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both with stock cooling ducts and APR cooling ducts
Keeping this ambient ram-air cool results in impressive power gains filtered through the AWE S-FLO Intake
Replaces the restrictive factory cats with high-performance HJS sport catalytic converters for maximum performance and sound
Those looking to complete the system can opt for this APR Carbon Fiber Turbo Inlet pipe
Fabspeed BMW M3/M4 (G80/G82) Sport Cat Downpipes (21+) (FS.BMW.G8X.SC) 15690 both with stock cooling ductsGive your G8x M3 M4 more sound and power with our high flow catted downpipe. Fabspeed Motorsport's engineering team consulted with HJS Motorsport and chose the largest HJS catalytic converter that would fit the G8x chassis. This guarantees the most exhaust flow, reliability, and sound. Our Sport Cat Downpipe will flow 93% of a 3'' straight pipe, all while providing emissions compliant performance and NO check engine light. There's no need to run cat
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