R53 Mini Cooper S TVS900 Trackday Bedford GT 21/2/22

R53 Mini Cooper S. Opentrack Trackday
Bit of a mixed bag of weather and track traffic, still an awesome day with the guys again.
Both Minis running TVS900, Link ECU, BVH etc. Both tuned by Thom at 1320mini.
Although one of us have turned their mini into a plastic tonka toy 😜
#silverslug

[@TheAdamRawks]

Needs a smaller pulley to get that supercharger working harder.

[@minimanadam]

Lol sounds like its working well to me.. I got a full build r53 BUT it's got a sprintex sc and lol I got a 2% crank and 60mm sc pulley . It's running 21lb of boost THROUGH a trp2 head n ectect

[@jaymec5137]

Any issues with belt slip on track? Are you on the 6 or 8 rib pulley? If you ever have time, please makea vid on your build details. Thanks!

[@johnr53john]

Funnily enough I’ve been faffing about a lot with the belt slip issue. I was on the RMW 53mm pulley and have the RMW tensioner but still got belt slip on track (daily road was ok). I messed about with a few belt sizes and found some improvement. (0 ATI crank pulley fitted, AC delete pulley). 6 rib belt. Recently gone to a 55mm harrop pulley that had the griptec machining done to it. Seem to be a big improvement - initial ecu logs showed max MGP to be with 0.5psi of each other but with no apparent belt slip. IATs where massively reduced to going from 53 to 55. I knew they would be lower but wasn’t expecting quite the reduction (I do run a GRS front mount).

[@benbirch2393]

​@johnjohnaldridge how have you found the fmic? Would you do it in an m45 or not? Thanks!