F30 335 - Exhaust and Downpipe - Page 4 - BMW 3-Series Forum (F30 / F32)

GTM_Challenge · 09-05-2012, 12:18 PM

Challenge F30 335 Dyno Results for our HFC Downpipe combined with our Sports Catback Exhaust. We finally had a chance to get our F30 335 on the dyno again Friday and saw some great results even with the stock ECU. The car put down peak TQ gains of 30 ft lbs. with a solid 20-25 ft lbs. gain across majority of the powerband. Horsepower gains were 20-23hp peak and between 12-20 hp gains across most of the powerband. This means great usable power and gains at every RPM.

itsbrokeagain · 09-05-2012, 11:27 PM

Awesome numbers!!!

parky1215 · 09-06-2012, 02:50 PM

it sounds fantastic. love you guys for putting effort developing things for F30.

i hope drone is minimum at cruising speed.
is your shop car AT or manual?

GTM_Challenge · 09-06-2012, 03:08 PM

Quote:

Originally Posted by parky1215

it sounds fantastic. love you guys for putting effort developing things for F30.

i hope drone is minimum at cruising speed.
is your shop car AT or manual?

Thanks, Depends on the RPM but, there is very very minimal drone at highway cruising speeds with the downpipe. The car we have here is manual.

With the stock cat, there was no hint of drone at all.

m3 guy · 09-06-2012, 03:59 PM

Adding the hfc downpipe to my order!

Ermagerd · 09-09-2012, 06:54 AM

That sounds sooo sick with the HFC!

GTM, will this work with the ix also?

GTM_Challenge · 09-10-2012, 11:59 AM

Quote:

Originally Posted by Ermagerd

That sounds sooo sick with the HFC!

GTM, will this work with the ix also?

We have not yet got an ix 335 model here locally to test fit it, but hope to soon.

J-boogey · 10-02-2012, 07:58 PM

any updates? can you take a picture of how the exhaust looks under the car?

GTM_Challenge · 10-09-2012, 10:34 AM

Quote:

Originally Posted by J-boogey

any updates? can you take a picture of how the exhaust looks under the car?

Once we finish some production units we can share some photos of the design. Its full 3inch with no crush sections or tapers. We us a reinforced 3in flex section up front as well in the same location as stock.

ocso1606 · 10-10-2012, 08:50 PM

I love the sound of this exhaust!

pbittner · 10-29-2012, 06:51 AM

The exhaust sounds superb, plus I think it looks nicer than the M-Performance exhaust even though you won't ever see it except for the tips, hah.

F30_Performance · 11-06-2012, 09:17 AM

is the downpipe now avalaible with highflow cat? where can i order it?

GTM_Challenge · 11-06-2012, 10:54 AM

Quote:

Originally Posted by F30_Performance

is the downpipe now avalaible with highflow cat? where can i order it?

We should have a better idea today or tomorrow as to when they will be available. It shouldn't be much longer.

mikew2069 · 11-06-2012, 11:17 AM

Quote:

Originally Posted by GTM_Challenge

We should have a better idea today or tomorrow as to when they will be available. It shouldn't be much longer.

Any progress on the quad tip exhaust w/ diffuser?... I'd also like to hear a review on the interior sound/noise with the sport exhuast and DP w/ HFC.

F30_Performance · 11-06-2012, 02:24 PM

What type of cat is in the dp? 100 or 200 cell?

GTM_Challenge · 11-06-2012, 07:13 PM

Quote:

Originally Posted by F30_Performance

What type of cat is in the dp? 100 or 200 cell?

It's a 200 cell.

GTM_Challenge · 11-06-2012, 07:14 PM

Quote:

Originally Posted by mikew2069

Any progress on the quad tip exhaust w/ diffuser?... I'd also like to hear a review on the interior sound/noise with the sport exhuast and DP w/ HFC.

For the quad tip setup, expect it to be at least 2-3 months out. We have to finalize the dual tip exhaust and diffuser first.

F30_Performance · 11-08-2012, 07:31 AM

news???

i will this downpipe on my car!!!!!!

RollingLower42 · 11-11-2012, 02:22 AM

Just curious if putting a exhaust + downpipe increases your chances of getting rolled / pulled over? Is there any sort of ticket you can get if you mod your car with both? Or if it becomes noticeably louder is that a offense?

Just curious, I am pretty sure eventually I am going to get some sort of aftermarket exhaust and possibly down pipe as well..What about warranty too?

Zyklonic · 11-12-2012, 06:00 AM

Depends on your local and state laws

GTM_Challenge · 11-12-2012, 11:39 AM

Quote:

Originally Posted by RollingHard28

Just curious if putting a exhaust + downpipe increases your chances of getting rolled / pulled over? Is there any sort of ticket you can get if you mod your car with both? Or if it becomes noticeably louder is that a offense?

Just curious, I am pretty sure eventually I am going to get some sort of aftermarket exhaust and possibly down pipe as well..What about warranty too?

Quote:

Originally Posted by Zyklonic

Depends on your local and state laws

The exhaust is very dependent of your local laws, law enforcement, etc. The downpipes by themselves would most likely not draw much attention from the authorities.

Some states allow modification of the stock catalytic converter system, others do not. We don't have any issues with our shop cars here in Chicago (knock on wood).

mikew2069 · 11-12-2012, 11:41 AM

What kind of noise can I expect inside the car with the HFC DP and sport exhaust? I really want to wait for rear diffuser/quad outlet but I'm impatient so who knows.

09-05-2012, 12:18 PM	#67
GTM_Challenge Drives: E92 M3,X5M,F30 335 Join Date: Jan 2010 Location: Chicago Posts: 2,172 iTrader: (6)	Challenge F30 335 Dyno Results for our HFC Downpipe combined with our Sports Catback Exhaust. We finally had a chance to get our F30 335 on the dyno again Friday and saw some great results even with the stock ECU. The car put down peak TQ gains of 30 ft lbs. with a solid 20-25 ft lbs. gain across majority of the powerband. Horsepower gains were 20-23hp peak and between 12-20 hp gains across most of the powerband. This means great usable power and gains at every RPM. Last edited by GTM_Challenge; 09-05-2012 at 12:40 PM.

09-05-2012, 11:27 PM	#68
itsbrokeagain Drives: E28 535, 1996 Dodge Ram Diesel Join Date: Mar 2007 Location: Valley Stream, NY Posts: 15,742 iTrader: (7)	Awesome numbers!!! __________________ AUTOCouture Motoring: Handling reflector installs to turbo upgrades and superchargers, and everything in between 15-01 Pollitt Drive, Fairlawn NJ 201-666-3500 <-Official Vehicle Transport for AUTOCouture

09-06-2012, 02:50 PM	#69
parky1215 First Lieutenant Drives: 2011 335is Join Date: Nov 2010 Location: Claremont, CA Posts: 381 iTrader: (5)	it sounds fantastic. love you guys for putting effort developing things for F30. i hope drone is minimum at cruising speed. is your shop car AT or manual? __________________ 2011 AW 335is DCT GIAC Custom Tune : Cyba Air Scoop : BMS DCI : ER FMIC Full Kit with Tial BOV : AR Catted DP : Modified 335is Exhaust : M3 Front Sway Bar : HD Swaybar Endlink : Eibach Pro Spring/Shock : Koni Yellow : R1.Concepts Premium Rotors : Porterfield R4S Pads : 10/12mm spacers : BMW CF Spoiler

09-06-2012, 03:59 PM	#71
m3 guy Captain Drives: 2012 X5M Join Date: Apr 2012 Location: Hawaii Posts: 758 iTrader: (2)	Adding the hfc downpipe to my order! __________________ 2001 E46 M3 Oxford Green Metallic II-Cinnamon SOLD 2013 F30 335 Estoril Blue-Black SOLD 2012 E70 X5M Monte Carlo Blue-Silverstone Journal

09-09-2012, 06:54 AM	#72
Ermagerd Private Drives: a huffy Join Date: Aug 2012 Location: Va Beach Posts: 67 iTrader: (0)	That sounds sooo sick with the HFC! GTM, will this work with the ix also? Last edited by Ermagerd; 09-09-2012 at 06:59 AM.

10-02-2012, 07:58 PM	#74
J-boogey Major Drives: F30 335xi Msport Join Date: Sep 2009 Location: Oceanside, New York Posts: 1,248 iTrader: (1)	any updates? can you take a picture of how the exhaust looks under the car? __________________ 2013 F30 335i xdrive \| Estoril Blue \| Black Dakota Leather \| Aluminum Hexagon trim \| M-Sport \| Cold weather \| DHP \| Premium package \| Tech package \| Harmon Kardon \| PDC \| Rearview Cam \| IND Painted reflectors \| BMW performance grills \| JB4 stage 2 \| ER downpipe

10-10-2012, 08:50 PM	#76
ocso1606 Lieutenant Drives: 2013 335i M Join Date: Aug 2012 Location: Syracuse,NY Posts: 502 iTrader: (0) Garage List 2007 BMW 525xi [0.00] 2010 Volvo [0.00] 2013 BMW 335i M-Sport [0.00]	I love the sound of this exhaust! __________________ 2013 335i M-Sport, Alpine White, Red Coral Leather, 6SP M/T, 403m 19" wheels, M- Suspension, CWP, M-Performance Exhaust, M-Performance Power Pack!

10-29-2012, 06:51 AM	#77
pbittner Registered Drives: '13 335i xDrive Join Date: Oct 2012 Location: Illinois Posts: 2 iTrader: (0)	The exhaust sounds superb, plus I think it looks nicer than the M-Performance exhaust even though you won't ever see it except for the tips, hah.

11-06-2012, 09:17 AM	#78
F30_Performance Enlisted Member Drives: F30 335i M Sport Join Date: Sep 2012 Location: Zürich, Switzerland Posts: 30 iTrader: (0)	is the downpipe now avalaible with highflow cat? where can i order it? __________________

11-06-2012, 02:24 PM	#81
F30_Performance Enlisted Member Drives: F30 335i M Sport Join Date: Sep 2012 Location: Zürich, Switzerland Posts: 30 iTrader: (0)	What type of cat is in the dp? 100 or 200 cell? __________________

11-08-2012, 07:31 AM	#84
F30_Performance Enlisted Member Drives: F30 335i M Sport Join Date: Sep 2012 Location: Zürich, Switzerland Posts: 30 iTrader: (0)	news??? i will this downpipe on my car!!!!!! __________________

11-11-2012, 02:22 AM	#85
RollingLower42 First Lieutenant Drives: 2012 BMW 335I Join Date: May 2012 Location: Los Angeles Posts: 330 iTrader: (0) Garage List 2012 BMW 335I F30 [0.00]	Just curious if putting a exhaust + downpipe increases your chances of getting rolled / pulled over? Is there any sort of ticket you can get if you mod your car with both? Or if it becomes noticeably louder is that a offense? Just curious, I am pretty sure eventually I am going to get some sort of aftermarket exhaust and possibly down pipe as well..What about warranty too?

11-12-2012, 06:00 AM	#86
Zyklonic New Member Drives: 335i Join Date: Jun 2012 Location: Virginia Posts: 29 iTrader: (0)	Depends on your local and state laws

11-12-2012, 11:41 AM	#88
mikew2069 Captain Drives: F30 335i MSport Join Date: Oct 2012 Location: Houston Posts: 656 iTrader: (1)	What kind of noise can I expect inside the car with the HFC DP and sport exhaust? I really want to wait for rear diffuser/quad outlet but I'm impatient so who knows.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search