the only suggestion i have is find someone with datalogit, copy your tune
get the engine setup correctly, base timing, remove your bov or fit it (how ever you like), check the aac valve, check idle air control, check for basic vac leaks etc
then DATA INIT
perform self idle adjust as per powerfc-faq
and let iet idle for 30 minutes (dont drive or f**k around, just let it idle as per instructions)
then confirm you have good idle and stable de-accel
ie go for a fang around the block and confirm its OK
then "write" your previous tune over the top
if you dont have access to datalogit its a bit painful to do it manually
ie pay someone beer to copy your tune