At BDS Motorsport , we pride ourselves on our in-house cylinder head development. Our team of experts work diligently to improve critical areas for maximum gains, utilizing CFM testing to pinpoint specific areas in need of improvement. We have found up to a 30% increase in CFM on some heads when compared to the standard. While we focus on CFM, we also ensure that we maintain a good port speed, ideal for torque. High CFM numbers with low port speeds limit performance to high RPM levels and thus sacrifice torque. Our head development services start at £550 plus VAT, which includes the first CFM test on both the intake and exhaust ports. We strive to work cooperatively with our clients to ensure their specific requirements are met, and we even have the capability to produce custom parts if necessary.