If your target is 700whp or less, the Pure 850 is the smart choice.
The Pure 900 makes sense if:
You plan to go PI soon
You're aiming for 750–800+whp long-term
Add seamless flex fuel capability to your BMW or Toyota Supra with the bootmod3 Basic Flex Fuel Kit — a highly requested, economical alternative to the High Flow Flex Fuel Kit. Designed for GEN1 and GEN2 B48/B58 engines, S58 engines, and A90/A91 Supra models, this engine bay-mounted kit delivers...