TBI was designed as a Band-Aid fix to transition from carburetors to port fuel injection 30 years ago. It's marginally better than carburetion, but it's hardly worth wasting a lot of time trying to adapt it to an engine with siamesed intake ports that can't be readily adapted to any sort of cylinder-specific sequential port injection. I think I'd rather spend my time designing some sort of intake manifold modification that might get a port-type injector aimed at the back of each intake valve if my intention was to upgrade to computerized fuel injection and ignition timing. At some point, it's sort of like putting lipstick on a pig- - - -not very practical for the effort involved.
Jerry
Pretty much my experience as well. Granted the tbi might be better than feedback carburetors, but that is like stating a headache is better than an upset stomach.
Will state I have never had any experience with aftermarket tbi's but have had MANY customers that transplanted these engines with o.e. tbi into older vehicles trash the tbi in favor of an old-fashioned carburetor, always significant improvement in both power and economy.
O.E. tbi's were a dime a dozen at the local swap meets back then.
Programmable aftermarket units may be different, like I said, no experience with these.
Jon.
