Why We Choose HJS Catalytic Converters:
HJS German imported catalytic converters are made from some of the highest grade materials you can find in a catalytic converter. This yields high performance gains and longevity so it wont deteriorate over time like lower grade catalytic converters. These catalytic converters flow up to 93-95% of a straight pipe in most applications. The benefit is that you get the "straight pipe sound" while still being able to provide enough emissions scrubbing to prevent a check engine light. If you'd like to learn more, watch our video about HJS catalytic converters.
Complete high-performance exhaust and tuning solution for the Maserati Quattroporte
Fabspeed Maxflo Performance Exhaust System (incl. Deluxe Quad style Tips)
Fabspeed Resonator Bypass X-Pipe
BMC F1 Replacement Air Filter
Fabspeed ECU Tune (Optional Upgrade)
Fits all Maserati Quattroporte vehicles (2004-2007)
Increases power and throttle response
Includes Deluxe Quad Style Tips in your choice of finish
Constructed from high quality 14-16ga CNC mandrel-bent T304 stainless steel for maximum performance and durability
Noticeable improvement in sports car sound and throttle response
Direct replacement for the OEM exhaust system with no cutting or welding required
All Fabspeed performance products are backed by the Fabspeed Lifetime Warranty
NOTE: Fabspeed’s 200-cell high-flow catalytic converters are not C.A.R.B. certified and are for Off-Road Use ONLY in the state of California
If you are ordering this package with the optional ECU Tuning Upgrade, you must click the link below to download & print the instructions and ECU tuning form.
This form is to be included with your ECU shipment to us so that we can custom tailor the tune to your specific vehicle and meet your needs.
- HP (whp):
- TQ (ft/lbs):
- WT (lbs):