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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 > Horrible Time Slips



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      10-28-2013, 09:55 AM   #1
xboxgod
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Horrible Time Slips

I sent my JBD in to be tested as I have horrible 1/4 and 1/8 mile times with it installed. Not sure if it was bad or what, but Terry said "I noticed it had an older chip so I updated that. Tests out OK now. We'll get it back out today". This was Friday. So I am hoping my JBD wasn't functioning properly.

Notice that even with a 2.0 60', I still ran a 14.x @ under 100mph. Am I the only one that sees a problem here?

These are the slips from the 1/8 mile track on October 10th. 70 degrees. JBD @ 100%






These are the slips from the 1/4 mile track on August 31st. 88 degrees. JBD @ 100%



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      10-28-2013, 10:35 AM   #2
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Hey bro with those reaction times you gotta quit sleeping at the wheel. :P
I got the flash and those are about the times i get in the 1/8. I did break 9 sec twice... ill scan in that on slip that i went 8.82
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      10-28-2013, 10:39 AM   #3
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Quote:
Originally Posted by joe_planet View Post
Hey bro with those reaction times you gotta quit sleeping at the wheel. :P
I got the flash and those are about the times i get in the 1/8. I did break 9 sec twice... ill scan in that on slip that i went 8.82
I got some. 8.8 slips from March I believe. I just think these times aren't great for a tuned 335d. If it was just the launch, the mph should be up there still.

P.S. - The last yellow time slip is what happens when you hit limp mode halfway down the 1/8th...haha
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      10-28-2013, 06:18 PM   #4
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8.8 and ~82 mph on the 1/8 is ok, but 100 mph on the 1/4 is too low.
I have always 104-105 mph on the 1/4.
My worst time was 13.65 104 (88f) and my best was 13.11 @ 105 (66f)
My time are all between that and the temp dont have a big effect on my time with this car... Very consistant run after run .
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      10-28-2013, 07:59 PM   #5
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Quote:
Originally Posted by hrc630 View Post
8.8 and ~82 mph on the 1/8 is ok, but 100 mph on the 1/4 is too low.
I have always 104-105 mph on the 1/4.
My worst time was 13.65 104 (88f) and my best was 13.11 @ 105 (66f)
My time are all between that and the temp dont have a big effect on my time with this car... Very consistant run after run .
Stock? JBD?
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      10-29-2013, 07:58 PM   #6
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Stock? JBD?
JBD @ 100%
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      10-29-2013, 07:59 PM   #7
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JBD @ 100%
I just got mine back from Terry today. I hope it's closer to your times now.
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      11-02-2013, 01:23 PM   #8
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Did you notice a difference? I was only trapping 100mph in the 1/4mi with 100% JBD. I bought mine back in August of 2012.
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      11-04-2013, 10:57 PM   #9
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Originally Posted by MonkUSMC View Post
Did you notice a difference? I was only trapping 100mph in the 1/4mi with 100% JBD. I bought mine back in August of 2012.
I think it's actually slower than it was. I now tie with a friend who I used to beat pretty good. It's a stock 2003 M3 convertible. So heavy with 330HP.
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      11-05-2013, 12:43 AM   #10
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What diagnostic tools do you have available? If you could get some datalogs to use to compare that would be useful.
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      11-05-2013, 03:37 AM   #11
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Did any of you start having these problems after the EGR recall? Also, it seems our engines have varying performance depending on the DPF restriction. See my other post below:

http://www.e90post.com/forums/showpo...0&postcount=42

Also realize heat soak, warmer temps seem to kill performance. For best results you want to be running below 65F or so ambient temps.
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