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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > NA Engine (non-turbo) / Drivetrain / Exhaust Modifications > My N52 at the drag strip.



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      10-12-2014, 12:20 PM   #1
kobeballer96
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My N52 at the drag strip.

went to the strip on Friday and ran a 14.2 at 98mph.
Mods are
-Euro box
-disa stage 3 Intake manifold
-muffler delete with xpipe
-rear seat delete.
Currently no tune, no headers. Soon to come.
Car is fully loaded with sunroof and electric and heated seats.


Time slips

https://www.dropbox.com/s/i51x8x28as...un%20.jpg?dl=0

https://www.dropbox.com/s/p0k6s64cjy...C1AA1.jpg?dl=0
https://www.dropbox.com/s/b9nffslxh3...20run.jpg?dl=0

Videos








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      10-12-2014, 12:48 PM   #2
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Not bad against the 335's.
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      10-12-2014, 01:20 PM   #3
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Even though I suck (per your earlier post) I'll give you props to three fine passes; 14.2 at 98 MPH for an almost stock 128i is very impressive! Nice job and thanks for sharing!
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      10-12-2014, 01:32 PM   #4
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Quote:
Originally Posted by Tom Droze View Post
Even though I suck (per your earlier post) I'll give you props to three fine passes; 14.2 at 98 MPH for an almost stock 128i is very impressive! Nice job and thanks for sharing!
It was a joke man sorry I came off strong! Just keep trying at it. I'm trying to have the first 128i into the 13s possibly 12s with the next few plans I have for fun just to say I've done it. But thank you!
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      10-12-2014, 02:12 PM   #5
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It was a joke man sorry I came off strong! Just keep trying at it. I'm trying to have the first 128i into the 13s possibly 12s with the next few plans I have for fun just to say I've done it. But thank you!
Hey, I know it was in fun, so it's all good! I went to the drag strip to establish a baseline MPH before I do an ECU reflash, as I trust 1/4 mile MPH as an indicator of horsepower more than I trust a dyno, besides it's a Hell of a lot more fun.

I was able to locate my time slips from 2004 when I took my 2003.5 Infiniti G35 sedan with a six-speed manual and limited slip to the drag strip. This car was rated at 260 horsepower and the the 60 foot, ET, and MPH were virtually the same as what I did Friday night in my automatic e92 N51 328i (Dinan ram air, PE, charcoal delete).

I'm curious to know what the curb weight of my car is, so I'm going to have it weighed tomorrow.
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      10-12-2014, 02:32 PM   #6
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Wonder how you'd do with a tune.
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      10-12-2014, 02:51 PM   #7
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Quote:
Originally Posted by Tom Droze View Post
Hey, I know it was in fun, so it's all good! I went to the drag strip to establish a baseline MPH before I do an ECU reflash, as I trust 1/4 mile MPH as an indicator of horsepower more than I trust a dyno, besides it's a Hell of a lot more fun.

I was able to locate my time slips from 2004 when I took my 2003.5 Infiniti G35 sedan with a six-speed manual and limited slip to the drag strip. This car was rated at 260 horsepower and the the 60 foot, ET, and MPH were virtually the same as what I did Friday night in my automatic e92 N51 328i (Dinan ram air, PE, charcoal delete).

I'm curious to know what the curb weight of my car is, so I'm going to have it weighed tomorrow.
Your car has to be lighter (and have more agressive gearing) than mine in order to do what you did. My best was a 15.1/90.5mph when I was stock.
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      10-12-2014, 02:52 PM   #8
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Very good numbers
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      10-12-2014, 03:10 PM   #9
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Quote:
Originally Posted by TheAxiom View Post
Your car has to be lighter (and have more agressive gearing) than mine in order to do what you did. My best was a 15.1/90.5mph when I was stock.
15.365 at 92.73 MPH and I had one run at 93.00 MPH. With a N51, which has the three-stage intake, I'm wondering if the 3-S intake coupled with the Dinan ram air isn't making a difference once I'm above 60 MPH. The Dinan ram air without significant air flow (like on the dyno or at low speed) is really a non factor. Plus I have the air scoops.

Last edited by Tom Droze; 10-12-2014 at 03:20 PM.
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      10-12-2014, 03:25 PM   #10
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15.365 at 92.73 MPH and I had one run at 93.00 MPH. With a N51, which has the three-stage intake, I'm wondering if the 3-S intake coupled with the Dinan ram air isn't making a difference once I'm above 60 MPH. The Dinan ram air without significant air flow (like on the dyno) is really a non factor. Plus I have the air scoops.
They probably are at higher speeds - your numbers don't diviate from mine until the higher speeds I think I may have been lifting early, I don't know - but your numbers up to the 1/8mile are the same as mine

http://www.e90post.com/forums/showthread.php?t=926586

Run 2, bad launch
60' ---- 2.36
300 ---- 6.598
1/8 ---- 10.045
MPH ---- 71.22
1000 ---- 12.941
1/4 ---- 15.375
MPH ---- 90.68

Run 4, I was idling for a solid 10 minutes before hand
60' ---- 2.299
300 ---- 6.464
1/8 ---- 9.881
MPH ---- 71.6
1000 ---- 12.76
1/4 ---- 15.189
MPH ---- 90.12
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Last edited by TheAxiom; 10-12-2014 at 05:12 PM.
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      10-12-2014, 04:03 PM   #11
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I don't know but I let my car cool off after each pass. I stage it and pop the hood and let t cool off and just roll the car to the staging area with the engine off.
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      10-12-2014, 04:37 PM   #12
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I also turn all my lights off and idrive display and ac/air off. Idk I noticed alot of the serious guys had nothing powered on so I did the same even if it didn't make a difference from power being drawn.
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      10-12-2014, 04:44 PM   #13
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Quote:
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I also turn all my lights off and idrive display and ac/air off. Idk I noticed alot of the serious guys had nothing powered on so I did the same even if it didn't make a difference from power being drawn.
Every little bit helps. I had my climate control off but I had my lights on. I also had a half a tank of gas, next time I'll go with a 1/4 tank of gas.

Wheel and tire weight are important too by the way.
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      10-12-2014, 04:59 PM   #14
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Every little bit helps. I had my climate control off but I had my lights on. I also had a half a tank of gas, next time I'll go with a 1/4 tank of gas.

Wheel and tire weight are important too by the way.
Yup they sure are. I was running with half a tank. 93 pump with a sprinkle of 110. Maybe half a gal I got from a friend if that made a difference. My wheels are 17lbs each paired up with BFG rivals. They are a Autocross tire not really a drag tire lol
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      10-12-2014, 05:06 PM   #15
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Be careful with the higher octane fuel as it can slow you down unless you're tuned for it. The higher the octane rating, the higher the flashpoint and the slower the fuel burns. The moral of the story with octane is that you want just enough to prevent pre-ignition!
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      10-12-2014, 05:12 PM   #16
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I have 18-inch 397 wheels with run flats. It's my understanding these wheels weigh 26 pounds apiece. I'm certain these tires are heavy too!
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      10-12-2014, 05:17 PM   #17
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Apparently, my wheels alone are almost (if not over) 30lbs! Time to shed some weight from there...
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      10-12-2014, 05:21 PM   #18
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Be careful with the higher octane fuel as it can slow you down unless you're tuned for it. The higher the octane rating, the higher the flashpoint and the slower the fuel burns. The moral of the story with octane is that you want just enough to prevent pre-ignition!
Exactly the reason why I only put half a gallon. Not enough to make a difference but to bump up the 93 to maybe 95 if I'm lucky. Nothing too crazy. Now seeing AA will have headers soon I'm so excited to buy those! But I want to go with ESS tune because the of the super charger kit coming soon.
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      10-12-2014, 05:22 PM   #19
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wow judging by your speed of 98 and a time of 14.2 and my speed at 98 with a time of 14.65..just goes to show the effects of x drive.. and auto!
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      10-12-2014, 05:31 PM   #20
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wow judging by your speed of 98 and a time of 14.2 and my speed at 98 with a time of 14.65..just goes to show the effects of x drive.. and auto!
I would think x drive will help you get off the line faster resulting a faster 60 foot
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      10-12-2014, 05:34 PM   #21
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Exactly the reason why I only put half a gallon. Not enough to make a difference but to bump up the 93 to maybe 95 if I'm lucky. Nothing too crazy. Now seeing AA will have headers soon I'm so excited to buy those! But I want to go with ESS tune because the of the super charger kit coming soon.
ESS is local to me but I'm leaning toward the AA tune.
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      10-12-2014, 05:36 PM   #22
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Are you holding down the gas and brake at the same time before the tires want to break lose? I went out today on a empty lot and practice my 60 foot. I want to go back I'm sure I can break a 13.9 if I'm lucky the way my car is. At the track I was kind of almost dumping the clutch. Today I staged. Had the e brake up. Clutch a little less then halfway out and other foot on the throttle 1/4 down maybe to where I felt the car wanted to go forward but couldn't because of the brake then. I pretended the light hit the yellow part of the tree and dropped the ebrake and went full throttle slipping the clutch enough to where it wasn't going To hurt it and off the car went. Virtually no wheel spin and the car just launched like a auto would. I want to go back now haha.
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