by Remps » Thu Aug 24, 2017 5:29 am
The ramp on that pin is more conservative on the bottom, with more fuel available on the top end. This allows more tunability with aggressive fuel screw setting and/or large injectors. On a stock pump and injectors you will definitely have to crank the smoke screw down some so the pin is at the same starting point as stock. I'd start with about 3 turns in on the smoke screw and see how it goes. Two mini flat screwdrivers will work to wiggle that tamper cover off the smoke screw, and it can be re-installed afterward if you want it to look stock. Smokescrew adjusts pre-boost fuel, starwheel adjusts boost/fuel ratio, so adjust smokescrew for off-idle response/pre-boost power, then adjust starwheel if necessary if it still feels weak accelerating with boost.
'90 D250 R/C,727,IC,6x.009's,1/8" bump,fuel psi,straight pipe w/5" stack.
'90 W250 R/C,47rh,K@N,HX35,1/8" bump,2nd gen IC,boost,egt,trans temp.3.07's.
'96 2500 S/C L/B,2wd,NV5600,3.54 L/S,cai,egt,pacbrake,mbrp exhaust,10 plate.
Bring back the Bank of Canada, PRE- 1974.