I was wondering what could hasppen if my idcs are to high! And what is classifed as high? 100%-130%?

 

It is said to not pass 85% IDC. Some go more than that, but my opinion is that if you continue to drive it like that you're going to hear a large boom followed by oil coming out the back, if you know what I mean.

 

So could my scan gauge be reading my stock injectors pws? Cuz I have a gm stage 3 pulley and my pw at redline are 19.4. Wtf

 

your injectors will go static.

 

What the heck is static?

 

idc stands for injector duty cycle, and its in percent. 0% would be the injectors closed all the time, 100% would be fully open all the time. running the injectors past 85% reduces the life of them. now you cant go past 100%, the injector cant be on more than all the time. anything past 100% and the motor will lean out. in general on a stage 2 tune its very rich and when it leans out with the injectors at 100% its still somewhat safe depending on what pulley you have

 

I went to this website and had the converged it over and it said my idc where high. And was wantng to do with a 2.9 but don't wanna be to lean knowing I won't have any fuel at high rpms

 

An injector in an engine turns on and off very quickly to control the amount of fuel delivered. The amount of time an injector is turned on and delivering fuel is known as the duty cycle. This is measured as a percent, so 50% duty cycle indicates that the injector is held open and held closed for an equal amount of time. When the engine needs more fuel, the time that the injector stays on (its duty cycle) increases so that more fuel can flow into the engine. If an injector stays on all the time, it is said to be static (wide open, or 100% duty cycle). Injectors should not go static in a running engine. If an injector is static in a running engine (open 100% of the time), that injector is no longer able to control fuel delivery. This could be an indication that the injector is too small for the needs of the engine. Injector duty cycle should usually not exceed 80% in a running engine at any time.

 

Nice great info. So I need better injectors? Btw that's only on a wot of course

 

Whats your current set up on the car, and what injector size are you currently running?

 

I have 42s I'm on the gm stage 2 tune and a 2.97 pulley no cooling mods

 

I would look into getting some 60lbs injectors. and getting retuned, 60 would be a good investment with your current set up. in my opinion, cooling mods would be nice to, you would benifit alot from some

 

So could my scan gauge be reading my stock injectors pw?

 

And could I slap the injectors on and go without getting tuned?

 

i dont know what the scan gauge can all read, its been a while since i looked into scan gauges,

I would strongly advise you not to put 60lbs in unless your able to tune or get the car tuned right after installing them, for you could run way too rich and wash your piston seals out, I've seen it happen locally, if you going to do 60's make sure you can tune or have a tuner avaliable.

 

No I'm asking. It can read pulse width. What I'm asking is instead my scan gauge might be reading the stock injectors since it says my pw is 19.4 at redline. Which in turns the idc is like 113%. And what u said makes sense about not being able to be on more than 100 so where is the prob coming n at?

So I need at tune whch I can't get hmm I guess bolts on till I can get 60s

 

When an engine needs to make more power, the onboard computer delivers more fuel by increasing the pulse width of the fuel injectors. if im understanding you right, which im sorry if im not it been a long day for me, if your seeing 113%idc if it accurate, your car is demanding more fuel. and maxing your injectors note your 42lbs flow 42lbs hr max. injector rates are always specified at 100% duty cycle

 

What I'm saying is could the pws that my scan gauge is reading. Cuz it be the stock injectors?

 

yes, but i thought you had 42lb injectors, thats not stock, those are stage 1,2 injectors, either way i would try to invest in the 60 at least

 

This might be a dumb question but let's say if I was running a 18 afr would I get fuel cut?

 

18 afr? like when you left off the gas, or while driving?? 18 afr happens when you let off gas and goes into deaccel mode, which cuts fuel

 

I mean wot 18 afr. Paintball what happened to the hp tuners jump off?