I just can't figure it out. I switch DSP to on and all other tables seem to kick in fine; boost, vane position, main pulse, etc.

Timing never varies from the normal B0910 table. Has anyone ever had this problem? I have reflashed calibration mulitiple times, even went as far as to reinstall the operating system as well. No change.

I am using the 05160001.tun operating system for a 2005 LLY.

Any help greatly appreciated!

Hi there YellaCat,

Are sure the truck is stuck in B0910. You might have your timing parameters (baro) set so that the truck is stuck in B0909 and never sees timing table C on either tune. Instead it could be running in timing table B the whole time. Start in B0906.

Hope this helps :),

Nick

Thanks.

I am in TX so my truck has never seen a baro below 14psi. I should be on C if it falls above 12.3 . Should be okay there.

The only thing I can think of is something is out of range but it isn't giving me an error message. I upgraded my stock tun to DSP2 last night for one last ditch effort. This time I made a more subtle change to the A01017 table. I'll post again to see if it changes.

I did a very simple test....Upgraded my stock tune to DSP2, ran the LLY scripts to enter stock data into the DSP2 tables, and lastly added 2 degrees of timing to A0107. I didn't let it warm up to operating temp, there is no change. The switch has no effect on timing what so ever.

Beginning to wonder if there is a problem with the operating system I am running.

Did you ever try logging and playing it back with the "automatically track linked scan tool cell" (Ctrl+K) and see where it is running at. If you haven't I would try that and see.

I just can't figure it out. I switch DSP to on and all other tables seem to kick in fine; boost, vane position, main pulse, etc.

Timing never varies from the normal B0910 table. Has anyone ever had this problem? I have reflashed calibration mulitiple times, even went as far as to reinstall the operating system as well. No change.

I am using the 05160001.tun operating system for a 2005 LLY.

Any help greatly appreciated!


Timing tables are affected by the ECT table, IAT Table and Fuel Temp Tables. They follow Baro Pressure and all for the most part use multipliers to alter the final timing value.

There are also hard limit tables as well that can limit you.

What you think they do often times is not what they do, even when you change the numbers.

Good Luck,

;)

I definitely have not put in the time to log it the way I should. I normally just watch the data with the scan tool.

I am not really looking for an expected value, just the change. If A0107 is the same as B0910 except with 2 additional degrees it seems the same rules would apply and flipping the switch would result in a change of 2 degrees, no?

I have racked my brain looking for the reason it wouldn't change. I think I'll just give up and start working on building a DSP5 switch :)

do other tables change?
like if you change boost or vain posistion wil it change when you hit the switch

your truck is up to op temp?when your doing this?

are you changing the whole table by 2*?

and you are checking in drive correct? NOT PARK

it will change instantly

Definitely agree with sweetdiesel, check those as well.

out of curiosity, what numbers are you putting in? You're changing them in right section of the table right? Basic but need to be sure.

Yes, all others will change no problem. I actually use the stock vane position to tell me I am in DSP2 (quiet idle). Instant change just like you said.

This latest test I did this morning it was not up to operating temp yet, I don't think that matters but it might. In gear, foot on the brake and throttle to build up a little RPM. I added 2 degrees to the whole table at 1000+ RPM.

Sorry for the basic line of questioning :), just trying to cover the bases. Are you sure you're logging main injection timing and not pilot injection timing?

Sure no problem :)

Actually logging both right now.
ECT is at 185 and no change still. Vanes react instantly when I flip the switch. Timing doesn't change.

Anyone out there running 05160001 that can test this on their end? I am really beginning to think this is a problem with the operating system.

Tony's point is that there is ALOT of tables that influence the result, the changes your making may not influence the result enough to show up in the way you are expecting.

To verify that your DSP is working, setup 1 tune with fixed values, and your other tune with different fixed values (ie. 5* difference) Then also ensure your mutilplier tables are not cancelling out your changes.

Cheers
Cindy

well i dont see the multiplers being his problom

if he changes the timing it will/should still change

if he was saying that his timing isnt matching then yes check the multipliers
but if its not changing at all then? i would think that either his max timing table or his truck is using a different timing table A or B

how bout try this keep the dsp timing stock and adjust the timing in the main tables
or try lowering timing instead of raising it

Yep, thanks sweetdiesel.

I can change the C timing table in non-DSP2 mode and each time I see that the timing is different so I am confident my truck is running on C.

Basically I am through screwing with it and have just decided to give DSP5 a try and see if I get the same results. I believe it is a problem with the operating system I just wish someone else with the same OS could verify.