Hi currently running a full mrc stage 2 setup with aem water meth kit. Works perfectly in terms of a cooling aid. I believe they work better in terms of power gains with direct cylinder injection (having an individual nozzle per cylinder to provide equal spray distribution to the cylinders). However my boost tap is on the inlet manifold throttle body connection. My method is only used primarily for cooling. Although there will be some gain, the inlet temps and oil temps are consistently lower than without it. The kit was fine although you may be better off with a devils own kit or something of similar quality as I have had issues with the aem nozzle being too brittle. I have replaced it with a devils own part and have been problem free since.
I contacted Ben yesterday, knowledgeable guy on th 2.5's, I may get him to build me a hybrid.
Thanks for the reply, I actually live down the road from the UK Devilsown importer Bruce, he also does Coolingmist and I am running a Coolingmist progressive kit currently on the 2.5 diesel engine in my T5.
I don't know too much about the engine from the rsq3 however if it is running the same 367 bhp unit from the pre facelift 8v rs3 I reckon a tte500 turbo with fuel pump and aforementioned bolt ons should be good for just over 500 bhp and with water meth/octane booster (nf 6 ron) should be looking in and around 550 bhp. Yes Cooling mist was the other high quality option. Mrc offered the aem kit but I wasn't too convinced by the build quality of some of the parts. I also believe direct injection while more beneficial for gains will cost more in labour due to the method of injection in comparison to inlet boost tap.
My RSQ3 donor is a 310hp 14 plate but when I spoke to Andy at Storm he gave the impression it still had the later engine but its detuned.
