Lol like I said I've been lurking around. I believe my tuner did use a resistor. Can't remember for sure tho. I'll have to go back and check when I have some free time. Right now I have the stock msp turbo manifold and DP with custom hard pipes. I'm running the aem FIC of my stock P5 ecu. I'm having a few little problems tho. I can only maintain 6psi. It'll spike up to ten but when we ran it on the dyno it wouldn't go any higher. Not sure why. The motor is built too. Oliver Forged rods and Weisco Pistons, stock compression 9:1. The Head was redone with custom Manley valves and springs. Also J-spec Intake and exhaust cams, APR Fasteners. I'm running a musimoto black Front mount intercooler also. Hope this helps