B58 Gen 1 Exhaust Cam Fuel Lobe Mod | +40% Compgates This warranty reflects Spool Performance’s

This warranty reflects Spool Performance’s commitment to delivering a reliable

the Venturi geometry promotes a controlled airflow transition that minimizes turbulence and reduces resistance on the turbocharger

Factory caps remain in place

and are proven to increase downforce for better cornering performance

Fits E46 M3 - S54 Engine with OE Intake Airbox

B58 Gen 1 Exhaust Cam Fuel Lobe Mod | +40% Compgates This warranty reflects Spool Performance’sSpool Performance is proud to offer our in house B58 Gen1 Exhaust Cam Fuel Lobe Mod service to take full advantage of our high pressure pump and injector lineup for B58 Direct Injected fuel system. Customers would need to ship their exhaust camshaft to our facility where it would thoroughly cleaned, cam profile modified in our CNC live tooling lathes, polished and re hardened before getting shipped back out. The updated cam profile provides more lift