| Ok calm down
There is a chance ESS changed the design but when I got the kit (aug 2010) they only had one size rubber/silicone intake hose to go from the MAF to TB. For 325 they supplied rubber step down rings to adjust for smaller diameter of 325 intake parts. The silver clamps are the same.
There is a chance that the system worked without those rings if the clamps were really tight. But if there was a leak it would add unmetered air into the system.
Physically the intake would install that way (with step down ring on the MAF side) but I'm not sure what it would do to the engine management. I would get the new MAF. Afterall getting more air into the engine is the whole point. More air = more power.
Last edited by lab rat; 01-13-2013 at 11:39 AM.