F30POST
F30POST
2012-2015 BMW 3-Series and 4-Series Forum
BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read
BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > N55 Turbo Engine / Drivetrain / Exhaust Modifications > CHALLENGE - F30 335 - HFC and Catless Downpipes - Now Released! - Pics inside -
MINHS Auto Care Center
Closed Thread
 
Thread Tools Search this Thread
      02-18-2013, 06:55 PM   #133
mikew2069
Major
20

 
mikew2069's Avatar
 
Drives: F30 335i MSport
Join Date: Oct 2012
Location: Houston


Posts: 1,314
iTrader: (1)

Quote:
Originally Posted by GTM_Challenge View Post
Mike,

Its much easier to follow the sensors back, unplug them, and removed the o2 sensors with the cat off the car. Youll need to access where they plug in up top for best access.
Yea at this point I may just pay to have it done. Not sure I feel like messing with it again. At one point I did try to trace the sensors back but I didn't have any luck with a quick once over. In past cars I just unscrewed the sensors while I was under the car.

If someone can post a pic of the plugs under the hood before Wed, I'll try it again this weekend. Otherwise I'll just pay to have it done.
__________________
2013 F30 335i ///M-Sport
Forgestar/Challenge/BMS JB4
Wagner/Evo Race/M-Performance
Appreciate 0
      02-18-2013, 08:05 PM   #134
m3 guy
Major
United_States
20

 
m3 guy's Avatar
 
Drives: 2012 X5M
Join Date: Apr 2012
Location: Hawaii


Posts: 1,327
iTrader: (3)

Quote:
Originally Posted by mikew2069
Quote:
Originally Posted by GTM_Challenge View Post
Mike,

Its much easier to follow the sensors back, unplug them, and removed the o2 sensors with the cat off the car. Youll need to access where they plug in up top for best access.
Yea at this point I may just pay to have it done. Not sure I feel like messing with it again. At one point I did try to trace the sensors back but I didn't have any luck with a quick once over. In past cars I just unscrewed the sensors while I was under the car.

If someone can post a pic of the plugs under the hood before Wed, I'll try it again this weekend. Otherwise I'll just pay to have it done.
Just posted pics for you in my journal.
__________________

2013 F30 335 Estoril Blue-Black SOLD
2012 E70 X5M Monte Carlo Blue-Silverstone Journal
Appreciate 0
      02-18-2013, 08:26 PM   #135
mikew2069
Major
20

 
mikew2069's Avatar
 
Drives: F30 335i MSport
Join Date: Oct 2012
Location: Houston


Posts: 1,314
iTrader: (1)

Quote:
Originally Posted by m3 guy View Post
Just posted pics for you in my journal.
Dude, you rock. I actually went to those two plugs but it threw me off b/c the one silver cord turns black and I wasn't sure b/c I couldn't actually see the transition.

I'll be knocking this out Saturday morning....
__________________
2013 F30 335i ///M-Sport
Forgestar/Challenge/BMS JB4
Wagner/Evo Race/M-Performance
Appreciate 0
      02-21-2013, 08:10 AM   #136
mikew2069
Major
20

 
mikew2069's Avatar
 
Drives: F30 335i MSport
Join Date: Oct 2012
Location: Houston


Posts: 1,314
iTrader: (1)

I was actually able to install my HFC DP yesterday I posted a before and after video in this downpipe thread: http://www.f30post.com/forums/showthread.php?t=803655

Didn't want to take over Challenge's thread...
__________________
2013 F30 335i ///M-Sport
Forgestar/Challenge/BMS JB4
Wagner/Evo Race/M-Performance

Last edited by mikew2069; 02-21-2013 at 11:09 AM.
Appreciate 0
      02-24-2013, 01:08 PM   #137
nsquared
[Versatile]
24

 
nsquared's Avatar
 
Drives: (S)LOW.
Join Date: Jun 2011
Location: California & Utah


Posts: 1,519
iTrader: (0)

Quote:
Originally Posted by mikew2069 View Post
I was actually able to install my HFC DP yesterday I posted a before and after video in this downpipe thread: http://www.f30post.com/forums/showthread.php?t=803655

Didn't want to take over Challenge's thread...
Thanks.
__________________
'13 AW F30 335i ///M-Sport 6MT. OEM(+).

[Liquid Innovations] [Envisions] [Rob's Speed Shop]
Appreciate 0
      03-01-2013, 10:48 PM   #138
E36toF30
Second Lieutenant
6

 
Drives: 2011 E92 M3 DCT
Join Date: Feb 2012
Location: CO


Posts: 298
iTrader: (0)

Has anyone actually received and installed the Challenge catback exhaust? I don't see anywhere to actually buy it. Impressions on how it sounds compared to stock?
Appreciate 0
      03-02-2013, 08:43 AM   #139
mikew2069
Major
20

 
mikew2069's Avatar
 
Drives: F30 335i MSport
Join Date: Oct 2012
Location: Houston


Posts: 1,314
iTrader: (1)

Quote:
Originally Posted by E36toF30 View Post
Has anyone actually received and installed the Challenge catback exhaust? I don't see anywhere to actually buy it. Impressions on how it sounds compared to stock?
I think Challenge has decided that they don't want to share and their car will be the only car on the streets with the Challenge catback

No, in all seriousness, i don't think they've shipped any b/c they were backed up with production of some other products.
__________________
2013 F30 335i ///M-Sport
Forgestar/Challenge/BMS JB4
Wagner/Evo Race/M-Performance
Appreciate 0
      04-24-2013, 06:23 PM   #140
GTM_Challenge
United_States
111

 
GTM_Challenge's Avatar
 
Drives: E92 M3,X5M,F30 335
Join Date: Jan 2010
Location: Chicago


Posts: 2,794
iTrader: (7)

Send a message via AIM to GTM_Challenge
Quote:
Originally Posted by mikew2069 View Post
I think Challenge has decided that they don't want to share and their car will be the only car on the streets with the Challenge catback

No, in all seriousness, i don't think they've shipped any b/c they were backed up with production of some other products.
Mike, if it helps any, our car has been running around with the stock exhaust had to surrender it to the fab department months ago

BO fills plus stock units are in works now though


Catless and HFC Downpipes are in stock and plenty running around on customers cars though
Appreciate 0
      04-24-2013, 06:38 PM   #141
mikew2069
Major
20

 
mikew2069's Avatar
 
Drives: F30 335i MSport
Join Date: Oct 2012
Location: Houston


Posts: 1,314
iTrader: (1)

Yes, I know - just giving you a hard time. Loving my HFC dp and SS lines!
__________________
2013 F30 335i ///M-Sport
Forgestar/Challenge/BMS JB4
Wagner/Evo Race/M-Performance
Appreciate 0
      04-24-2013, 08:14 PM   #142
larryzhou
Private
1

 
Drives: 120i mt
Join Date: Mar 2010
Location: shanghai


Posts: 97
iTrader: (0)

it looks sweet!!!
Appreciate 0
      07-01-2013, 02:16 PM   #143
335if30uae
Enlisted Member
United Arab Emirates
1

 
Drives: 3351 f30 2012
Join Date: Jun 2012
Location: UAE


Posts: 38
iTrader: (0)

seems only one member mikew2069 has installed HFC dp from Challenger... even vendor does not have a proper report ...please reply to following questions.

1 . does it throw code ? (HFC dp from Challenger)
2. What is the increase in bhp/TQ to stock.... any dyno comparison ?
3. is there any other brand with effective cat so there will not be any CEL ?
Appreciate 0
      07-01-2013, 02:33 PM   #144
tdizzle
Lieutenant Colonel
United_States
18

 
Drives: 2012 335i Sport
Join Date: Aug 2012
Location: Memphis


Posts: 1,779
iTrader: (0)

Quote:
Originally Posted by 335if30uae View Post
seems only one member mikew2069 has installed HFC dp from Challenger... even vendor does not have a proper report ...please reply to following questions.

1 . does it throw code ? (HFC dp from Challenger)
2. What is the increase in bhp/TQ to stock.... any dyno comparison ?
3. is there any other brand with effective cat so there will not be any CEL ?
Don't quote me as I'm no expert, but if my understanding on how the exhaust is monitored, you will throw a code eventually if you venture away from stock (even High Flow should read abnormal). You can get a tune to auto delete the code if you want but without a tune it will be there.

Increase should be about 30hp with all else stock, but that is dependent on tunes, with the freer flowing nature of going aftermarket DP you can more safely turn up the boost and get more gains (see Stage 2 JB4 and DP producing 360hp/410tq at the wheels with no other mods).

You can go to the BMS website and look at dynos with stock and tuned and with DP. Looks like their stock car produced about 275hp and stock map produced 305hp with a DP. And up from there using Map and and Map 2.
Appreciate 0
      07-01-2013, 02:43 PM   #145
335if30uae
Enlisted Member
United Arab Emirates
1

 
Drives: 3351 f30 2012
Join Date: Jun 2012
Location: UAE


Posts: 38
iTrader: (0)

thanks .. running with JB4 stage 2 -its great... but feels stock cat and dp is restrictive...at the same time if challenger HFC dp throws codes.. it a worry for me.. I will wait till more are installed..
Appreciate 0
      07-01-2013, 03:17 PM   #146
tdizzle
Lieutenant Colonel
United_States
18

 
Drives: 2012 335i Sport
Join Date: Aug 2012
Location: Memphis


Posts: 1,779
iTrader: (0)

Quote:
Originally Posted by 335if30uae View Post
thanks .. running with JB4 stage 2 -its great... but feels stock cat and dp is restrictive...at the same time if challenger HFC dp throws codes.. it a worry for me.. I will wait till more are installed..
I'm 99% sure it will throw a code (although JB4 Stage 2 would delete it). It's just an exhaust code saying the the cat isn't doing as good of a job as it should with filtering emissions (which is obvious since that's how you're getting more flow).

But should you take it to the dealer and the CEL pops up they'll quickly figure out that you have an aftermarket DP. They can't exactly void your whole warranty because of it (maybe exhaust related issues should they creep up). The general idea is that if something breaks and they can attribute it to a mod then it's on your dime to fix it. Not sure what a freer flowing down pipe could break though. Rumor is that it's actually easier on the turbos but I've only heard a person or two mention that as it's not usually the selling factor.
Appreciate 0
      07-01-2013, 03:23 PM   #147
mikew2069
Major
20

 
mikew2069's Avatar
 
Drives: F30 335i MSport
Join Date: Oct 2012
Location: Houston


Posts: 1,314
iTrader: (1)

Quote:
Originally Posted by tdizzle View Post
Don't quote me as I'm no expert, but if my understanding on how the exhaust is monitored, you will throw a code eventually if you venture away from stock (even High Flow should read abnormal). You can get a tune to auto delete the code if you want but without a tune it will be there.

Increase should be about 30hp with all else stock, but that is dependent on tunes, with the freer flowing nature of going aftermarket DP you can more safely turn up the boost and get more gains (see Stage 2 JB4 and DP producing 360hp/410tq at the wheels with no other mods).

You can go to the BMS website and look at dynos with stock and tuned and with DP. Looks like their stock car produced about 275hp and stock map produced 305hp with a DP. And up from there using Map and and Map 2.
Quote:
Originally Posted by tdizzle View Post
I'm 99% sure it will throw a code (although JB4 Stage 2 would delete it). It's just an exhaust code saying the the cat isn't doing as good of a job as it should with filtering emissions (which is obvious since that's how you're getting more flow).

But should you take it to the dealer and the CEL pops up they'll quickly figure out that you have an aftermarket DP. They can't exactly void your whole warranty because of it (maybe exhaust related issues should they creep up). The general idea is that if something breaks and they can attribute it to a mod then it's on your dime to fix it. Not sure what a freer flowing down pipe could break though. Rumor is that it's actually easier on the turbos but I've only heard a person or two mention that as it's not usually the selling factor.
That pretty much sums it up. There are actually quite a few people running Challenge's HFC dp and a couple have reported no codes. I'm running the JB4 so it deletes any would be dp cel.
__________________
2013 F30 335i ///M-Sport
Forgestar/Challenge/BMS JB4
Wagner/Evo Race/M-Performance
Appreciate 0
      07-01-2013, 06:11 PM   #148
GTM_Challenge
United_States
111

 
GTM_Challenge's Avatar
 
Drives: E92 M3,X5M,F30 335
Join Date: Jan 2010
Location: Chicago


Posts: 2,794
iTrader: (7)

Send a message via AIM to GTM_Challenge
Quote:
Originally Posted by 335if30uae View Post
thanks .. running with JB4 stage 2 -its great... but feels stock cat and dp is restrictive...at the same time if challenger HFC dp throws codes.. it a worry for me.. I will wait till more are installed..
We have about 15-20 HFC downpipes out there with no CEL. I have only seen once customer so far that has had it pop up. It would only come on every once any awhile though. Unfortunately BMW changes software versions often and sometimes changes O2 sensor sensitivity so we can never guarantee no CEL but so far its looking good
Appreciate 0
      07-02-2013, 05:59 AM   #149
335if30uae
Enlisted Member
United Arab Emirates
1

 
Drives: 3351 f30 2012
Join Date: Jun 2012
Location: UAE


Posts: 38
iTrader: (0)

Quote:
Originally Posted by GTM_Challenge View Post
We have about 15-20 HFC downpipes out there with no CEL. I have only seen once customer so far that has had it pop up. It would only come on every once any awhile though. Unfortunately BMW changes software versions often and sometimes changes O2 sensor sensitivity so we can never guarantee no CEL but so far its looking good
thanks .. with JB4 stage 2 CEL will be cancelled ... i have been trying to get courier charges as i live in UAE..
Appreciate 0
      07-02-2013, 05:46 PM   #150
RollingLower42
Lieutenant
11

 
RollingLower42's Avatar
 
Drives: 2012 BMW 335I
Join Date: May 2012
Location: Los Angeles


Posts: 535
iTrader: (0)

Garage List
Quote:
Originally Posted by GTM_Challenge View Post
We have about 15-20 HFC downpipes out there with no CEL. I have only seen once customer so far that has had it pop up. It would only come on every once any awhile though. Unfortunately BMW changes software versions often and sometimes changes O2 sensor sensitivity so we can never guarantee no CEL but so far its looking good
I was the guy who would get CEL light, but it only seemed to happen when I put in 100 Octane.

Also, it wouldn't always be up. Was more sporadic than anything, and seemed to reset and turn off on its own. But then, when I would put in a new batch of 100 octane, it would pop up.

JB4 stage 2 eliminated the CEL completely.

Also, I am completely satisfied with my Challenge HFC DP. Sounds great, and hauls ass. Just my 2 cents.
Appreciate 0
      07-04-2013, 01:51 AM   #151
JNLBC
Major
15

 
JNLBC's Avatar
 
Drives: AW M-Sport F30 335i
Join Date: May 2013
Location: Long Beach CA


Posts: 1,022
iTrader: (0)

For those who did not DIY... What's install (book) time on these? ...or what are shops charging to install these?
__________________
Appreciate 0
      07-04-2013, 08:47 AM   #152
mikew2069
Major
20

 
mikew2069's Avatar
 
Drives: F30 335i MSport
Join Date: Oct 2012
Location: Houston


Posts: 1,314
iTrader: (1)

Quote:
Originally Posted by JNLBC View Post
For those who did not DIY... What's install (book) time on these? ...or what are shops charging to install these?
2 hours at a good shop. 3 max
__________________
2013 F30 335i ///M-Sport
Forgestar/Challenge/BMS JB4
Wagner/Evo Race/M-Performance
Appreciate 0
      07-11-2013, 11:26 AM   #153
boomn29
Private
0

 
boomn29's Avatar
 
Drives: 2012 BMW 335i
Join Date: Nov 2012
Location: IL


Posts: 77
iTrader: (0)

Anyone using the Challenge HFC or Challenage exhaust + HFC with the new F30 BMW Power Pack that was released? I'm looking for an 'all-clear' on CEL's and whatnot.

My plan was to get the dealer upgrade; then the HFC. But with the dealer stuff on backorder; I'm going to do the exhaust while I wait on Germany I think. Anyone?
__________________
2012 F30 BMW 335i
8sp; Red; Sport, 20x9f; 20x10r (wearing 245/275's) Bronze Forgeline DE3C's, M-PPK, Challenge HFC-DP.
Winter Setup: 18x8 Black Enkei's with Blizzaks!
Appreciate 0
      08-14-2013, 02:33 PM   #154
GTM_Challenge
United_States
111

 
GTM_Challenge's Avatar
 
Drives: E92 M3,X5M,F30 335
Join Date: Jan 2010
Location: Chicago


Posts: 2,794
iTrader: (7)

Send a message via AIM to GTM_Challenge
Quote:
Originally Posted by boomn29 View Post
Anyone using the Challenge HFC or Challenage exhaust + HFC with the new F30 BMW Power Pack that was released? I'm looking for an 'all-clear' on CEL's and whatnot.

My plan was to get the dealer upgrade; then the HFC. But with the dealer stuff on backorder; I'm going to do the exhaust while I wait on Germany I think. Anyone?
I haven't had anyone use the HFC with the power pack yet. Most of our customers have been using the Burger tuner that I have talked to.
Appreciate 0
Closed Thread

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 03:35 AM.




f30post
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