ESS Tuning S55 Intake Charge Pipes - F8x M3 & M4 Product Description In both modified and stock applications, the F8X M3 / M4 OEM charge pipes can fail causing a significant loss in power. The ABS plastic used in the construction of them is durable, however with time and due to the high levels of... MSRP: Now: $595.00 Add to Cart Compare Selected