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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > N55 Turbo Engine / Drivetrain / Exhaust Modifications > F30 335 - Exhaust and Downpipe
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      11-12-2012, 12:05 PM   #89
GTM_Challenge
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Quote:
Originally Posted by mikew2069 View Post
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.
At wide open throttle its going to have more noise of course and any drone is pretty close to stock levels at lower RPM at higher engine load or cruising speeds. We daily drove this car for a few months to test it in all conditions including hwy driving.
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      11-12-2012, 05:10 PM   #90
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Dyno with the cat less???

Quote:
Originally Posted by GTM_Challenge View Post
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.


Hello,

Do you have a dyno for the catless downpipes with the exhaust??
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      11-15-2012, 08:56 AM   #91
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Is this downpipe for sale yet, and what are the prices?
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      11-15-2012, 10:09 AM   #92
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Quote:
Originally Posted by Charlie_Hustle View Post
Is this downpipe for sale yet, and what are the prices?
I tried PMing you, but you have messaging turned off. Please send me an email at austin@gtmotoring.com

Thanks.
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      11-20-2012, 06:42 AM   #93
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Any update on the availability?? Tks!!!
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      11-22-2012, 12:24 PM   #94
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Interested in availability, price, and compatible w xdrive?
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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 | BMS Intake | H&R sport springs
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