07-29-2012, 09:10 AM
Join Date: Mar 2009
Location: Georgetown, Guyana
First - EFI - Electronic Fuel Injection - comes in two flavours, TBI - Throttle Body Injection, and MPI - Multi-Port Injection, with the essential difference being that TBI systems have one injector in the throttle body, and MPI systems have one injector per cylinder - so technically, your TBI system is EFI.
Second - depending on what market the vehicle was built for, a 91 Samurai could have a conventional carburettor, an electronic feedback carburettor or fuel injection - US model Samurais are amongst those that shipped with the electronic feedback carburettor, and they are equipped with ECUs, so the presence of an ECU does not guarantee that is is EFI.
Last - it's hard to see what's under that air intake - you need a better picture if you want a definitive answer.
Oh - to answer your question - why would anyone convert EFI to carb - EFI systems can be a pain in the butt to diagnose & repair, especially if they fail out in the back of beyond, old school guys are often more comfortable with carbs, and if SMOG tests are not an issue, they will convert for the peace of mind.
98 - 1.8 Mitsubishi Pajero iO
98 - 2.0 Suzuki Grand Vitara - SQ420
05 - 2.0 Suzuki Grand Vitara - JB420
15 - 2.4 Kia Sportage
Last edited by fordem; 07-29-2012 at 09:16 AM.