Why We Choose HJS Catalytic Converters:
HJS German imported catalytic converters are made from some of the highest grade material 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.
Complete performance exhaust solution add power, sound, and throttle response to the 987.2 Boxster/Cayman; includes Maxflo Mufflers with Deluxe Dual Style Tips, Sport Headers, BMC F1 Air Filter and optional ExperTune Performance Software with Handheld tuner.
To ensure proper header seal, after initial heat cycle, tighten all exhaust bolts to the OEM torque specs.
This product removes the OEM catalytic converters from the vehicle, and as such, is strictly intended for closed track events and off-road use only. This product contains a High-Flow Sport Catalytic Converter solely intended for track and race cars as it is NOT California Air Resources Board Certified and not EPA certified. You are hereby informed and warned to check your local, state, and federals laws before buying and installing these or any aftermarket parts to be sure whether usage is in violation. All installation-risk and use-risk is borne by the end-user and installer of these parts.
No need to send your ECU in to return to stock - simply use the Handheld to flash back, then to your Fabspeed ExperTune again at any point!
Installation of headers w/ CATs, pipes, mufflers and tips was straight forward with no problems at to fitment. Had to remove some of Porsche's O2 sensor clips to give additional length to reach bungs. Because of the size of the header pipes, some header bolts are tricky to torque, but can be done. Great sound, no drone (6-six speed tranny). Headers/Muffler alone had a noticeable improvement in performance. Reprogrammed ECU gave very noticeable improvement. No CEL. 2 weeks in and very pleased. Customer service was excellent.