no ecu needed for a throttle body. they are on a zr 160. 4mm bigger that the zs120 throttle body. with this and a good inner wing 3-5 bhp is very possible. they come up on ebay all the time some go for as little as £30. as with the zt cams and a vvc manifold you may need a remap to set it all up correctly but not to sure, not really a k- series man but somebody will be along soon who is!
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Astra GSi turbo
Regal Autosport Astra GSI Turbo 304 bhp 356 lb/ft
Thorney motorsport Vectra vxr 305bhp 398lbft
Now its time to build a big turbo MG ZS
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