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GTSboy, thanks for the info. At the end the day I'm shovelling shit uphill really. I went had a chat with a local tuner today, he also didn't recoment changing airflow meter size. Didn't go so far to bag the pfc but recomended using a link ecu, which is an option I like and would do, but I already have the pfc, and link will stretch my bidget a bit farer than I'd like. There's no real rush here, so will take my time a bit, see if I can on sell pfc, or will make the intake 3inch and stick with zx airflow. thanks for all your inputs.

I think you should maybe look at a different tuner, why would you go and sell the power fc just so this tuner can tune a "link ecu"?

The power fc is perfectly capable of meeting your needs, i know this because i have one and im running a Z32 with a 4inch pipe off the gt3076 and it has a 4inch to 3inch reducer just before the Z32, its in the tune and it will be fine to do it this way... Find yourself a guy thats competent in Power fc tuning and just do it.. no problem

The tuner didn't say I have to go to a link. They were fine with pfc, and actually commented that they are usually straight forward and reliable to tune. He recomended the link as alternative, albeit a costly alternative. I would still need to buy a zx airflow, here they're roughly 200-300 second hand, or 500 genuine new. That cost, plus my original purchase of pfc is starting to get close to price of a g4, so if I can onsell pfc, I'll look at link, otherwise will do the 3inch reduction to a zx airflow meter.

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