well after 5 pages of enjoyable reading i thought i would chuck in my thoughts ,but just to clear up , im no engine guru .
1, for a daily driver 130-150 bhp is more than adequate t1,will do this cheaper but t4 ultimatly will give better service (both if serviced correctly will give many years of service )
2, if like me you enjoy adding to the performance of your car in a winter strip down and it does not have to be a daily driver then maybe t1 is the way to go, there are many more performance parts available at reasonable money.
3 if you want big power 250-400bhp t1 or t4 ,here is no cheap way of doing this you have to have deeeep pockets although t1 would be thew cheaper option
i suppose it depends on what you want the car for, i know i have gone off track a little but there you go
cheers jon
