by Richie O » Sat Oct 10, 2009 1:09 pm
Well today I got to play with the fuel screw. As I said above I was happy with the boost I had with the stock pin, 42 to 44 psi , but was unhappy with the bottom end. I took 1 full turn out of the fuel screw and went for a ride. At wide open in 5th the boost was back down to 44 psi, perfect

I also hoped that when I took the full turn out it would help my haze issue. ( pretty hazzy all times at speed and idle ). It took about 75 percent of the haze and low boost smoke. It does take a little longer to spool the turbo until the afc ( pin ) drops into the deep side then its game on. As soon as I get my valet set up ( still need to buy ) I will be able to tow with the ole girl with out watching the egt's so close. So in conclusion, the M2 pin did what I wanted.
1 Keep my boost at 44 psi while at the same time take 1 turn off the fuel screw.
2 Took away lots of low boost smoke and haze. ( because I was able to take out the turn )
3 Will work great with a valet.
So in my case I used it as a tunning feature to help make my 6x16's more streetable.
.
1989 W250 727, 3.07 L/S, S300, P/S Intercooler, Stans exaust, Pump adjustments, 127k miles,297 hp
1993 W250 extended cab, rag, 4.10 l/s, 6x16's, HTT 62/71/14 piston l/p, Isspro EV series tach, fuel pressure, boost, oil pres, water temp, volt, pryo, 132k/ 301 hp
1992 W250 with NV4500, 3.54's, 16cm 60mm GDS H1C, ground stock cone, Isspro tach, pryo, boost, fuel pressure, slow, rusty, dented,180k