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The largest performance gain comes from replacing the catalysts in the stock headers
DETAILS+ Direct bolt-on installation
500 RPM as tested on a 2017 Carrera 4S
15 whp and 11 ft-lbs of torque
Quad Tips in Forged Carbon Fiber (LM-700VO-LKP + TIP63101FC x 4)
Kline Innovation Ferrari GTC4 catalyst Heat Shield Option Audi-S3-8V-2022 The largest performance gain comesTHE SOUND Our main criteria for the Gtc4, to produce a super light, Inconel 625, valvetronic, full exhaust system, that would be subtle and pleasant at cruising speeds, but to open up the sound to full scream on full throttle and valve open. Replacing the stock catalyst for high flow 200cpsi HJS sports catalysts, we were able to open the sound significantly. Replacing the stock H pipe for our perfect geometry, laminar flow X Pipe, enriches the tone,
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