Altitude and Fuel Injectors

[Luke223]

Should altitude be taken into consideration when deciding on fuel injectors? I am stuck between getting Denso 550cc or 660cc injectors…

Mod List –

Free Mods
Removed Air Can
K&N Air Filter
NGK Plugs
Magnecor Wires
VDO Boost Gauge
Extreme A/F Gauge
Dejon Tool; Intake, UICP, LICP, Modded SMIC
Ported; 2g Manifold, O2 Housing, 16g Turbo
Extreme 3" Turbo-back Exhaust
Extreme MBC
VDO EGT Gauge
VR4 180lph Fuel Pump
Pocketlogger
S-AFC II

Altitude in Albuquerque is over 5000 feet. I am hoping to be able to run about 17-18 psi boost in the street and I might visit the drag strip next year just to see what ET I can run. Any recommendations would be appreciated…

Luke

 

[kpt4321]

With a 16g and 17-18 psi, 550's are usually enough, even way down here at a couple hundred feet.


....Kyle T.

 

[peregrine]

yeah 550's is plenty. altitude doesnt make that big of a difference on FI cars. a little but not much. if you plan on getting a biggger turbo sometime soon down the line i would go with 660's.