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Andy, what's up?

You can definitely do without a gauge. Now, some wideband units are integrated with the display. For example, my NGK AFX has a box which displays the AFR but is also required to...

Andy, what's up?

You can definitely do without a gauge. Now, some wideband units are integrated with the display. For example, my NGK AFX has a box which displays the AFR but is also required to...

Joe,

when I open up calibration 0202003 COS3 tune (which you do a full reflash with and then reflash the 1 bar tune on top of that) to get the full COS3 tune. There is no option to save the file...

Thanks Joe.

Always so helpful.

Looks like this software update caused nothing but trouble for me.

It seems that a tune that was modified with the old software version cannot be modified with the new software version.

Now, I...

I updated my software to V7.5.7. I have V1 hardware.

I have been running a COS3 tune and now when I try and update injector data (went from 158 lb to 79 lb injectors) I save my changes and 2 files...

You all are great. That did the trick. Mine is the old version, V1.

I do get this warning when I open up tunes now though:

Address Range Report
The following calibrations have been excluded:
...

I am able to download the files from Tune File Depot (i.e. 2002 silverado 4.8L tune) but when I open the file in EFI live, all data is blank. No tune is present. What's going on?

It's DBC.

In that case, are the drivers specific to the PCM itself, or is it just part of the tune? I'm sure there's a G-van 1mb tune out there available (they had cable TB to my knowledge).

You might try looking for the injector data from a magnacharger radix truck tune.

Thanks for the reply. At least know I know why there is no COS for that OS. I was always under the assumption it was just wasn't done and there was no care to do it, rather than an actual hard limit...

I really want to run the ethanol sensor and have the PCM control fueling based on composition.

I see posts here and there about people running hacked tunes to get this done and I am specifically...

Thank you the responses. Makes good sense.

Just wondering if anyone else has seen this issue. It's a COS3 tune on 2002 OS. I'm inputting the new injector values, save the tune, reopen and the values have been automatically changed. I.e.,...

B3204

Solved the cold start issue...had to add a 0.2 oz initial fuel prime. Starts instantly like on gasoline. My only problem now is that anytime I turn the key on fuel is being squirted into the...

Cold start AFR is less than 6, that's all the gauge will read down to, maybe I can reconfigure it

The only issue I have is cranking basically. Once the engine fires its smooth sailing. The blend...

Anyone?

Stoich is 9.765 for true E85. But the stuff in the pump right now is winter blend, E70. So stoich is probably closer to 10.2. I don't see that making the difference here. 2 cranks tells me it needs...

10.09, commanded AFR part throttle is 9.76. Running OLSD in COS3.

I've tried lowering cranking AFR with no effect. Put in the cranking VE table and commanded fuel on startup from a flex fuel...

Any update on this? I'm having this same issue. Perfect starts on gasoline, but cold starts on E85 takes 2 cranks and sometimes it struggles to idle for a couple seconds after startup.

Definitely. But would there be any advantage (or difference) to doing it that way versus how I defined it?

Thank you! I was going crazy trying to find that file. I took out the changes I made to the sae.generic file and put them in the calc.pid file to avoid losing them when updating software in the...

Just to let everyone know I just ended up modifying the sae.generic txt file. I do not have a calc.pid txt file anywhere in my EFI live folder. I'm wondering if it was gotten rid of with the most...

Well, long time but here's an update. HPTuners has a new table called "minimum throttle release." Tq converter no longer unlocks at 0% TPS. This would be highly beneficial to have for those of us...