Baker42
New member
Installed my T4 mount and 364sxe turbo this weekend. It lights a hundred or so RPM later but takes off pretty fast. I believe my injectors are stock but previous owner said they were upgraded. BS. Anyway the engine noise in the cab sounds like a old tractor. I mean wayy louder engine exhaust noise. I used 99.5-03 superduty plenums with Riff Raffs billet inserts. The holes on the 3" plenums had 2 extra holes that my heads were not tapped for. I just siliconed them over. I dont believe they are leaking. Truck sounds almost the same out side the cab, but inside there is vibration and more engine noise. Is this normal? Thanks in advance.