Tunnel ram or no tunnel ram...

Miszny said

In case of IFR my understanding is that these restrictors deliver only gas so they can be rather small. In my case t-slot restrictor was not allowing the engine to pull right amount of gas in the transition slot which resulted in very lean condition.

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I understand. But all the circuits over lap so IMO until you clean up the idle circuit, reduce the emulsion, make sure the main jets/power valve/PVCR are right for a cruise you really can’t get the T slots correct.

Thats why I do the T slots last.

I get that you took the restricters out and it made the engine happy(er) but you haven’t tuned the rest of the carb up yet.