bruce

[ES1]

Are we running out of injectors or are the chips not programed correctly?
Hope the above makes sense.

 

[bruce]

Originally posted by ES1
Are we running out of injectors or are the chips not programed correctly?
Hope the above makes sense.

If you're talking about one of DS, then yes.
Once you see the two injector liines in the PW screen cross you're out of injector. BUT, you can get a poorly programmed chip when you do have enough injector, that still runs them static.

Just to try and better explain it.

You can run 40s and try to force them static have have all kinds of fuel blowing thru the motor. For the average guy, just running the injectors static, and twisting the boost to prevent detonation is their way of tuning. Only problem is that you have the worry of detonation and headgaskets failing because of what happens when the injector TRIES to go static.

Or imagine, running 50s at a 80% DC. Same 40 PPH of fuel available, at WOT. But, no longer do you have to worry about an injector hanging closed since your not trying to force it static. Plus you have more fuel available for the accleration enrichment stuff.

Injectors and chips walk hand in hand. So while any injector that's running static is too small, a poorly tuned larger injectors chip is no better. When you get to the large injectors then you actually have room to tune the fuel curve.

You can go quick on anything, trick is knowing how fast you want to go, and how reliable you want to be when you get there, IMO.

 

[ES1]

Thanks, do you have any idea how far the 40s can go?

 

[Two Lane]

bruce,

Can the 83# Siemens (actually 85 or 86#) injectors be controlled by the right chip to run with a desirable A/F ratio from idle to 6000 rpm?

Some feel they are impossible to correct from being too rich at idle & lower rpms.
___________________________________________

I hope you're having a great Thanksgiving, bruce.

Thank you for all your help on the board!

 

[bruce]

Originally posted by Two Lane

Can the 83# Siemens (actually 85 or 86#) injectors be controlled by the right chip to run with a desirable A/F ratio from idle to 6000 rpm?
Some feel they are impossible to correct from being too rich at idle & lower rpms.

I don't see why not.
I have 55s on my car and at times have run them in batch fire mode, meaning they fire twice as often for about 1/2 as long as they would in SEFI mode.

Carl Ijames claims to have 72's running emission test legal.

It would seem highly unlikely that 82s couldn't be made to run just fine.

Ya know, come to think of it I think Steve Yaklin was an ME for them.

 

[Two Lane]

Much Appreciated

Thanks, bruce!