31-10-2013, 02:19 AM
The XSi head uses larger valves, But the GTi has better cams, Inlet and exhaust manifolds, (the inlet works very well) higher compression and a better ECU
Overall Road Going Production Class Winner at BARC Gurston Down Speed Hillclimb 2012, 2013 & 2014 With a class record along the way (For a while), Taking 2nd place will be Ian Redding's 306 GTi
2016 Castle Combe GT championship class winner
2016 Castle Combe GT championship class winner