Honestly people have even lost power with bigger throttle body and plenums on N/A cars. It will serve up a bigger gain on FI applications. Not saying you shouldn't be building a foundation ahead of time though
Let me know how you like your new throttle body and plenum though, I found a pretty good deal on those same parts new from a local shop, just holding off until I can get a review of the GMS products
lol can you post the dyno sheet? the car was probably performance tuned after the initial dyno... it'd be hard to believe a n/a mustang would pick up that much whp from just those components
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