I have an 06 LGT spec.B w/ misfire issues. Here are the key notes from the mechanic that did the diag, I'm sure it will make more sense than if I tried to explain it myself.
"Choppy on Aggressive Acceleration w/Major Loss of Power
- Aggressive Acceleration Cause ''In Progress'' Cylinder Misfire
- Roughness Across All 4 Cylinders Starting with 2 and 4
- Knock Sum - Between 8-16 Counts
- Idle AFR - Somewhat Rich - 14.1-14.3
Cylinder Compression Test - Warm/Dry:
Cyl 1 - 151.0psi
Cyl 2 - 140.5psi
Cyl 3 - 146.0psi
Cyl 4 - 145.0psi
Results Healthy and Within Specification
Notes - Post-Work:
- Fuel Pressure Within Specification
- Compression Test - Healthy
- Coil Packs Frayed
- MAF Sensor - Did NOT Appear to be Damaged - No Change in AFR after Swapping or Cleaning
- Cylinder Roughness First Counted in Cylinder 2 and 4
- CEL - Misfire All Cylinder 1 and 2 with 000 codes for 3 and 4". "“OCV Diagnostic Notes:
- OCV on both left and right intake appear to be delayed in response and a decrease in output (angle %) is also apparent. This could possibly indicate a failure in the OCV (solenoid), the cam sprockets or the oil delivery itself (clogged oil line/foreign material). - Recommend Installing new OCV (x2) and Inspection/Clean during install."
Basically, the car drives fine at low speeds and low rpm's but under load misfires. The boost leak at the turbo inlet that was mentioned above has been fixed but the OCV's haven't been replaced. The shop that I brought it to is pretty certain the catalytic converter is blocked up and that's what's causing the misfire's. I found a catalytic converter for sale that came off a 05 lgt, is there any reason to suspect that it wouldn't bolt onto my 06?