Bad Injector Possibly? Need Advice.

[dsmgst1995]

Ok heres the deal, my 2g eclipse is running extremely lean at idle. My wideband is reading 20.1 and then dashes. When im on the throttle is runs rich. Im thinking one of my blue max 1650cc injectors are stuck open causing this. Thats my thought. Looking for some more ideas.

 

[gusu]

Are you sure its not your tune?

 

[GsxMan98]

post maf or mas boost leak?

 

[dsmgst1995]

Possibly. I just had it tuned by a comany slowmotion motorsports. I drove it home. Ran good and strong. The Air to fuel on my wideband was normal then now a week later its doing this. So im not to sure.

I dont think its a boost leak. My turbo still holds 20 pounds fine. The car still runs great besides running lean at idle. Possibly the maf but i replaced it just a year ago so its hard for me to believe its bad already.

 

[gusu]

Did your battery die and you lost the tune?

 

[dsmgst1995]

No battery has not died. Im pretty sure its the injector. I can hear a little bit a injector chatter when i listen closely. So im going to check them today to find out

 

[dsmgst1995]

Turns out the power im putting down on pump gas isnt enought for the bigger injectors i have in it. So im going to have the tune switched to e85 and should be fine then. 600whp here i come with fwd .

 

[bryanwheat]

You actually just don't have it tuned right, have a vacuum leak/boost leak somewhere or have a bad component. . You don't have to run a certain amount of power to be able to run a bigger injector. If this theory were correct than the car would be un tunable until the turbo was fully spooled. It isn't like that though, you scale the injectors back so they will make the right a/f ratio at the right rpm/airflow.

 

[Calan]

So im going to have the tune switched to e85 and should be fine then.

If your profile is accurate, you're probably going to run out of fuel pump on e85... especially if you push that turbo to what it's capable of.

And if you're really shooting for 600hp, your going to need a different boost gauge at the very least.

BTW - Post up a log.

 

[crazyquik22023]

More than likely a boost leak. Do a boost leak test, fix leaks and post back.....

 

[dsmgst1995]

Ok, its not a boost leak. Did a boost leak test today and its fine. My injectors are only at 60% duty cycle tho. Some people have told me that they think my injectors aren't staying open long enough at idle causing me to run lean and staying open to long at wot causing to run rich.

 

[Calan]

Some people have told me that they think my injectors aren't staying open long enough at idle causing me to run lean and staying open to long at wot causing to run rich.

Did these people bother to explain what's causing that?

As I stated earlier... post a log.

 

[dsmgst1995]

I dont have a log.

 

[Calan]

I dont have a log.

Ok .

 

[dsmgst1995]

I appreciate the want to help tho. Im taking it back down to slowmotion motorsports to figure out whats wrong forsure tho. I'll let you guys know forsure when i find out. On another note, im going to have to run duel 255's for e85?

 

[NOSLO2PT0]

I appreciate the want to help tho. Im taking it back down to slowmotion motorsports to figure out whats wrong forsure tho. I'll let you guys know forsure when i find out. On another note, im going to have to run duel 255's for e85?

If you don't want some built-in air conditioning in your block, you will def. need to upgrade your fuel system. A single 255 on E85 won't keep up with your 35R if you start to reach its potential. My FP3065 (35R cold side, 30R hot side) utilized a Walbro 255HP in-tank, feeding a Bosch 044 inline pump. All fuel demands were met easily, running 33psi on E85 with that turbo.