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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Cobb stage 2



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      05-19-2013, 12:07 PM   #1
Maxspeed
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Cobb stage 2

My mods are: RPI scoops, drop-In filter, AR catless downpipes, HPF gen 2 exhaust, and of course the Cobb accessport.

I just put on the downpipes two days ago, and wow the sound is amazing and super loud which I love. And it pulls pretty nicely too.

I did the timer on my AP last night and my best was a 4.2 0-60 and 12.609 in the quarter mile. I'm AT by the way. 2nd gear launch.
I'm on pretty bald 255 PSS's in the rear.
When I try to launch from M2 and I step all the way down past the button, it puts me in first gear. So I have to step all the way down except for the button as fast as I can because I'm on a linear throttle map.
I'm not sure how accurate the cobb timer is, but any suggestions on how to improve my 60' time, without brake boosting? I just spin when I do that. I'd like to get like a 12.4 with these mods if that's possible.
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      05-19-2013, 12:08 PM   #2
Maxspeed
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One more thing, any idea how much
Hp I have on 91 octane, with these mods, on the cobb stage 2 sport map?
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      05-19-2013, 12:17 PM   #3
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Just practice your launch. The quickest way to launch is by brake boosting at around 2,500 RPMs. Your tires certainly aren't helping. you are probably in the 340-360 hp range with your mods.
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      05-19-2013, 08:34 PM   #4
SalM
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Tires are definitely going to play the biggest roll in getting better times.
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      05-20-2013, 09:30 PM   #5
Maxspeed
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340-360 at the wheels or crank? Wheels I'm hoping. Because I'm basically FBO without the intercooler. And aren't tune only +e85 cars without any other parts like 400whp?
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      05-20-2013, 10:11 PM   #6
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Quote:
Originally Posted by Maxspeed View Post
340-360 at the wheels or crank? Wheels I'm hoping. Because I'm basically FBO without the intercooler. And aren't tune only +e85 cars without any other parts like 400whp?
Not sure about tune only+E30/40 (stock fueling i'm assuming)=400whp. But 340-360 at the wheels sounds about right for Stg2 aggressive, depending on dyno of course.
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      05-21-2013, 08:37 AM   #7
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hey do any of you guys know why the cobb ap wont time if you get wheel spin? im on e30 map with 6mt and everytime i hit about 3.5k rpms i get a slight wheel spin and the whole thing is not recorded

but when i take of slow and dont have wheel spin it records but my time ends up being 6.5 seconds 0-60 lol.
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      05-21-2013, 09:05 AM   #8
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My 08 135i put down 339 on Stage 2 Agressive on Cobb's Mustang Dyno. Stage 2 is a very small bump in power over Stage 1.
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