Thanks Martin

(The Cars running 1.9 zvh, t34 on Lancia Intergrale injectors, grs, )

From where I can trace It back to, it looks as if it just runs via the boost solenoid. I can't see it t'ing off anywhere else. It's definitely not running the 3 bar map sensor though !.

I've failed to mention that I believe I have an intermittent fuel pump problem, but would that cause the the boost discrepancy?.

Matt