injector size??, maybe someone is running this setup? Options

[SPOOLED91]

i'm gonna do the 3" Gm mas w/ translator setup. I know you can tune fuel with this and i just wanted to know if i should go with some bigger injectors when i do this to aid my tuning. i have a walbro 255 and plan on getting that new FPR natedogg showed us.
the turbo will be an EVO 16G and i wanted to know if bigger injectors will help or harm. i know sometimes too much fuel can be just as bad as not enough. if so what size? 550cc? 650cc??

[echo]

a little away from topic but i just got a 3" blow through setup going, i have a 14b and stock 450s but it's working awesome! b.o.v is pretty intense also


but this might help...this is the chart you use to turn the knobs for fuel trim settings ... as you can see it really makes no difference what injectors you use ... so go with what ever will support your turbo/boost plans setup

Initial setup:

Set the MODE switch to match the vehicle configuration.

MODE SWITCH: set as follows
1 - OFF for 3” MAF ON for 3.5” MAF
2 - OFF for a 1G (90 - 94) vehicle ON for a 2G (95 - 99) vehicle
3 - OFF for NO Fuel Cut Limiter, ON to PREVENT FUEL CUT
4 - OFF for Flat AUX fuel control, ON for Contoured AUX fuel mode.

Set the BASE dial according to the table to match the installed injectors. If the vehicle ECU is equipped with a ‘CHIP’ that compensates for larger injectors, then calculate the BASE setting as follows.

% change = (1 - (Injector size of ECU / Injector size installed) * 100

eg. Stock ECU = 450, 550’s installed 1-(450/550) *100 = 19%
(the Translator must be set to 20% lean for 550’s. The BASE 4 setting is for 550’s)

BASE Switch: set to match injectors and fuel system.

Dial Setting % flow change Injector size Dial Setting % flow change Injector size
0 0 Stock (450) 8 -40% 750
1 -5% 475 9 -45% 820
2 -10% 500 A -50% 900
3 -15% 525 B -55% 1000
4 -20% 550 C -60% 1100
5 -25% 600 D -65% 1250
6 -30% 650 E +10% 400
7 -35% 700 F +5% 425





Idle, Mid, WOT, and AUX all follow the following table.

Dial Setting % flow change Dial Setting % flow change
0 0 8 35%
1 5% 9 -35%
2 10% A -30%
3 15% B -25%
4 20% C -20%
5 25% D -15%
6 30% E -10%
7 35% F -5%