shooter

iTrader: (2)

I'm wondering if I have to increase my injector size, I putting a heads (2.5, 5.3) and cam (torquer II) package from Texas speed, with a 90/90 set up, and a yank SS3600 stall. If I do need to increase my size what should I go with on a stock pump? Or just stay with my stock one? Which I'm thinking are 26lbs ones.

DONAIMIAN

iTrader: (18)

I belive you have the 28's. I would just wait to see where you are durring tuning. If you know your just gona keep adding power in the future tho, I would just go ahead and get them.

TORCHD 02 TA

iTrader: (39)

not too sure. but i making 404 RWHP on my stock 28lb injectors. my duty cylce is 98%.. that is high, but they are not constantly spraying. At 108% they are constantly spraying. i would go with SVO 30lb injesctors, with our motor, they really act like 36-38lbs. or jsut get 42lbs.

i may be upgrading soon

shooter

iTrader: (2)

ok i'm going to be making around 420 to 430 from what I seen from the same package on other A4's around the post boards. So what is the biggest injectors a stock fuel pump can handle?
30lbs injectors sounds good to me and there pretty affordable, 42lbs seem abit big and i'm not going to be adding anymore power in the future. Just starting over with the 2009 Camaro SS.

TORCHD 02 TA

iTrader: (39)

i would do the SVO 30lb injectors then

john563

iTrader: (17)

I would atleast do a pump.Better to have it and not need it,than it is to need and not have it.
Barry I have 42lb injectors I got from harris speedworks.About the same price as the 30,so i whent straight for the 42.I also have a intank fuel pump(racetronix).When I was making only 350rwhp my injector duty cycle was at %80 and that was on 28lbers.
john

shooter

iTrader: (2)

So does anyone know what is the biggest injector a stock fuel pump can handle?

allngn_c5

iTrader: (3)

480 + rwhp and 454 rwtq Stock fuel system with 30# svo injectors. No fuel issues at all.

shooter

iTrader: (2)

Thanks brother, you da man!!!!

Raven02TA

iTrader: (11)

521 rwhp on stock injectors and fuel system here..... not consistantly though thats on a 100 shot. otherwise 421 rwhp

TORCHD 02 TA

iTrader: (39)

wow what is your duty cycle?

Beasst8

iTrader: (1)

Yeah, 433RWHP, with a 111% duty cycle on stock injector. Went to the SVO 30#. No probs at all.