Water to air intercoolers. I bought one from a BMW M3 and one from a Mercedes 450 V8. The Benz unit was only $50 with the DBW throttle body, so I snagged it just in case. Both will flow enough air and provide more than enough cooling. I think I’ll go with the M3 intercooler as it’s a little more compact. The plan is to create custom 3D printed end tanks.
