X2!
I've done several differant EFI systems without VSS and some were a lot of tuning work! Then add VSS and they all ran better, even if you don't need accurate speed, just the ECM/PCM knowing the vehicle is moving or not makes Idle so much better. Amongst other things!
Also done a lot of differant motors with TBI injection and made a small cap EFI distributor for every one. Jeep, Ford, Chrysler, etc...
http://www.gearhead-efi.com/Fuel-Inj...BI-Conversions!
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