Why such a small amount of NOS shot. 20-30hp isnt that much epsecially on a boosted engine with the JRSC, you will already have good bottom end. Why not do a direct port setup where your going after the SC and TB. You will get a better result and not have to worry about damaging the teflon rotors in the SC. Im sure you can run a 50-75 shot and not harm your engine. If you want 20-30hp get a VAFC and or do some dyno tuning on your car, or get the ATI procharger for about the same price and make more hp than you ever will with the JRSC.