Quote:
Originally Posted by 5w20
12.445 @ 111.25
Car: 2014 435i RWD 8AT EWG
Mods: BM3 stage 2 93oct tune, VRSF Catless DP, eBay Chargepipe, Amazon intercooler
Tires: 235/35R20 255/30R20 Michelin Pilot PS4
Track: HRP in Baytown, TX
Ambient Temp: 66F
Density Altitude: 588 ft
Going back tomorrow to hopefully get a better time. Changed rear tires to Michelin Pilot SS 265/30R20, OTS E30 tune, & BM3 transmission flash. I currently don't feel like these current tires grip as much as the previous tires. Zero wheel spin at the track with the PS4. Hopefully I can get an accurate weight on this car.
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I'll make this quick comparison with BM3 OTS tunes since I don't have the time to look up all the data at the moment.
Stg2 93 -- 12.4@111 (Michelin Pilot S4 255/30/20 -- zero wheel spin launching as hard as possible)
Stg2 E30 -- 12.3@114 (Michelin Pilot SS 265/30/20 -- some wheel spin)
Stg2+ E30 -- 12.0@116 (Michelin Pilot S4 265/30/20 -- zero wheel spin)
**added necessary fueling mods
I will add that raceweight is 3800lbs and I'm RWD. One note is that on the Stg2+ I tried the left lane and spun really bad launching as hard as possible, so i jumped over to the right lane and was about to get traction with easing into the throttle the first 15ft or so. I did not get an opportunity to launch at full throttle. Since I do not have the time slips on hand I will come back with weather conditions. I do believe my intercooler (on the smaller side) along with not having the M sport front bumper with the larger opening is hindering performance as my IATs do rise more than what I would like and timing is pulled.