Thanks, but I followed Librands instructions and fitting them didn't change the stalling situation at all.
IF you have fitted the "newer" type of Librands manifolds where each bank exits through the chassis on the same side , then you don't need to swap over the wiring loom between the sensors. If you have the older "crossover" type where the pipes do cross over under the sump , then the wiring swap is essential.
My twopenneth , for what it is worth, is to check for air leaks in the manifolds, junctions, and mating surfaces very throughly. as this will definitely effect the idle speed.
The quickest way to check the air mass sensor is to swap it with a known good one , which can be challenging to arrange, but ask here nicely and someone might be near enough to you.
Good luck
