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you do know that the TT supra pump flows worse than the tt rx7 pump??? I suggest you clean that up before you go around stuffing 1600cc injectors all over the place.... And trust me a 60-1 is out flowed on our cars... Up top it starts to loose boost... trust me I had one... First I had nowhere near 1600cc injectors, which are a bitch to tune. I never hit the 90% duty cycle on my 800's( I dont remember if it was 880 or 800 old setup).. So I would suggest you drop those injector and get a way smaller sprayer....
got a friend with a 9 sec drag car, Rx7, the supra fuel pump seems to be enough for him so I am not worried about it.
as far as the 1600cc sec. injectors car should be fine at 22 pounds of boost, im not worried
O I forgot to ask.... How are you running those injectors???? as in what are you using to control them???? Its gunna be a bitch to tune those 1600's im just giving you a friendly warning...