Excuse me guys, but due to some bad evenements came in my life this spring, i had to sell all my racing vehicule. I had a GX-5R with the GO tune pipe in a D8 truggy, but i have only break-in this engine and don't have any chace to race it.
But now, i'am to buy another buggy (a Jammin X2) and i want to put another GO in it, but i don't know if i'll take a 5 or 7 ports.

I have an Ofna 086 tune pipe here with a short conical manifold, and i want to know if i'am better with the GX-5R or the GX-7R.

Thank's for your help

David