Has anyone tried it? I have a Helix pipe laying around and im missing one of the couplers so I cant install it to see if it fits but just by measuring the stock pipe and Helix, the Helix piece is shorter about 2 inches. Im not sure if a longer coupler would work.

 

go to home depot and get a 3" to 2" plumbing coupler, it worked with my HKS RS intake. Its longer than the HKS coupler.

 

do they have 4"to 3" cause I think thats the size I have

 

thats probably it, the peice fit the large end of the HKS intake pipe and shrunk down to the size of the MAF sensor. It worked nicely for me.

 

ok thanks just making sure because I hope HKS and Helix are the same sizes but ill double check and measure it