XBimmers.com | BMW X6 Forum X5 Forum
 
TireRack





Go Back   XBimmers.com | BMW X6 Forum X5 Forum > BMW X6 Forums > X6 Engine / Exhaust / Drivetrain Modification

Post Reply
 
Thread Tools Search this Thread
      08-31-2012, 09:37 AM   #23
larkinda
Private
 
Drives: 2012 x6m
Join Date: Jun 2012
Location: chicago

Posts: 68
iTrader: (0)

Catted DP

I went with ultimate racing race cat DP and retained all factory heatshields. As far as I know with catless dp the heat shields are eliminated.
There are a lot of claims to huge power increases from catless but if you run a 200 cel race catted dp like ultimate racing or super sprint the performance gains are the same as catless without the side effects of smell and emissions issues. If you do get a cel from race cat ( 50/50 chance)you can ask your tuner to turn off the co2 code only and leave the sensor on and you'll pass emissions. The sound increase is the same either way because the turbos are really what make the sound on these motors. FYI- with race cat you can really hear the turbo whistle from the exaust-sounds real cool.
larkinda is offline  
0
Reply With Quote
      09-02-2012, 12:54 AM   #24
northern2020
Lieutenant
 
northern2020's Avatar
 
Drives: '11 X5 M / '01 B5 S4
Join Date: Jan 2011
Location: Alberta

Posts: 501
iTrader: (0)

Quote:
Originally Posted by larkinda
I went with ultimate racing race cat DP and retained all factory heatshields. As far as I know with catless dp the heat shields are eliminated.
There are a lot of claims to huge power increases from catless but if you run a 200 cel race catted dp like ultimate racing or super sprint the performance gains are the same as catless without the side effects of smell and emissions issues. If you do get a cel from race cat ( 50/50 chance)you can ask your tuner to turn off the co2 code only and leave the sensor on and you'll pass emissions. The sound increase is the same either way because the turbos are really what make the sound on these motors. FYI- with race cat you can really hear the turbo whistle from the exaust-sounds real cool.
I retained all factory heat shields with the Akra catless Dp's...hence the choice to use Akra!

Don't buy the notion that the gains from a race-catted dp are the same from a catless dp set up...until you can show some dyno's!!

Any restriction, be it race cats or cheesecloth will restrict gains vs a
Free flow system.

Congrats on your setup, it's a monster!
__________________
| Vorsteiner front splitter | Vorsteiner Vented Hood | Vorsteiner Rear Diffuser | '13 Retrofit LED adaptive Headlamps | Gloss Black Flush Roof Rails | Inside Performance Vent Digital Data Display | ADV-7 22" | ESS | Akra Catless DP's | Akra Evo Exhaust | KW V3 Coilovers| HR TRAK spacers 20mm |
| '11 X5M | '10 Escalade ESV | '12 Audi S4 | '01 Audi S4 |
northern2020 is offline   Canada
0
Reply With Quote
      10-06-2012, 11:37 AM   #25
MarcG777
Registered
 
Drives: X5M
Join Date: Aug 2012
Location: Vienna, Austria

Posts: 2
iTrader: (0)

Rboosted717, why do you remoe the catless downpipes when you do your service?
MarcG777 is offline  
0
Reply With Quote
      10-06-2012, 01:06 PM   #26
novablackm3
Captain
 
Drives: e92 m3 , e70 x5m
Join Date: Mar 2009
Location: Northern VA

Posts: 640
iTrader: (3)

Send a message via AIM to novablackm3
hmm I'm noticing a lot of surge in city driving and the loss of torque is very apparent , more so than the gains at top end. stock exhaust with catted dp was actually perfect. On the x5m in city driving most of the time the rpm range in d mode is 1000 to 2000 and will shift into 4/5/6 before you even reach 60.

maybe a tune will help
__________________
Alpine White E70 11 X5M - K&N Filter , STI Mag , LI , Self coded , Ultimate DP
Jerez Black E92 10 m3 - STI Mag| LI | RE SSK | AFE Filter | Fabspeed XFC / Xpipe | AA ECU 1.5v | BMW PSW | | Envy Charger | Megan Exhaust | Mich SuperSport | Self coded a bunch of stuff
Jetblack E92 08 m3 - V1 | RE SSK | RR Scoops | AFE Filter | AA ECU <Retired>
novablackm3 is offline  
0
Reply With Quote
      10-07-2012, 06:58 PM   #27
Jimshorts
Second Lieutenant
 
Jimshorts's Avatar
 
Drives: x5m
Join Date: Jul 2012
Location: Live free or die

Posts: 240
iTrader: (0)

Quote:
Originally Posted by novablackm3 View Post
hmm I'm noticing a lot of surge in city driving and the loss of torque is very apparent , more so than the gains at top end. stock exhaust with catted dp was actually perfect. On the x5m in city driving most of the time the rpm range in d mode is 1000 to 2000 and will shift into 4/5/6 before you even reach 60.

maybe a tune will help
Interesting... Would have figured some torque gains. Definitley get a tune to get the most out of those DPs. Good luck picking one. All seem pretty good just double check they can tune to your mods and ask them about future tunes if you continue to mod.
__________________
2010 BMW X5 M Eurocharged: 12.298 @ 112.860 MPH Tune only.
2005 E55 AMG 11.93 @ 117 1/4 mile 7.75 @ 95 1/8mile tune, shorties, street tires. Sold
Jimshorts is offline  
0
Reply With Quote
Post Reply

Bookmarks

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
Forum Jump


All times are GMT -5. The time now is 05:32 AM.




xbimmers
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
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