dumb question about rattles

[stacks04]

TBIQ is a table that will cause a great number of unexpected changes to everything in the tune.

That reference table works hand in hand with the TLIQ table on the shifts and the base tq tables.

If you alter TBIQ you will have to alter TLIQ and Base TQ to make it shift properly.

If the rattle is at a specific area only I would log fuel pressure actual and desired and also main/pilot timing, maf, baro, boost, tq_dma, TPS%, Fuel_main_dma.

If you want a PID and Dash layout PM me your e-mail and I'll shoot it over to you, if you get really stuck I could offer you some help if you stop by.

Tony

i never changed the tliq since modifying the tbiq. i changed the throttle base i think to much in the left side of the table. if it works like i am thinking it should stop to much fuel until the rpm is up higher.

 

[GMC_2002_Dmax]

i never changed the tliq since modifying the tbiq. i changed the throttle base i think to much in the left side of the table. if it works like i am thinking it should stop to much fuel until the rpm is up higher.

The order in which things works is this:

1) TPS% sets mm3 amount asked for by the driver via pedal %
The ecm uses this value to look up the the fueling in main injection pulse w or w/o pilot by using the mm3 reference in TBIQ, but

Before it can determine what mm3 quantity is it needs to lookup the fuel pressure request and that is rpm and mm3 based.

2) Once the ecm determines fuel pressure it determines pulse width and then references pilot and main timing from that reference.

3) On a shift the base tq table is used as a look up table by the ecm for the TQ limited injection quantity table, this is a limiter overall and on the shifts, it is responsible for the defuel effect on shifts.

4) All of the above is worthless information unless you map out all the add-on tables based on ect, iat, fuel temp, baro, etc and once you do that all those calculations have limiter tables based on MAF and other factors built into the ecm.



So the time it takes to map it all out is time consuming, and without the effort to do so it makes it hard to figure out what and why things do what they do.

 

[stacks04]

okay the throttle base injection seems to have cleared it up. i also made some changes to my vain tables giving it some quicker spool to eliminate smoke. i ran it hard this morning maintained 22k at the low on initial wot, then it recovered and maintained 23,4xx for the rest of the time. i guess i should be happy with the lift pump for sure. i have 2800us at 160 mpa, should i try adding some fuel?

thanks for the help guys. i also got to make a nice maf map to use if i need it. although the smoke isnt to bad now.