Riceburner Posted July 31, 2009 Share Posted July 31, 2009 I have a 3.9 D1 and the EFI has been giving me endless shait. I am reverting back to SU's. One guy here done it and his disco runs very well, better than mine with efi. I have been spending 4 weeks replacing everything I could think of without success. Anyone here done the same?? Quote Link to comment Share on other sites More sharing options...
Chicken Drumstick Posted July 31, 2009 Share Posted July 31, 2009 I like carbs personally, ok I know they are old tech and can't be tuned like a modern EFI. That said, I wouldn't run twin SU's, good reliable carbs they might be, but you'll drop HP and probably use more fuel. Personally I'd look at an Edelbrock high rise manifold and a Weber/Edlebrock 500cfm 4 brl carb. Either that or look into a megasquirt conversion. Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted July 31, 2009 Share Posted July 31, 2009 For the love of god, if you must go back to the dark ages don't fit a Weber/Edelbrock or Holley, they're pants especially off-road. I had both on my 3.9 and neither were as good as the ratty Flapper EFi system I bolted on before going MegaSquirt shortly afterwards. If you're completely allergic to wiring then go back to stock carbs, but for the price of a Weber carb you could go MegaSquirt & EDIS and have significantly better performance, reliability, and waterproofness. Quote Link to comment Share on other sites More sharing options...
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