Hey I was wondering what kinda timing everyone is running when in lean cruise. Currently I am around 33-35 and leaned out to 15.2-15.5 not sure what it help on mileage dont really do much long distance driving o see what it gets on the highway.
Also I am running COS3 I am having a slight idle problem when sitting still and IAT rise my idle goes up and down I am going to try the a0015 table and get my afr back where it needs to be but dont think that will fix my idle. Any thoughts?

Also with the mods in my sig what kinda hp and tq should it make at the motor? Kinda wanting to see how close EFI Lve might be it shows 375hp and 400tq. I dont really care what it puts out it runs good for what it is.

 

400ft-lbs is a bit much for any naturally aspirated 5.3L. If you're running speed density, this would suggest the VE table is a bit higher than it should be, possibly due to incorrect stoichiometric AFR.

 

both are flywheel numbers. ve should be close like + - .02

 

Yes, but 400ft-lbs is more than a naturally aspirated 5.3L can make. Those numbers are calculated based on cylinder airmass (computed by VE) and ignition timing.

At sea level, you'll see approximately .72g/cyl of actual airmass. If you're seeing more in your log file, your VE table is overstated. This could be caused by mis-reporting wideband or a VE table that has been tuned without taking a 10% ethanol blend into account.

 

i understand what your getting at but with gas stations around here there are some that have ethanol added and some that dont so kinda hard to tune for both. Wouldnt it? I believe my timing logs do only go up to 72 or 74 have to check. But they are on another pc. But I should start there to find my rough idle? If you want I can email you the tune since yall have helped tune mine in the past. Thanks for the help

 

So anyone got an answer to the timing question?