Just finished a 88 shelby z with an 89 T1 2.5 block and the rest T2(including SMEC). Just put in a T2 clutch with T3 pressure plate.
Drove it for about 140 miles with no problems at all. Then while driving it started to "buck" in forth while building boost. So went to fifth and just cruised and it was fine unless i attempted accelerating and vacuum started to drop. Got it home and just went around the block and the bucking happens anytime the vacuum starts to drop and head towards boost.
So I had to swap in my other cluster to pull codes. I got a 22. Went and got a new CTS. Installed it. Checked codes and it was still there. Drove it and still bucked, still has the code. Decided to check the wires for the CTS. Everything seemed good but I took it all the way to the SMEC. While there I changed out my 2.2 for a 89 T1 2.5 and i attempted to push in the wire further into the connector. Put it all together. Check codes and it is gone. I get all excited and it ended up still bucking :bang head. Checked for codes and there is no codes. I'm at a loss as what to check/try now. Suggestions?