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05-29-2011, 03:01 AM | #1 |
Supreme Allied Commander
4010
Rep 55,390
Posts
Drives: F80 M3
Join Date: Mar 2007
Location: Santa Barbara, AP, Brembo, GIAC, Koni, Ohlins, Performance Friction, www.hpautosport.com
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>>> HP Autowerks <<< Berk Technology N55 Downpipe
135i N55 Fitment.
•Ultra low backpressure 4″ downpipe •23HP gain over stock at the same boost level with no tuning devices •Straight shot design for zero restriction and high velocity •Largest possible tubing for quicker spool •Zero taper on flange at turbo for largest possible pressure differential •Largest downpipe on the market, uses more 4″ tube than the competition •100% Made in the USA •Optional Burger Tuning CAN tool for code reading, boost gauge, timing, shift light function, & CEL Code clearing for $100. We also offer ceramic coating for $100 more. Independent dyno tested by "FrankiE90" http://www.e90post.com/forums/showth...highlight=berk |
08-07-2011, 06:15 PM | #2 |
Private
4
Rep 50
Posts |
I just installed the berk downpipe this week. The turbo noise is exponentially louder with the windows down. With the windows up there is zero droning and stays fairly quiet. I have this paired up with the stock exhaust.
I can feel the increase in power and especially torque. Top end feels much better as well. I am aslo running the JB3 with 4.5 lbs of boost over stock. |
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08-08-2011, 09:20 PM | #5 |
Major General
665
Rep 8,801
Posts |
luv this downpipe - great fitment, quality and performance.
perfect match for the N55.
__________________
FrankiE90 AKA:.[The TANK] *CLICK THE SIG
E90s (been gone but not forgotten) • KW clubsports • • • • • • • • • • 18" BBS GT4 // Build E30 (pending) + E46 M3 Wagon ESTORIL Blue |
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