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.
Free-flowing X-Pipe replaces the factory mid-pipes and resonators to improve exhaust flow, increase power, and enhance the exhaust note
Fits all Maserati GT Coupe/Spyder/Gransport vehicles (2002-2007)
Saves 16 lbs from vehicle versus factory resonators
Constructed from 14-16 gauge, C.N.C. mandrel bent T304 stainless steel pipes.
Major improvement in power throughout the RPM range.
Direct replacement with no cutting or welding required
All Fabspeed performance products are backed by the Fabspeed Lifetime Warranty
Revving the Gransport for the petrol heads' pleasure. It has a...
This is the sound of my Maserati Gransport in "sport" mode. It...
Increased power. Easy install.
Cat bypass and X-pipe center. Not too loud at all and doesn't drone on the freeway. Noticeably more power. Sound reminds of a muscle car rather than an Italian exotic but I'm getting used to it. It pops on down shifts rather than crackle. All in all I'm very happy with the mod. The engine is definitely breathing better.
I installed the cat by pass and x pipes this weekend. Sound is great, but not obnoxious. I was pleasantly surprised by the improved throttle response which seems to be significantly more than the increased hp/torque would cause.