I have just got my 2.2L Turbo II running in my 87 Daytona Shelby Z. It has a ton of mods:
- +40 injectors
- T3/T4 hybrid turbo, .50A/R with 3" swingvalve
- TU cast exhaust header
- FWD Performance F3 cam (272/262 duration at .006 tappett lift on the intake/exhaust, 460/460 gross valve lift on the intake/exhaust, centerline 114) installed 4 degrees advanced
- Wiseco forged pistons +.020
- 255 lb/hr fuel pump
- 3 inch exhaust, no cat
- AFPR - 30PSI at idle, 50PSI under boost
- stock throttle body
- stock intercooler
- FWD Performance cal (BoostButton - I'll be placing an order with you ASAFP)
The motor idles nicely (I was expecting a bit of a lope to be honest) with 15 in/Hg. I get 135PSI static compression, and have my base ignition timing set at 12 degrees. I am currently running a manual boost controller set to 11PSI. I plan to eventually up this to 14.5PSI (based on advice from Chris at Turbos Unleashed) My EVO wideband shows 14.5 to 14.7 at idle, and my spark plugs look good. The motor has about 350 miles on it.
The engine is pretty slow to build boost and under WOT in 1st gear it has a bit of a stumble or miss around 3500RPM. When this happened, my wideband was reading between 10.5 and 11 so I am pretty sure I am getting enough fuel. Once it gets past this, it will spin the tires to 5000RPM and do the same in 2nd gear. I have not taken the motor above 5000 yet due to the low mileage. Unfortunately, it doesn't always stumble, but it also never pulls as hard as I think it should.
Any ideas what I should try first?
Stephen