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Engine power seems to me a little bit low according to the mods you have. Cause Jamsport claims that matched inlets give around 7 to 10 bhps on a stock engine. If it really is so then your car was giving around 155 ish without all your mods which is quite low for a 172.
I'd be concerence with that big dip in power at 6500 and he torque curve is pretty erratic. Numbers mean nothing, you want the curve to be as smooth as possible!
yeah your filter must be s**t , look at you total torque-dip around 3700 rpm.. wow !
But a remap to suit your inlets will make yours a different car as it does look willing ! Could come out a lot better because now with the large dips you are still making quite good hp at certain point. Imagine what a good filter setup + remap to smoothe out the dips would do