Fuel-It S55 BMW (CPI) Charge Pipe Injection Kit 428i (F33) an optional 2STEP rev limiter

an optional 2STEP rev limiter & no lift shifting for manual transmission cars

All ARM Motorsports products come with a Lifetime Warranty

• Allows more air to get to the turbos

Bavarian Technic Diagnostic cable works with Engine

*These kits are available for off-road use only

Fuel-It S55 BMW (CPI) Charge Pipe Injection Kit 428i (F33) an optional 2STEP rev limiterAdvancements of S55 flash tuning and JB4 back end flash maps have removed the software fuel limits but created a new limiting factor, high fuel pressure pump volume. With higher boost targets and E85 fuel mixtures, the high pressure pump is not able to keep up with demand resulting in fuel pressure drops that trigger engine misfires, stuttering, and limit your overall performance. The Fuel IT S55 CPI kit addresses this limitation by adding extra fuel