Injector Question!

[bigred_stroker]

I am trying to figure out how to understand the code / numbers on my injectors. I googled it and searched the forums on here and another forum, but didnt have any luck. My injectors had AD1831551C1 on the top and below it had 55113589646. I am assuming that they are stock injectors, but I am trying to better understand what the numbers and letters mean and what it designates.

[cliford]

you have AD injectors.

[bigred_stroker]

What are AD injectors compared to others?

[MacDougall]

AA injectors flow about 90CC of fuel i believe, AB code injectors flow about 120CC of fuel and AD code injectors flow about 140CC of fuel... this is what i understand any ways.

[cliford]

yup pretty sure mike nailed it. i think AD's flow 136 max which means with a stock injector you can only flow enough fuel to make like what 70 extra HP i think somewhere around that number.

[Big Calo]

How much would an upgraded hpop help with stock infectors and a tuner vs stock hpop and stock injectors with a tuner? Thinking about going with dp or tw.

Early 1999 250

[bigred_stroker]

Originally Posted by Big Calo

How much would an upgraded hpop help with stock infectors and a tuner vs stock hpop and stock injectors with a tuner? Thinking about going with dp or tw.

Early 1999 250

I am interested in this except with an 02.

Also, just for future referance with injectors, if AD designates a split shot stock injector, then how is a aftermarket upgraded injector designated?

[orng1]

Well there are a lot of ways to get more fuel, raise the rail presure, high performance HPOP, tuner and bigger injectors. You can't go to big of a tune or injector because you run out of presure from the HPOP. You can raise the rail presure to the injectors a bit to squeeze a little extra power but you still need that HPOP for the presure to get the injectors to spray all the fuel. It's very difficult for me to understand but that is how I understand it. I might be wrong.

[cliford]

yea bob is correct to an extent. you can run hybrids on your stock HPOP and get power. with our fueling system though it is more difficult to get power unlike cummins or duramax.

[ianstew]

yep more fuel wanted = more oil needed. bigger oil can benefit even stock injectors, af few on here have reported better idle, and more MPG.