HI everyone.I always enjoy this forum. So much info. I have a problem that I caannot seem to find. When I start up the engine, it idles pretty descent. When I put it in gear 1st,2nd,3rd with the brake pressed the idle drops down from 900rpm to about 500-600rpm. Only happens when I am in the forward gears. In nuetral,park or reverse no problem. I just rebuilt the engine so it is still not completly tuned. The only physical connection is the hose that comes from the intake manifold to the brake booster. If I hold the brake for a period of time the widebands goes rich. I will post my tune and config file. Any help will be appreciated. I am running SD 2 bar open loop with my HP Tuners. Thanks in advance for any help or advice. Please remeber that I am just starting this tune. It is used for street and drag racing.
Here is the engine specs:
Stroked 393ci,Callies crank & rods, JE pistons,Total Seal rings FAST 90mm throttle body & intake manifold w/60# injectors on their fuel rail. ProCharger D1SC running 8 rib. AFR Heads 2.02/1.6. CompCams 624/624 with 116LSA. All parts torque to specs with ARP Fastners. Melling High Volume oil pump, with SLP dual chain timing. Installed and not active yet is snow performance meth injection and 125 shot Zex nitrous direct port injection. SLP Sub Frames,UMI rear location brackes,adjustable torque arm and stabalizer and other goodies.