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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 > 500whp? Almost there....



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      04-06-2009, 04:56 PM   #23
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Oh, and I look into my crystal ball and see a new transmission and clutch needed soon!
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      04-06-2009, 04:57 PM   #24
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Quote:
Originally Posted by shiv@vishnu View Post
the CF is 1.03%. I'd say the car would put down a considerably bigger number in reasonable weather. Even with a SAE correction.

Shiv
Happy to hear if the CF is 1.03%, but that seems too low STD? I did a quick hand calculation based on weather.com and it seems it should be 1.06 or 1.07% STD? Can you verify these values with what is captured on the dyno run files? Better select "display run conditions" and post chart that way. Full disclosure only helps you!

29.84 Baro
82 degrees F
67 RH
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      04-06-2009, 04:59 PM   #25
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Quote:
Originally Posted by 09AlpineTTSedan View Post
Hey Shiv, you're talking about pipe #8 and pipe # 13 being possible airflow restrictions?


Yep.. i've been suspicious of those two pipes for a long time. Frankly, I'm surprised they got us THIS far

Looks like we can't get to the rear inlet pipe since the 135 has less clearance against the firewall... hmmm.... So we are only going to pop off the front tube and see what it does on the dyno. If we see a bump in power, then we know we have to do something about the rear inlet.

Shiv
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      04-06-2009, 05:07 PM   #26
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Quote:
Originally Posted by runningman View Post
Happy to hear if the CF is 1.03%, but that seems too low STD? I did a quick hand calculation based on weather.com and it seems it should be 1.06 or 1.07% STD? Can you verify these values with what is captured on the dyno run files?

29.84 Baro
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Yeah... i think something is wrong with the dynojet weather station. Only shows 24% humidity. Should be closer to 70% based upon local weather reports. Maybe we already are at 500whp and we just didn't realize it

Shiv
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      04-06-2009, 05:11 PM   #27
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differences aside, that's pretty impressive numbers there Shiv.

well done
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      04-06-2009, 05:13 PM   #28
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2007 e90 335i  [8.00]
Very nice! Amazing numbers!
Has there been any concerns about the bottom end at all?
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      04-06-2009, 05:15 PM   #29
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ballpark w/ same mods on 93?

Also, this car has all cats in place?
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      04-06-2009, 05:17 PM   #30
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What are the AFRs sitting at?
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      04-06-2009, 05:20 PM   #31
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Quote:
Originally Posted by ar design View Post
What are the AFRs sitting at?
nevermind that manufacture some inlet pipes quickly and give them to shiv so he can make more power
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      04-06-2009, 05:21 PM   #32
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Whoa.
I think I found my next mod
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      04-06-2009, 05:33 PM   #33
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those are excellent numbers! very impressive
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      04-06-2009, 05:45 PM   #34
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love that powerband!
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      04-06-2009, 05:50 PM   #35
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Shiv,

This is phenomenal..Congrats! Have you logged the fuel injection duty cycle? I am not sure how it works in DI systems. In the 996 turbo world we log fuel injector duty cycle and find them to be 95% or higher with just k16 hybrids or a k24/18g turbos. Most of us upgrade to 60lb injectors to flow more fuel or a 5 bar Fuel pressure regulator.
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      04-06-2009, 05:53 PM   #36
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This also starts to answer what the limits of the engine are. Obviously way above 350 RWHP. Turn up the boost till it breaks and then back off 10 HP.
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      04-06-2009, 05:59 PM   #37
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300# of torque at 2k rpm & 400# at 2.5k rpm...that will be very drivable indeed (with a Quaife & humongous sticky rear tires).

The Xi folks are really going to love this...they'll be able to use all that power.
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      04-06-2009, 06:00 PM   #38
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With these kind of numbers - why do I visualize these turbos as a humongous beer belly with the 335 tranny/transfer case more like these suspenders?? Barely holding on for dear life BABY!!

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      04-06-2009, 06:04 PM   #39
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dude you are killing us...!
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      04-06-2009, 06:05 PM   #40
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Quote:
Originally Posted by shiv@vishnu View Post
I've extended my stay by one day. Just to make sure we can spend enough time on the pump gas map. Right now, Abid is under the car trying to address the possible inlet pipe restriction. Should be ready to dyno again within the hour.

Shiv
nice...i was just about to ask for dyno numbers for pump gas b.c meth and race as is a lot of fuel, so hopefully on pump gas itll still make a lot of power hopefully there will still be enough supply for fuel on pump...by the way how much boost can the turbos handle with meth/race gas
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      04-06-2009, 06:06 PM   #41
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Quote:
Originally Posted by Septro View Post
With these kind of numbers - why do I visualize these turbos as a humongous beer belly with the 335 tranny/transfer case more like these suspenders?? Barely holding on for dear life BABY!!

Attachment 256017


this guy looks like a my SA... standing in front of a funhouse mirror
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      04-06-2009, 06:35 PM   #42
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OK, im curious to know if the sound of the car changed. Good numbers BTW. But if that is with race gas and meth, How much are we at on pump? 440? Just curious.
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      04-06-2009, 06:40 PM   #43
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update: http://www.e90post.com/forums/showthread.php?t=248764
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      04-06-2009, 06:42 PM   #44
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Shiv,
Is there a reason why meth is being used with 104 octane? I was under the impression that a meth kit more or less gave made it so you wouldn't need higher octanes. I'm guessing i heard wrong?
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