Instead of having one boost gauge, is it possible to plumb in one per turbo so you can see how both are performing?

Would there be any point? seeing as the pressure is balanced out by the balance bar. Maybe there's somewhere you can place them to do that? but not sure there's any point. Dual EGT gauges seems a useful idea as cylinder 6 (i think?) tends to run hotter than the others.

Only way to monitor both turbo's would be removing and blanking the balance bar - no point really, as said nothings easy.

for EGT or Wideband you really need 2 sensors (1 per turbo elbow) and gauges/monitors/loggers - and if the monitor/logger or gauge dosn't allow switching between different sensors then that can amount to big ££££££

I've seen this once and only makes sence when you measure boost as close to the turbo as possible (eg. compressor housing)

and you'd probably need 3 guages really. 1 for each turbo to see what boost they are producing, and 1 for the balance bar to see what pressure the engine is really getting.

And what if you found there was a problem with one turbo anyway?

 

engine out job to replace and you would most likely replace the other at the same time anyway as it would likely be on its last legs too - so what would the advantage be?

Would there be any point? seeing as the pressure is balanced out by the balance bar. Maybe there's somewhere you can place them to do that? but not sure there's any point. Dual EGT gauges seems a useful idea as cylinder 6 (i think?) tends to run hotter than the others.

 

The balance bar only irons out small rinkles in the boost pressure. When there's a problem with one turbo, where its under or over boosting its no longer able to cope with the flow.

 

Say for example, one of your actuators got stuck in the closed position. If you read the boost pressure from the 'heathly' side, or the balance bar, it would only show normal to little over normal pressure, when at high load, you'd be running quite lean on the side with the stuck actuator - v.bad news!

 

Closer to home, and more likely than a stuck actuator, is that the car will run rich at high load on one bank if you have a boost leak or knackered turbo - bad for MPG and not good for performance - both seem to afflict us Z owners quite regularly.

 

Just my 2p