This is a 1982 240 Turbo. I've been looking for help over on Turbobricks (seemed logical), but have so far come up with good suggestions but no solution. I bought the car a couple of years ago because I love the blue turbo wagons, and it's basically been sitting. It came with turbo issues and all sorts of other minor mechanical ills, but ran reasonably well aside from no boost. I spent the last year collecting parts and this last weekend dived in head first. 90+ exhaust manifold and a good strong turbo, 3" downpipe, intercooler, 02 sensor, new injector seals a few months ago, plugs and wires. The car now idles very nicely, cruises well, turbo boosts well, but I have one problem, there is a hesitation off-idle that just won't go away. There are no vacuum leaks anyplace. I have been through all the Bentley troubleshooting for the CIS and it's all working according to spec. Air flow plate is centered. After the installation I borrowed a fuel pressure gauge setup and had around 78 lbs of pressure from the pump. Sadly, I did not know to check the control pressure, I'm not sure how to, and I returned the tester (my buddy is now in Kansas City for a week--aargh!). After cleaning out the CPR, the car starts up and runs cold just fine--high idle etc. A supposedly good used CPR left the car impossible to start and did not change the hesitation, so I went back to mine. I had trouble getting the correct duty cycle reading until I changed the 02 sensor yesterday and eventually also found dirty contacts at the system relay by the battery. Currently the dwell is cycling 43-is to 48-ish. Setting it higher or lower makes no difference to the hesitation. I have, with the CIS ECU connected, clamped off both CIS hoses--no change. Timing at 12 or higher, no change. Car has a replacement harness. My take is that this has to be some sort of lean stumble, but I'm at a loss where to look next. Either that or a control pressure issue allowing the plate to rise too quickly? Any suggestions will be appreciated. Hope I've provided the required input. I have a complete LH2.2 setup waiting for this car, but I hate giving up on anything when it's so close to perfect.

DS