As you may recall, my previous and very first trip to the track three weeks ago was less than spectacular. My best run was a piddly 12.98@104, barely faster than stock. After consulting with many different wise drag racers and chat and a day at the dyno to sort my car out, I'm finally tapped into the TRUE POWAAA!!!!
My best run today was incredible. I figured out that on a manual 135i, if you keep the RPM below 2k and slip the clutch a little during the launch, you get TERRIFIC 60' times. From there its all dependent on which map you're running, boost pressure, and octane.
I mixed 4 gallons of E85 (105 octane, $1.88/gal)) with one gallon of xylene (118 octane, $9.80/gal) and added that 5 gallon 108 octane mixture to my half tank of 95 octane (slightly high from a tolune additive for a dyno-day last week) to get 100 octane (ish). I'm torn between the effectiveness of toluene/xylene but expense and the cheapness but less combustive E85 so I figured a mixture. Either way it produced fantastic results and I ran Map 7 all day long(which on 100 octane produced 387whp, 395whtq at my dyno day last Saturday).
My first run was crap since I mis shifted third but my second run was fantastic. It was early in the evening, 7:01 pm and still a warm 70 degrees, before all the other street cars had start degrading the track, I was HOOKING UP LIKE ERROL FLYNN.
RT: .6895
60': 1.8981
330': 5.2671
1/8 ET: 8.0492
1/8 MPH: 89.06
1000' ET 10.4458
1000' MPH 101.74
1/4 ET: 12.3282
1/4 MPH: 112.16
According to Dragtimes.com, I have the 8th fastest documented BMW 135i.
[edit] My drag time is UP!
http://www.dragtimes.com/BMW--135i-Drag-Racing.html Look for "Citizen Z" under Drivers on the right hand column.
The whole rest of the day I was mid/upper 12s and experiencing pretty bad heat soak. The tiny little FMIC really needs to be upgraded in our 135is. Excluding a couple crap runs with mis shifts, here are the rest. Heat soak became the major issue initially and later as the evening cooled to around 55, traction became the issue, hence lousy ET, but higher traps. It was a great track but the street tires were really tearing it up and leaving a lot of tiny debris.
12.9240@108.30 - 7:48 pm
12.9962@111.83 - 8.30pm
12.8555@111.63 - 9:34pm
12.9103@114.16 - 10:24 pm
12.7448@114.42 - 10:32pm