Originally Posted by 2wd-K5
why not just change the injectors and regulator, changing over to a mpfi setup is a way bigger and more expensive job than fixing the existing system
uh, no, it's not. there is a "spider" unit that converts the stock cpi unit to an actual mpi unit. it relocates the actual injector to the heads instead of middle of intake. i've done this on my 98 tahoe. the kit can be had for about $300-$350, requires a couple hours for the average mechanic. nothing complicated or hard. basically, the upper plenum comes off, take out stock spider unit, install new one. put it back together. that's the basics.
BWD part number 63886, which is available online and most auto parts stores.