The vacuum hose was connected to the new ic. I removed the decel valve so forgot to plug hose when refitting old ic. The engine was running nicely before the mod. When I ran with the old ic refitted the afr's were a bit higher but the afr unit was restarting due to bad earth under heavy boost so didn't get a reading under full boost. Intend to run again later with over boost switch bypassed and see what occurs .
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