Hi all I recently put an aftermarket turbo on my 96 Gq 4.2 EFI its dual fuel (Petrol,Gas) and upon getting it dyno tuned it couldn't handle anymore than 4 pound boost which is pretty low it also pings from about 3000rpm on fuel and slightly on gas! so I was wondering if anyone else has turbo'd this motor before and if so have you managed more boost than this and did it ping?
cheers Mick