BMC cda fitting advice and reducer bore sizes ?

[Jay_vr6 0]

I have just ordered the bmc cda induction kit fo rmy vr6, i ordered the one thats supposed to fit the vr6 mk3 golf so i gather this should be fine, I believe i need a reducer to attach the box to the mfa, but exactly what size do i need and how long etc

I think someone mention 85mm - 80mm reducer, is this correct and is this the bore size rather than outer diameter ?

 

Any other info is greatly appreciated

[Kevin Bacon 5]

Call Stealth Racing http://www.stealthracing.co.uk as they're the only people that actually supply this bit of pipe with their BMCs. They'll know the dimensions etc.