[AlpsRider]

If you guys are running stock MPSS tires CS+ is perfect. If you upgrade to Cup2 240s or other stickier tires then they can handle the torque of Stage 1 (ACN91 for west coast crappy gas).

[jpsheets]

Originally Posted by SeanWRT

@Robin_NL let me explain S55 variants' tune state.

M2C - same as base until 5k where it starts to taper off by 20-30whp
M3/4 base - standard
M3/4 ZCP - same as base until 5k, from which it holds a bit more boost to top end by about 20whp
M3/4 CS - significantly more boost at middle range till 5k5 than zcp. Top end boost is same but cs has more timing. However, you won't see more power if octane isn't there.
M4 GTS - slightly more middle range than zcp but more boost top end. Slightly more peak power.
BM3 CS+ - same as oem cs but with more boost top end.
BM3 CSL - CS+ middle range and GTS top end.
BM3 STG1 - significantly more boost (22-23psi) throughout rev range.
BM3 STG2 - significantly more boost (23+psi) full range

All of above maps are flashable with BM3.

Personally oem cs isn't bad but I'd go with BM3 CS+. On that map revving to redline is worth it.

Great info. Thank you!