Originally Posted by stressdoc
BMW Performance: OEM. Warranty, dealer network, etc. High cost but includes extensive cooling hardware. About $1500-2000 ($1795 MSRP for MSD81). +25-35 hp
ESS: High tech Euro firm breaking into USA market. Four stages. About $600-800 (MSRP 895-1095). Limited dealer network. +40-90 hp
Just two minor corrections, if you don't mind:
- BMW Performance flash only gives you +20hp (crank, not whp)
- ESS is 749$ for all stages (at least for members of this forum)
I could add quite a number of flashes from the European market where they are more popular, but as I don't think they're widely available in the US I'll pass on that for now.