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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N57 / M57 Turbo Diesel Discussions - 335d > 12.6 @ 109.7mph 1/4 mile



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      10-20-2012, 03:53 PM   #1
TDIwyse
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12.6 @ 109.7mph 1/4 mile

For those interested in such things:

http://www.bimmerfest.com/forums/sho...9&postcount=33
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      10-20-2012, 08:13 PM   #2
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Wow
Running a tune with JBD and meth and a IC !!!
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      10-21-2012, 05:43 AM   #3
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Wow
Running a tune with JBD and meth and a IC !!!
Well, that car has an Evolve remap, stacked with a customized JBD that progressively adds pwr based on rpm, and H2O/methanol injection at ~650 ml/min (based on AEM flow gauge data) at max boost. But the IC is stock. The H2O injection pulls intake temps down below ambient temps even on hot summer days on multiple pulls based on Bavarian Technic logged data.

The progressive JBD mod is key to keeping torque levels below the rated capacity of the transmission. It's only adding in pwr after the remap torque curve is starting to fall off. It's below the stock "0" setting until ~2500rpm and peaks at ~90-95% at 4400rpm. Makes for a nice, broad torque curve. It's also nice because the rail pressure distortion is at near stock levels during the rpm's where the ECU's injector calibration adaptation routine occurs.

The remap also increases boost for better utilization of the extra fuel (less soot formation and loading of the DPF), and the H2O injection reduces peak cylinder pressures and NoX formation, as well as further reduces soot formation (based on published papers).

It's been a good combo over the last several months which gives good performance and efficiency with little fuss. And it doesn't use much H20/methanol (fill the washer fluid resevoir about once every 1-2 months). Largely because it doesn't use much boost unless you get on it, and then you're speeding before you know it . . .
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      10-21-2012, 05:50 AM   #4
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Forgot . . . the reason the JBD can be stacked with the Evolve remap is due to the remap not touching the rail pressure. This was verified with BT logged data before messing with the JBD.
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      10-21-2012, 07:56 AM   #5
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Quote:
Originally Posted by TDIwyse
Forgot . . . the reason the JBD can be stacked with the Evolve remap is due to the remap not touching the rail pressure. This was verified with BT logged data before messing with the JBD.
How did you modify the JBD ?
How is this possible ?
I want to do it too! Show me what they or you did please.
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      10-21-2012, 08:01 AM   #6
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As for the tranny, I think people underestimate this ZF tranny!
It's tested and maxed out at 546 ft TQ !
That means its fairly safe for huge amount of torque. 335i ZF are rated much less than that and people put 450-500 TQ on theirs without any issues! Look at 335i MRC, they have almost 550 TQ at theirs and its no diesel!
I believe our tranny can support up to 650 TQ
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      10-21-2012, 08:02 AM   #7
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Quote:
Originally Posted by 335dM
As for the tranny, I think people underestimate this ZF tranny!
It's tested and maxed out at 546 ft TQ !
That means its fairly safe for huge amount of torque. 335i ZF are rated much less than that and people put 450-500 TQ on theirs without any issues! Look at 335i MRC, they have almost 550 TQ at theirs and its no diesel!
I believe our tranny can support up to 650 TQ
As long as you don't brake boost all the time
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      10-21-2012, 08:04 AM   #8
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That means with LSD and IC, you could go low 12!!
Wow
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      10-21-2012, 09:22 AM   #9
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Sweet mods brother. I'm glad your experimenting, and achieving fantastic results!
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      10-21-2012, 10:49 AM   #10
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Quote:
Originally Posted by 335dM View Post
How did you modify the JBD ?
How is this possible ?
I want to do it too! Show me what they or you did please.
http://www.bimmerfest.com/forums/sho...d.php?t=598240

It gets more interesting starting on the 2nd page as far as power mods. Lots of data and descriptions of what was done.
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      10-21-2012, 10:51 AM   #11
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Quote:
Originally Posted by 335dM View Post
As for the tranny, I think people underestimate this ZF tranny!
It's tested and maxed out at 546 ft TQ !
That means its fairly safe for huge amount of torque. 335i ZF are rated much less than that and people put 450-500 TQ on theirs without any issues! Look at 335i MRC, they have almost 550 TQ at theirs and its no diesel!
I believe our tranny can support up to 650 TQ
This guy doesn't want to be the person to find the "limit" . . .
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      10-21-2012, 10:55 AM   #12
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Quote:
Originally Posted by corbin View Post
Sweet mods brother. I'm glad your experimenting, and achieving fantastic results!
Thanks. Lots of data was taken and analyzed and shared with the 335d community in this process to keep things in "safe" zones and for the benefit of the D Brethren.
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      10-21-2012, 03:18 PM   #13
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is there a simple rpm vs torque chart from a dyno? with and without JBD[modded] on top of the tune...I know, I know, I'm asking for expensive data
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      10-22-2012, 08:26 AM   #14
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WOW amigo Felicidades you baby can RUNNNN!!!!
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      10-22-2012, 09:30 PM   #15
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TDI, where in the Midwest are you?
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      10-23-2012, 07:11 AM   #16
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naamanf - About 400 mls ~NE of your location (unless you're in Iraq now, in which case its a lot farther).

dubulup - just GTech dyno data.

Puerto Rican - thanks

Question regarding tire size from a dragsrip newbie for those more experienced:

Used 245/45R17 Hoosiers which have a 26.2 in diameter. This is significantly larger than stock wheel size and pushes the 4th-5th shift up to ~111mph. Thought this would be high enough that the car wouldn't waste time shifting into 5th during the pull, and more than make up for the slower acceleration at the beginning from the larger tires. However, looking at the recording of the pull (used the Track Recorder option the Android Torque app, and overlaid rpm data on the display) it shows the car was going a bit faster than anticipated and did the 4th-5th shift just before crossing the finish line. So the car was just getting into 5th gear as it went through the trap and finish line.

Would it be better to move to a lower diameter tire and have the 4-5 shift occur before the trap, so the car isn't coasting through the line, and also get better starting acceleration? Or is the larger diameter tire a better option?
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      10-23-2012, 10:18 AM   #17
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TDI, I linked your post/question over to the racing subforum, so hopefully you'll get some feedback from the drag strip guys.
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      10-23-2012, 11:44 AM   #18
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Thanks
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      10-24-2012, 06:04 AM   #19
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amigo now you need and IC, I can imagine that you might be able to shave off a second on the next run.
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      10-29-2012, 03:13 AM   #20
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Quote:
Originally Posted by TDIwyse
Quote:
Originally Posted by 335dM View Post
As for the tranny, I think people underestimate this ZF tranny!
It's tested and maxed out at 546 ft TQ !
That means its fairly safe for huge amount of torque. 335i ZF are rated much less than that and people put 450-500 TQ on theirs without any issues! Look at 335i MRC, they have almost 550 TQ at theirs and its no diesel!
I believe our tranny can support up to 650 TQ
This guy doesn't want to be the person to find the "limit" . . .
ZF tells me the 'limit' is 700Nm. I know that there is 'overhead' but I'm not going there. 12 sec 1/4 mi times are awesome but not for me if the engine mods push over 510 lb•ft. You do what you like to yours, I intend to keep mine for a while and a blown trans isn't worth 12 sec 1/4 miles.
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      11-07-2012, 03:01 PM   #21
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hi TDI, please tell me some info about the Water/meth kit! have you got some picture of your installation ?
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      11-07-2012, 07:16 PM   #22
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Why not just do propane? I have no clue but thinking that's easier and more gains.
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