Next up is the air intake temperature gauge. I didn’t want to drill and tap the intercooler pipe work because if I made a hash of it I’d have to get the pipe work remade and re-polished. So I got a Samco 50mm T-piece from Merlin Motorsport at Castle Combe. I removed the existing Samco hose connecting the intercooler pipe work to the intake plenum and cut the 50mm part of the T-piece to the same length. Then a trip to B&Q came up with a 22mm brass compression stop end, the threaded stop end part fitted the T perfectly. I drilled and tapped the end and fitted the sensor boss (not forgetting the PTFE tape) and thermocouple cable and tightened it all up. The adaptor box is temporarily taped into position in the engine bay and the green and white cable from the sensor to the box is covered with a piece of black rubber hose.
With the boost gauge and the air intake temp gauge hooked up I took the car for a "spirited" run (some of it up fairly steep inclines) and notched up a maximum boost pressure of 14psi - so it looks like the big pulley and the ABV bypass is working properly. The maximum intake temperature was 48oC and that’s with an ambient air temperature of 11oC though in general driving the intake temp generally doesn’t get above 35oC.