Got my car back Friday from XFT. My car was at 325rwks with Nizpro cooler,4in Nizpro exhaust and cats,dump,actuator,flapper,1000id injectors etc. Was going to go the GTX35 but changed my mind and went with the Precision 6235,also added race air box and battery relocate,valve springs,twin fuel pumps and surge and ZF tune. I had heard the GTX was laggy from people on here and at a track day from GTX owners. The Precision is awesome, it doesnt seem laggy and it pulls harder and harder right up to 6000rpm. Its the first 6235 Simon had done and it made 430kws on 98. I said before the tune I am happy with 380-390 but he said it wants to make power and 430 is it. I don't know the technical reason with boost,psi etc etc.....he's the expert. I forgot my dyno sheet but I'll grab it and upload it during the week.