As said earlier, I had Bayjoo chips in my 2 RSTs in the 90s, as Harvey at SCS is local.

A mate had a to quote Harvey "destruction techniques" (Detection Techniques became Superchips) chip in his RST in the 90s and kept blowing his up. Harvey used a Bayjoo chip on it and he never had anymore blow ups.

Does the soldering on the chip look factory? Must be threads on here with pics of standard chips?

https://passionford.com/forum/ford-e...s-chipped.html

https://passionford.com/forum/genera...urbo-chip.html

Your fault seemed familiar as when I had my first RST it would have an initial spike to 15psi then tail off to 9/10 psi, but if you gave the actuator more preload or used a bleed valve and raised the boost at all it would cut out with high load, after it was chipped and a -31 fitted it transformed the car.