E90Post
 


Bimmer Retrofit
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning > CP-E 5" Catless Downpipe for N55



Reply
 
Thread Tools Search this Thread
      10-06-2011, 09:26 PM   #1
turugara
Major
turugara's Avatar
20
Rep
1,307
Posts

 
Drives: 335i Coupe, 6 Speed
Join Date: May 2011
Location: NYC

iTrader: (5)

Garage List
2011 BMW 335i  [4.72]
CP-E 5" Catless Downpipe for N55



Initial Thoughts
________________________________________________
I recently had the opportunity to offer my N55 335i to be Custom Performance Engineering's test platform for their 5" Catless downpipe.
5" I said? Madness. Impossible.
SO I went down to headquarters in Beltsville, MD and called their bluff.

Lo and behold... here it was



This is me with the catless DP in front of my face.



After a day of dyno runs with baselines, JB4 Stage 2 Map 1, Map 2, WOT pulls.....

We have a bunch of pictures, video, and data.

Dyno's
________________________________________________

A 70MPH fan was used. 3 pulls were done for consistency for each test.

Dyno #1: Stock Baseline vs Stock + DP


Dyno #2: JB4 Stage 2 Map 1 12.5 PSI VS Same tune + DP



Dyno #3: JB4 Stage 2 Map 2 14 PSI vs Stock tune Baseline



Pictures
________________________________________________
















MORE TO COME SOON!

Many thanks to Mike @ VAC for the hookup!

Last edited by turugara; 10-08-2011 at 01:47 PM.
Appreciate 0
      10-06-2011, 09:27 PM   #2
nkadisha
Lieutenant
nkadisha's Avatar
United_States
5
Rep
529
Posts

 
Drives: N54 335
Join Date: Feb 2011
Location: Los Angeles

iTrader: (3)

Let's see the dynos!
__________________
Appreciate 0
      10-06-2011, 09:31 PM   #3
CPWINCH
Brigadier General
CPWINCH's Avatar
United_States
39
Rep
3,562
Posts

 
Drives: F32 4 Series
Join Date: May 2010
Location: Los Angeles

iTrader: (5)

that sounds amazing! 5inch is to rediculous tho and i think unecassary. just adds weight

what exhaust do u have
__________________
Follow my BMW instagram @Bmwmodification Let me know you are from bimmerpost and i'll follow back
Appreciate 0
      10-06-2011, 09:36 PM   #4
turugara
Major
turugara's Avatar
20
Rep
1,307
Posts

 
Drives: 335i Coupe, 6 Speed
Join Date: May 2011
Location: NYC

iTrader: (5)

Garage List
2011 BMW 335i  [4.72]
Quote:
Originally Posted by CPWINCH View Post
that sounds amazing! 5inch is to rediculous tho and i think unecassary. just adds weight

what exhaust do u have
Vishnu Catback Exhaust.

I am not qualified to answer the 3.5" vs 4" vs 5" DP question so I'll let anyone with more knowledge handle it. I just know that there was a significant difference between baseline stock vs stock + 5" DP. Whether this difference is greater than what can be achieved with other brand's DP's of various sizes, idk.
Appreciate 0
      10-06-2011, 09:39 PM   #5
CJ421
Brigadier General
CJ421's Avatar
United_States
60
Rep
3,263
Posts

 
Drives: 2011 E92 335i
Join Date: Feb 2011
Location: PA

iTrader: (1)

Garage List
2011 BMW 335i  [4.66]
Wow that is friggin' ridiculous!!

I cannot wait to see this in person.
__________________
2011 BMW E92 335i, 6MT, Le Mans blue - Quaife LSD, JRZ RS Pro, JRZ camber plates, Eibach ERS, full M3 susp, custom toe arms, Powergrid end-links, SS brake lines, brake ducting, Michelin PSS, UUC SSK, ETS FMIC, ER CP, Perf. Exhaust, VAC RSIK, Sparcos; work by VAC Motorsports in Philadelphia
Appreciate 0
      10-06-2011, 09:39 PM   #6
CPWINCH
Brigadier General
CPWINCH's Avatar
United_States
39
Rep
3,562
Posts

 
Drives: F32 4 Series
Join Date: May 2010
Location: Los Angeles

iTrader: (5)

Quote:
Originally Posted by turugara View Post
Vishnu Catback Exhaust.

I am not qualified to answer the 3.5" vs 4" vs 5" DP question so I'll let anyone with more knowledge handle it. I just know that there was a significant difference between baseline stock vs stock + 5" DP. Whether this difference is greater than what can be achieved with other brand's DP's of various sizes, idk.
oh there will definantly be gains. justt as much as 3.5 and 4
__________________
Follow my BMW instagram @Bmwmodification Let me know you are from bimmerpost and i'll follow back
Appreciate 0
      10-06-2011, 09:46 PM   #7
turugara
Major
turugara's Avatar
20
Rep
1,307
Posts

 
Drives: 335i Coupe, 6 Speed
Join Date: May 2011
Location: NYC

iTrader: (5)

Garage List
2011 BMW 335i  [4.72]
Quote:
Originally Posted by CPWINCH View Post
oh there will definantly be gains. justt as much as 3.5 and 4
We dyno'ed all day. Just waiting on getting all the graphs sorted out, sent to me, so I can post. I think baseline on the mustang dyno was ~255hp.
Appreciate 0
      10-06-2011, 10:10 PM   #8
mrj25
Colonel
mrj25's Avatar
United_States
44
Rep
2,163
Posts

 
Drives: 2011 335i E90 LCI
Join Date: Dec 2010
Location: OC-LA, CALI

iTrader: (21)

that downpipe is on roids! sounds good though...i'm curious to see the dynos on it.
Appreciate 0
      10-07-2011, 12:00 AM   #9
ian2002525
台灣 台北市
ian2002525's Avatar
Taiwan
18
Rep
1,266
Posts

 
Drives: 2009 GT-R Premium
Join Date: Jun 2010
Location: Brentwood, TN/台灣

iTrader: (6)

Garage List
2011 335i coupe  [4.50]
Send a message via Skype™ to ian2002525
doesn't hear turbo spool though...
Appreciate 0
      10-07-2011, 12:14 AM   #10
turugara
Major
turugara's Avatar
20
Rep
1,307
Posts

 
Drives: 335i Coupe, 6 Speed
Join Date: May 2011
Location: NYC

iTrader: (5)

Garage List
2011 BMW 335i  [4.72]
Quote:
Originally Posted by ian2002525 View Post
doesn't hear turbo spool though...
GoPro didn't capture it. In real life you hear the turbo spool like no other. Compared against a friend's AR 4" + Performance Exhaust N55, its much more noticeable with the CP-E 5" + Vishnu Catback combo. That's something that will require a better camera + mic setup to capture or your just going to have to take my word for it. Better yet, visit Philly!
Appreciate 0
      10-07-2011, 03:05 AM   #11
shockin330i
Brigadier General
59
Rep
4,206
Posts

 
Drives: blue
Join Date: Jan 2007
Location: f y'all, I'm from Texas (RGV)

iTrader: (1)

subscribing
__________________
ERnie 2011 AW/e90/n55 12.9@107.53mph
*N55 Moderator*
I'm crawling similar to a ant cuz I'm low to the earth
Appreciate 0
      10-07-2011, 04:56 AM   #12
Slops
Major General
Slops's Avatar
South Africa
61
Rep
5,370
Posts

 
Drives: 2005 C55 AMG
Join Date: Jan 2011
Location: Oxford

iTrader: (2)

Thas a huge bitch lol!!!
Appreciate 0
      10-07-2011, 07:12 AM   #13
FrankiE90
Major General
FrankiE90's Avatar
United_States
266
Rep
8,666
Posts

 
Drives: Krooked Sk8board
Join Date: Feb 2008
Location: Pasadena, Ca

iTrader: (11)

Send a message via Skype™ to FrankiE90
that DP looks like a little happy fat kid.
give him some cake.
5" -
did u ask them for a turbo upgrade

always good to see new mods for the N55.
__________________
FrankiE90 AKA:.[The TANK] *CLICK THE SIG
2011 335 E90 MTECH 6MT KW V3 INJEN Intake Berk 4" DP Vanguard V2 exhaust Procede V5 Stoptech BBK RPI Scoops Karbonwerk CSL Trunk LUX H8 19" BBS LM 18" BBS GT4
Appreciate 0
      10-07-2011, 09:09 AM   #14
Pepe_pr
Lieutenant
Puerto Rico
7
Rep
534
Posts

 
Drives: 135i black on black
Join Date: Sep 2010
Location: San Juan PR

iTrader: (1)

its huge!!! lets see the Dyno sheets!!
__________________
USED TO HAVE A 385 whp 479 tq N55 335 2011 (AT) AND NOW A 135 M package 2010 (AT) 447whp/504tq
Appreciate 0
      10-07-2011, 09:23 AM   #15
turugara
Major
turugara's Avatar
20
Rep
1,307
Posts

 
Drives: 335i Coupe, 6 Speed
Join Date: May 2011
Location: NYC

iTrader: (5)

Garage List
2011 BMW 335i  [4.72]
Quote:
Originally Posted by FrankiE90 View Post
did u ask them for a turbo upgrade
I did. Told them I'd be down to try that too.
Appreciate 0
      10-07-2011, 10:16 AM   #16
CJ421
Brigadier General
CJ421's Avatar
United_States
60
Rep
3,263
Posts

 
Drives: 2011 E92 335i
Join Date: Feb 2011
Location: PA

iTrader: (1)

Garage List
2011 BMW 335i  [4.66]
Quote:
Originally Posted by turugara View Post
GoPro didn't capture it. In real life you hear the turbo spool like no other. Compared against a friend's AR 4" + Performance Exhaust N55, its much more noticeable with the CP-E 5" + Vishnu Catback combo. That's something that will require a better camera + mic setup to capture or your just going to have to take my word for it. Better yet, visit Philly!
__________________
2011 BMW E92 335i, 6MT, Le Mans blue - Quaife LSD, JRZ RS Pro, JRZ camber plates, Eibach ERS, full M3 susp, custom toe arms, Powergrid end-links, SS brake lines, brake ducting, Michelin PSS, UUC SSK, ETS FMIC, ER CP, Perf. Exhaust, VAC RSIK, Sparcos; work by VAC Motorsports in Philadelphia
Appreciate 0
      10-07-2011, 11:08 AM   #17
ar design
ar design's Avatar
United_States
89
Rep
4,411
Posts

 
Drives: 04 M3
Join Date: Jan 2008
Location: Denver, CO

iTrader: (9)

Send a message via AIM to ar design
Looks like a really nice piece. 4" will support well over 1000whp with ease, not sure what the point of 5" is but...
__________________
-Critter
Appreciate 0
      10-07-2011, 11:25 AM   #18
IancoleTX
Dillo boxers
IancoleTX's Avatar
United_States
40
Rep
3,041
Posts

 
Drives: BMW
Join Date: Jan 2010
Location: USA

iTrader: (13)

Ya I don't get the whole 3.5 vs 4 vs 5 inch DP thing. Don't see what kind of difference that could possibly make. Sounds great though bro
Appreciate 0
      10-07-2011, 11:49 AM   #19
turugara
Major
turugara's Avatar
20
Rep
1,307
Posts

 
Drives: 335i Coupe, 6 Speed
Join Date: May 2011
Location: NYC

iTrader: (5)

Garage List
2011 BMW 335i  [4.72]
Quote:
Originally Posted by CJ421 View Post
Nothing but <3 for you Charles.

But there is a rediculous amount more turbo spool.
Appreciate 0
      10-07-2011, 12:18 PM   #20
Slops
Major General
Slops's Avatar
South Africa
61
Rep
5,370
Posts

 
Drives: 2005 C55 AMG
Join Date: Jan 2011
Location: Oxford

iTrader: (2)

Wonder if it hits anything down there??? My Vishnu dp was a tight fit... I dun wanna know how tight this guy is!
Appreciate 0
      10-07-2011, 10:39 PM   #21
turugara
Major
turugara's Avatar
20
Rep
1,307
Posts

 
Drives: 335i Coupe, 6 Speed
Join Date: May 2011
Location: NYC

iTrader: (5)

Garage List
2011 BMW 335i  [4.72]
Dyno's posted! More pics added also
Appreciate 0
      10-07-2011, 10:43 PM   #22
turugara
Major
turugara's Avatar
20
Rep
1,307
Posts

 
Drives: 335i Coupe, 6 Speed
Join Date: May 2011
Location: NYC

iTrader: (5)

Garage List
2011 BMW 335i  [4.72]
JB4 Stage 2 Map 1 vs Map 2 doesn't show a significant difference. Is Map 2 really pushing out 14PSI?
Appreciate 0
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 01:47 PM.




e90post
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