Marty, goes by 'Maintain', has my 230cc Hybrids (Single Shot) and a 38R and said he gets around 20 mpg highway, and that's with cranking out several near 12 sec 1/4 mile runs.
The top 7.3 PSD in the 2.6 class at Sheids this year ran a 38R and built his own 250cc Hyrbids.
I know guys with this same combo drive everyday, too, and love the combo.
In fact, I got a 38R and am collecting the parts to run this set-up on my OBS...
Stage-1 Singles will get you very little power increase.
Stage-2's will get you about 60 hp more.
Stage-3 Hybrids, well, with the right mods 150 more hp is not out of the question. But they can be tuned down, too, for work, towing, or economy.
yea, 2 people that i know with performance injectors, one with stage II's and one with stage III's with upgraded nozzles, and it idles like its got a huge cam, and i guess thats the upgraded nozzles doing that?
Um, no, I'd say needs better programming. Should idle smooth. Unless it's a jacked up HP program.