zboi Posted August 16, 2023 Share Posted August 16, 2023 I figure this has been done, but search feature wasn't working. I am wondering what is needed to slap a small turbo on an L28. Can I just do that and not need to change injectors or computer? Quote Link to comment Share on other sites More sharing options...
Brad-ManQ45 Posted August 16, 2023 Share Posted August 16, 2023 No. Quote Link to comment Share on other sites More sharing options...
zboi Posted August 16, 2023 Author Share Posted August 16, 2023 I guess I should be more technical. My only real concern is how well the stock system meters air. Is the stock AFM okay under boost? Quote Link to comment Share on other sites More sharing options...
zboi Posted August 20, 2023 Author Share Posted August 20, 2023 Ok, so answer is yes... sort of. Stock injectors will do 275hp when fuel pressure is cranked to 80psi. Stock computer is crap but you can fiddle with the AFM spring to make it work. Ignition timing will be wonky due to vacuum advance seeing boost, but a check valve can be used to kinda mitigate this. Would be better with L28et components, but can be ghetto rigged on normal L28e. Quote Link to comment Share on other sites More sharing options...
Kennysgreen280zt Posted August 20, 2023 Share Posted August 20, 2023 Since its a 'draw through' AFM, its just seeing the suck side of the turbo. I added a small turbo to a L28, only tuning was a rising rate fuel pressure regulator. I didn't adjust the timing, didn't have a A/F gauge, no interecooler, stock injectors. I didn't know what I was doing. I ended up blowing a head gasket first. After I replaced the gasket, I ended up breaking a few piston ring lands. This was in a time before there were so many choices in programmable EFI. Quote Link to comment Share on other sites More sharing options...
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