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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 > Surprising Track Results



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      04-03-2010, 03:41 PM   #1
Clap135
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Surprising Track Results

Car: 2009 135i MT. 29k miles, original plugs
Mods: DCI/Meth/v4(17-17.5psi)/93pump.
Tires: 265/35/18 Hankook evo v12s (street tires)
DA: 1115 ft (257 track elvation, 72 degrees outside according to drag time, temp gauge said 76, 45 percent humidity, 30.09 baro)
Timeslips: car 3394

From left to right:
1. missed 3rd
2. Blooper, bogged hard at the line, almost stalled it lol.
3. clean run
4. clean run, fastest run.

log of 12.3 run

Last edited by Clap135; 04-05-2010 at 11:26 AM.
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      04-03-2010, 04:41 PM   #2
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nice runs. Launch technique for street tires?
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      04-03-2010, 04:43 PM   #3
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Only DCI, meth and tune? Not all the stuff in your sig?
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      04-03-2010, 04:46 PM   #4
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Sig is what's in my garage. The car only has a dci meth tune power wise (charge pipe if you want to count that). It has wheels n suspension as well.

Last edited by Clap135; 04-03-2010 at 05:03 PM.
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      04-03-2010, 05:07 PM   #5
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Quote:
Originally Posted by Clap135 View Post
Sig is what's in my garage. The car only has a dci meth tune power wise (charge pipe if you want to count that). It has wheels n suspension as well.
Wow that's real fast. What were your UT and ignition correction settings? With drag radials, that's 11s easy.
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      04-03-2010, 05:55 PM   #6
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91 0 ign correction. Pretty much 100 percent meth out of a m10 nozzle. The track is not know for fast traps. The jb guys ran 112-113 on map 9 and race gas. I was surprised with my carm. I have logs if you are interested.
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      04-03-2010, 06:02 PM   #7
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Clap135 - you've got two 135s? How did you pull that one off?

Please advise!!

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      04-03-2010, 06:12 PM   #8
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I'm confused lol.I only have one.
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      04-03-2010, 06:45 PM   #9
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Nice runs mate!
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      04-03-2010, 06:54 PM   #10
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Damn that's faster than what I've done on race+meth with same mods. I wonder if the M10 nozzle running 100% meth makes that much of a difference than a M7 running 80/20? Hmm maybe time to get a bigger nozzle.
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      04-03-2010, 07:25 PM   #11
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I will post logs later tonight or tomorrow. My timing never hit above 10-11 so it def wasnt perfect. With some race gas 118s are def possible.
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      04-03-2010, 07:31 PM   #12
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Nice runs! Time for some drag radials like Shiv stated to see if yopu can get into the 11's.
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      04-03-2010, 07:34 PM   #13
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I guess I never really tried running that much boost either. did you see any timing drops through your runs?
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      04-03-2010, 07:54 PM   #14
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Launching tech: I brought the rpms up to 2.7kish and slipped the clutch. Basically what i do from a stop light, just higher rpm. Thats the best I can explain it.

As far as timing, for some reason it was almost always lower in 3rd. 3rd was 7-8 midrange 10-11 up top. 4th never went below 10 or higher then 12.

I tired 100 ut and i ended up hitting 2-3 degrees in 3rd with a shitty looking timing curve. So i back off.

Oh first gear tq was set to 80, 100 resulted in too much spin. 50 resulted in not enough spin. 80 felt perfect.
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      04-03-2010, 08:41 PM   #15
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Quote:
Originally Posted by Clap135 View Post
Launching tech: I brought the rpms up to 2.7kish and slipped the clutch. Basically what i do from a stop light, just higher rpm. Thats the best I can explain it.

As far as timing, for some reason it was almost always lower in 3rd. 3rd was 7-8 midrange 10-11 up top. 4th never went below 10 or higher then 12.

I tired 100 ut and i ended up hitting 2-3 degrees in 3rd with a shitty looking timing curve. So i back off.

Oh first gear tq was set to 80, 100 resulted in too much spin. 50 resulted in not enough spin. 80 felt perfect.
does that mean that the timing curve was always smooth up to shift or did it have any drop outs? also, what rpm are you shifting at. I'm just curious because I would see drop outs when running less boost than you on 93+meth with a M7 nozzle. I'd love to trap your speeds on pump+meth. If I PM you with my email, can you send me your logs?
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      04-03-2010, 08:45 PM   #16
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Quote:
Originally Posted by GeorgiaTech335coupe View Post
does that mean that the timing curve was always smooth up to shift or did it have any drop outs? also, what rpm are you shifting at. I'm just curious because I would see drop outs when running less boost than you on 93+meth with a M7 nozzle. I'd love to trap your speeds on pump+meth. If I PM you with my email, can you send me your logs?
Timing looked smooth however it varied (number wise) as I played with the boost. I will post a couple graphs in a the first post as soon as I charge my lap top lol

What were your traps on pump/meth.
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      04-03-2010, 08:54 PM   #17
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Quote:
Originally Posted by Clap135 View Post
Timing looked smooth however it varied (number wise) as I played with the boost. I will post a couple graphs in a the first post as soon as I charge my lap top lol

What were your traps on pump/meth.
Pump+meth with DCI, I was only trapping ~112.5 but that was only on 15lbs of boost. I didn't go up any higher in boost because I was seeing some timing drops and didn't think it would yield any more mph. I did 116.1 on 98 octane + meth at about 16.5+ psi.
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      04-03-2010, 09:37 PM   #18
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Quote:
Originally Posted by Clap135 View Post
Launching tech: I brought the rpms up to 2.7kish and slipped the clutch. Basically what i do from a stop light, just higher rpm. Thats the best I can explain it.
That is exactly how I launch, except I leave 1st gear at 100%.
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      04-05-2010, 11:26 AM   #19
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update first post with a log. Shiv any comments?
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      04-05-2010, 01:37 PM   #20
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Quote:
Originally Posted by Clap135 View Post
update first post with a log. Shiv any comments?
Actually, the logs look really good. There is a ignition retard even at beginning of the shift in 3rd gear which is almost normal if you shift really fast-- which you are doing judging by the mid-shift boost staying high. We'll be adding a shift event triggered ignition retard (with gradual decay) to prevent this in the very near future which should help a bit. Maybe we can get those traps to increase by another 0.5mph or so with it.

Good work... 11-12mph higher traps (over stock) with tune, dci and fuel aint bad

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      04-05-2010, 01:43 PM   #21
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Quote:
Originally Posted by shiv@vishnu View Post
Actually, the logs look really good. There is a ignition retard even at beginning of the shift in 3rd gear which is almost normal if you shift really fast-- which you are doing judging by the mid-shift boost staying high. We'll be adding a shift event triggered ignition retard (with gradual decay) to prevent this in the very near future which should help a bit. Maybe we can get those traps to increase by another 0.5mph or so with it.

Good work... 11-12mph higher traps (over stock) with tune, dci and fuel aint bad

Shiv
no fuel sir, just straight 100 percent meth out of a m10 nozzle. Still curious to how others are trapping over 120. lol

I find the entire 3rd gear wierd. I feel like i shift the 3-4 faster then the 2-3, but the 2-3 shows lower overall ignition. One would think that a 3-4 shift would generate more load/heat and drop more ignition.
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      04-05-2010, 01:45 PM   #22
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Quote:
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no fuel sir, just straight 100 percent meth out of a m10 nozzle. Still curious to how others are trapping over 120. lol


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