Cobaltpunk

So I got my injectors in and I installed a Tune that I thought would be right. Car runs fine but my CEL is on. any ideas on why? ive got an 08 LS, I went from stock injectors to the stock LSJ injectors.

rnjmur

It would help to list what the code is.

BlackTVS

+1 let us know what the code is and we can go from there. I would guess you are either using the wrong settings, or if it's running fine then it's probably a rich/lean code from your fuel trims being off. Hard to say though without any more information.

Bika

iTrader: (3)

Im guessing you got P0172 - fuel trim rich, or P0171 - fuel trim lean.
Your injectors are likely scaled improperly. Need to put in proper flow rates and pulsewidth adders, then tune the MAF.

Cobaltpunk

here is the original table.



I multiplied the table by a number that was probably wrong. How would you guys suggest I change the table?

SCcobaltSS

iTrader: (2)

What number(s) did you put in?

Cobaltpunk

I multiplied the table by 118.48% 4.04/3.41

Bika

iTrader: (3)

I'm not sure i can even read that table. it looks like it never goes above 3.73.
What units is that measuring? I cant see.

Cobaltpunk

Yeah. Thats the table that was on the stock tune. My car isnt an ss you know. Anyways. The isnt running hot, so that probably means the CEL is Rich, right? The unit is flow g/sec

Cobaltpunk

SOOO. my CEL went off. is that good or bad? the car is running fine.

umrdyldo

iTrader: (1)

We need to know what could it was and what kind of AFR's the car is seeing.

Need more info.

Cobaltpunk

Well. I dont have a wideband, what should I do? check my spark plugs?

Bika

iTrader: (3)

what you should do is get a wideband...

BlackTVS

First off, why did you change injectors if you didn't add power? Secondly, without knowing the code we can't tell you what is wrong. Thirdly if the code went away, it's probably a rich/lean code that worked it's way out. From your signature all I see is Injen SRI that adds power, with that being said, there was no reason to change the injectors/tune and go through this trouble lol.

Cobaltpunk

Ive got a 2.4 mani and TB in the mail :P so, if it went away its fine?

Bika

iTrader: (3)

If it went away and doesn't come back, you're probably fine.

I don't like the kid, but Zach has a point. CAI with 2.4 IM/TB puts you nowhere near maxing out the stock injectors. You likely lost power by putting in the injectors if you are running an incorrect AFR and have no way of monitoring it.

Atleast get a tune from Trifecta based on some datalogs...