[xboxgod]

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%

[joe_planet]

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

[xboxgod]

Originally Posted by joe_planet

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

[hrc630]

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 .

[xboxgod]

Originally Posted by hrc630

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?

[hrc630]

Originally Posted by xboxgod

Stock? JBD?

JBD @ 100%

[xboxgod]

Originally Posted by hrc630

JBD @ 100%

I just got mine back from Terry today. I hope it's closer to your times now.

[WreckerX5d]

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.

[xboxgod]

Originally Posted by MonkUSMC

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.

[Hoooper]

What diagnostic tools do you have available? If you could get some datalogs to use to compare that would be useful.

[hotrod182]

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.