Removed both pieces of foam on my 2010 GT auto. I compared Brenspeed 93 octane and Bama 93 race tune today. The Bama race tune was very loud without the foam in every gear while the brenspeed tune was only loud after 3000 RPMs. Why is this? Does the Bama tune keep the charge motion plates open all the time or is there another reason?
Sound tube foam removal
- Thread starter StangPhd
- Start date
