I'm really thankful , cause everytime I have some issues you are always helping me !!! Not only tryin to help , but also giving me the right answer! ( as u can see from this topic ) Helped me with the nitrous, 1.8 cam, cai, fuel pump, cylinder head and so on Saving my ass all the time! About the p&p head I see no difference in city driving 4000rpm max. I think i have to go and red line it a couple of times Hopefully only +++ this time