I wanted to give you guys a idea on my whole set-up so you can better help me:
Engine:
Stock 1982 Corvette Crossfire Engine, cast iron heads
No modifications to engine
Tested good on compression, new stock oil pump and stock water pump
Ignition:
Stock remanufactured HEI distributor, AC Delco Wires, Bosch Platinum 2 plugs, New coil, cap, and rotor. All ignition components are new.
Double checked TDC and firing order of wires….everything correct. Base timing set at 6* BTDC and actual timing at idle is approx 17* BTDC
Transmission:
Rebuilt 700r4 w/ overdrive
Has shift kit and new TC w/ a slight stall
Also using a 4000 pulse speed sensor in transmission
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&viewitem=&item=220095546113
Engine Control Unit:
Remanufactured ECM 1227730, custom harness and custom chip
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&viewitem=&item=8071872892
1990 – 1992 Speed density set-ups
Chip is written for a Stock 1990 – 1992 Camaro TPI w/cast iron heads
Sensors:
All sensors are brand new
Map, IAC, Oxygen, TPS, VSS, IAT, CTS, and Knock sensors
New relays for fuel pump and fan
http://tpiparts.net/inc/sdetail/357
Fuel Delivery:
Brand new stock TPI in-tank pump
New crossfire fuel filter
Stock 22lb injectors, flow tested and checked w/new o-rings
Fuel regulator, used, stock and looked fine
TPI unit:
Stock 1986 TPI unit removed from a camaro
Has cold start delete using the plug and cap on fuel rail
Stock 48mm throttle body, throttle plates nice and tight
Brand new gaskets
New K & N filter on throttle body
Emissions:
No emissions – EGR taken care of on the chip
Has EGR block-off plate
No fuel canister purge, removed from chip. Throttle body has vacuum cap on that hook-up.
No pvc valve, spot in manifold is capped off
Have hose ruuning from passenger valve cover to throttle body vacuum.
Charging system:
Rebuilt stock starter (brand new)
Rebuilt stock alternator (brand new)
Brand new battery
All new belts and hoses
Cooling:
Stock water pump
Dual spal electric fans
Aluminum radiator
I think that’s everything…
Now Symptoms:
1. Slight miss at idle
2. Seems to be running lean, fumes burning eyes like tear gas.
3. Chugging at cruising speed, goes away upon acceleration, comes back after letting off gas
4. Several plugs have white film on electrodes…sign of lean condition
5. Vacuum check shows vacuum at 19 inches at idle slightly fluctuates between 19 and 18….kind of like a heartbeat.
6. Vacuum at 2000 rpm holds steady at 25 or so inches…no movement.
I didn’t seem to have any of these issues until I installed the TPI system, it ran decent with a carburetor. Hopefully that’s everything……Thanks for the help!