speaking of 74mm TB's
I replaced my NA TB with a 74 when I put the DCAI's on. one small issue I have after the change was when the car is cold, as in colder weather on a fresh start, it starts and runs just fine. But if I don't let it warm up and as I pull away, I have to start off with a light throttle because if I accelerate too much it suddenly dropps off power between 1st and second. It stumbles, loses power and then I back off the throttle and returns as normal. Once the car is on the road and warms up it's fine and doesn't do it again. Cold starts in the summer rarely, if ever do this. It began right after I put the larger TB and larger duals in.
So it seems to me to feel like a MAF issue, that the cold air rushing in overwhelms the gas input resulting in the stumble, but when the bay is sufficiently heated then the sensor doesn't notice more air intake for the fuel provided. Does this make sense? Anybody else have this issue? It doesn't bother me that much, all in all, but if there's a fix for it then i'd like to do that.