I had the same issues when i installed mine, but nothing that was too extreme for air leaks or functionality. Over all its a quality product.
The coupler seemed a lil loose on the TB, but sealed nicely when strapped down.
As far as the MAF and its wires, i just undid the whole wire off (wires leading to that front sensor,which i believe is the air bag sensor) the Christmas tree white clamps and its fine now. I will post some pics later.
Drove it through some rain the other day as well, and i seemed to do fine.
Still getting used to the loud noise it makes under load...not sure if i like it yet or not as its pretty loud!
Yet to see the MPG improvements as im on my first tank. If i get 1 or 2mpgs, it did its job!!!
'97 MN12 SPORT - SUPERCHARGED, LOUD, AND COSTLY
'98 LSC - LOWERED LUXURY SPORTS COUPE
'10 SES SPORT - STOCK EFFICIENT SEDAN