kaliraver69

Difference between Inejn RD1430 & SP1431? It is says it is an optimized intake? Anything else?

Tsx536

-Tuned for proper air fuel ratio
-A little different diameter piping in certain parts of the intake

kaikai114

I was wondering about this the other day as well. Looks like the SP version has different tube diameter from one to the other end. I'm guessing it's done to create higher intake air velocity for a more "pushed" effect? But I guess we won't really find out without a dyno....

KC

visuelz

I have an SP one for my car and I can tell you it's louddd!!!! Much louder than the RD for my friend's TL.