Quote:
Originally Posted by 5w20
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.
|
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. |
Pretty sure i was having the same issues with the sport line bumper. IATs seem 10x better after changing it out.
Unfortunately, i had a very disappointing first day at the strip. Sucks because the weather was great. Got two runs in and spun the entire first 60 ft or so on both. Also, didn't preload on either run... launched at 600 rpm from a dead stop lol.
15' 335 RWD
A/S 3 +225/255 19" 36psi front/38psi rear (1st run) 32/28psi (2nd run)
Full Weight (3/4 full tank)
55-60 degrees all day
FBO Custom Cary tune 93 Oct (stock turbo)
HPFP
LSD
WMI (Not tuned for wmi)
MP LSD
Car #0376