hi iv just taking my 1.8 mreg si efi zetec engine out of my mk5 due to it blowing up iv got a 1.8 gti that iv put in that i have the correct wiring loom for wen i came to fit the engine i found my wireing loom was different wat shud i do change the loom or shud i use my efi inlet and old loom and go for dat i rele will i lose alot of power from the gti engine if i use the efi inlet andthotle body