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Quote:
Originally Posted by slammedbimmer View Post
Im registered in MD. but im intrested in some catlesss but im wondering how
PITA it is to change em out. (not trying to thread jack)
Check your laws locally on how they smog. If its through the OBDII, the 02 sims with our Riss Racing Catless DP's will pass.
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      03-27-2008, 08:57 PM   #9
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much better like the previous thread, thx for info Adam. Looks nice, curious about performance compared to RR catless ones.
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      03-27-2008, 08:59 PM   #10
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Quote:
Originally Posted by judec View Post
much better like the previous thread, thx for info Adam. Looks nice, curious about performance compared to RR catless ones.
Not here to stir any fires. We know the first release was a tad bit long. Not trying to make the same mistake twice. We'll open a new thread for new goodies we bring to the table for you guys.
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      03-27-2008, 09:00 PM   #11
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Quote:
Originally Posted by slammedbimmer View Post
Im registered in MD. but im intrested in some catlesss but im wondering how
PITA it is to change em out. I know that these are high flow but the cardboard
stuff in there still looks cramped. cant wait to see the gains/price here! im just
trying to get the most power and still pass emissions!

What cardboard stuff are you referring to????
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      03-27-2008, 09:01 PM   #12
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Quote:
Originally Posted by slammedbimmer View Post
sweet! from most Dynos ive seen, the difference between the cat/catless is usually 5-10hp, no?
I think that sounds about right. Should net pretty good gains though. Hope to get some custom tunes for our catted dp's too.
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      03-27-2008, 09:02 PM   #13
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Quote:
Originally Posted by Adam@Riss Racing View Post
I think that sounds about right. Should net pretty good gains though. Hope to get some custom tunes for our catted dp's too.
Can't wait for these, but please offer them at a competitive price....meaning affordable!!!
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      03-27-2008, 09:04 PM   #14
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Quote:
Originally Posted by cn555ic View Post
Can't wait for these, but please offer them at a competitive price....meaning affordable!!!
I would imagine 300 more then the catless.....
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      03-27-2008, 09:04 PM   #15
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Quote:
Originally Posted by Adam@Riss Racing View Post
Not here to stir any fires. We know the first release was a tad bit long. Not trying to make the same mistake twice. We'll open a new thread for new goodies we bring to the table for you guys.
I did not mean the original RRDP thread. Just the one which - as it seems - got prolly deleted from here, prolly because of the pointlessness of the first post followed by similarly meaningfull responses. Make threads like this one and U'll be good. Make other quality product like your catless DPs and U'll be even better. Make them in time and U'll step over your shadow
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      03-27-2008, 09:07 PM   #16
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Well with these catted ones, I think there is no need for group buy needed to produce them!!!
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      03-27-2008, 09:08 PM   #17
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sweet ... i really hope it will be available before the bimmerfest ...
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      03-27-2008, 09:26 PM   #18
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2007 335i Coupe  [9.00]
can't wait to see the dyno!!
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      03-27-2008, 09:35 PM   #19
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Quote:
Originally Posted by Soni View Post
can't wait to see the dyno!!
Dyno should be getting done this weekend.
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      03-27-2008, 10:02 PM   #20
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cant wait til the dyno numbers come out
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      03-27-2008, 10:58 PM   #21
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For all the PMs I'm getting pricing isn't finished yet we will do a Group Buy price to get things started for those who waited with us here at E90 post so long Thanks!
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      03-27-2008, 11:05 PM   #22
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if it is catted, why the need for 02 sims?
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