I have been testing map 7 on my JB4. Unfortunately it's almost constantly raining around here, plus I have to drive 200 miles to get some proper 102 octane fuel that's affordable, so I don't have that many shots. I had to give up on a 3rd + 4th gear pull because of wheel spin, however I did manage a "4th gear only" 60-130 run. I have included the JB4 log, I was actually testing for ignition retard and a boost leak, but I ended up having to go to 5th and 6th gear to avoid wheel spin (and "contaminated" logs).
As you can see the slope was just 0.7%, and I even lost some boost along with the loss of traction because of the slight wheel spin at peak boost. I am confident I could easily get into the 9's in 4th gear alone with just a dry road, not to mention a little more slope.
In the spring or on a dry winters day, whichever comes first, I'm sure I'll get into the 8's on map 7. And this is still without meth. I think this baby is really going to rock when I'll be able to afford a set of RB's
Mods are same as in my 9.51 run, just map 7 in stead of map 2 on the JB4 and Aral 102 Ultimate fuel in stead of Shell V-power 99 (EU ratings)
E92 335i 2008 Space Grey 6MT | Quaife LSD | DEFIVfab N54 diff lockdown kit | RB turbos | COBB ProTuning E50 map from PTF | Walbro E85 455 LPH LPFP | NGK 5992 plugs | Wagner FMIC | Wagner 3" DP | Milltek catback exhaust | STETT CP | Forge DV | AFE Stage 2 DCI with scoops | BMS SLD | SPEC Stage 3+ clutch | SPEC Steel Single Mass Flywheel | BMS CDV