BlackGMC

iTrader: (31)

Hey, a buddy of mine is having some issues with his tune, we think the injectors are not what they are supposed to be... a shop that is no longer in business and had a reputation of ripping people off installed the injectors they are supposed to be 60#ers... Also his truck is a 5.3, with ~10psi of boost with a 255 intake and a boostapump, and his current IDC is 80% at ~5800... Attached is a pic of the injectors he sent.

thanks...

Wheatley

iTrader: (12)

can you get a part number?
They look to be Siemens but a part number would let you know.

BlackGMC

iTrader: (31)

Ya i told my buddy to try and get the part number, hopefully he will be able to get it..

Wheatley

iTrader: (12)

ok that will tell it all.

BlackGMC

iTrader: (31)

does the 80% IDC sound right for those mods? It seems kinda high to me

Wheatley

iTrader: (12)

Seems alittle high,but then again there is no telling what his A/F is.If it is way to rich than it really needs,the Inj. pulse width will increase as well!!
I am wondering if the IFR table was even scaled correctly,injector offset and short pulse adder.

53RUSSELL

iTrader: (9)

They do look like Siemens injectors. yes the 80% seems high. I'm around the 70% on 10lbs of boost.

BlackGMC

iTrader: (31)

ok, my buddy pulled the part numbers

M000200

6050P03502

trever1t

iTrader: (14)

I'm at ~56% on Siemens 60lbers...maybe slightly higher peak but meth compensates a little.

SincalT/A

iTrader: (16)

Drop in fuel pressure will cause IDC to rise also.