We've Developed the Fogr Throttle Body Injection system for enthusiasts looking to support 500-600hp* on ethanol blends without the astronomical expense or complexity of installing port injection or upgraded HPFP's. We've done substantial testing over the years to optimize this system for "just the right amount of fuel at just the right time". Installation is a simple as bolting our throttle body spacer in-between the throttle body and intake manifold and teeing into the Low pressure fuel line going to the HPFP. Simply connect the supplied wiring harness to a switched power source and ground and GO!

900cc of supplementary fuel (@75psi). Tee's into low pressure fuel line before the HPFP

Self contained and self controlled. No need for additional controllers or hardware

Pre-set pressure switches activate injectors at 11 and 16psi boost pressures, staging supplementary fuel injection at just the right time.

V2 design now uses genuine Bosch extended tip injectors for improved and optimal fuel atomization.

Typically installs within 1-3hr with standard hand tools.

Supports ethanol mixtures up to 600whp* (*dependent on vehicle HPFP type and ethanol content. 600whp supported on n54 scroll style hpfp on e85, 500whp supported on n55 piston style hpfp on e30)

Fits all N54,N55 and S55 vehicles. Some modifications may be required to air intake and/or charge pipes on some chassis.

Custom tuning required