I'm having a lean spike on WOT off idle. I'm confused on what I'm not seeing. I don't think I need that much fuel there.
I'm having a lean spike on WOT off idle. I'm confused on what I'm not seeing. I don't think I need that much fuel there.
What vehicle, engine, modifications? Is your fuel injector data correct? That is a rough lean spike down low and thats quite a bit of knock. Does seem the narrowband also shows the spike so probably not a slow wbo2 reading. I would pull some timing and maybe even richen up a little to see if that helps the knock.
2013 CTS-V Coupe M6 - 1 7/8" Headers, 3" x-pipe, stock mufflers, Airaid intake w/green filter, ID1050X injectors, DSXtuning flex fuel kit, DMS under hood tank, upgraded pump, 3/4" lines, griptec 2.4" pulley, solid isolator, 100mm idler, reinforced brick, MM mild catch can, AEM 30-0334 wbo2, 600whp/630wtq
To my novice tuning eyes look at your dyn. air vs. maf and VE. Your VE (or VVE) and your maf need to be richened up
LEAN.JPG
01 s10 blazer 5.3 706 heads slightly ported sloppy stage 2 cam stock injectors
Which 'stock injectors' though? Because a 2008 Trailblazer 5.3L LH6 certainly did not ever come with injectors that flow 40.8lb @ 400kPa Delta, and 'stock injectors' could be any one of about fifty different part numbers.
stock 12613411 injectors, stock gen 4 intake and throttle body.
2001 S10 Blazer 2012 5.3 sloppy stage 2 cam. 706 heads oversized valves slightly ported. 4l60e, 2800 stall, 3.42 rear gear
Oh. Yeah. Then you need to read this: https://forum.hptuners.com/showthread.php?98228
You put late Gen4 data into an early Gen4 and the labels don't line up the same, they do not interchange like that.
Try this, quickndirty conversion: 49 - 12613411.hpt
Ok thank you.
2001 S10 Blazer 2012 5.3 sloppy stage 2 cam. 706 heads oversized valves slightly ported. 4l60e, 2800 stall, 3.42 rear gear
Thanks. Does this affect the VVE tables and if so what else could be affected by this.
2001 S10 Blazer 2012 5.3 sloppy stage 2 cam. 706 heads oversized valves slightly ported. 4l60e, 2800 stall, 3.42 rear gear
For anyone else in the future that needs the real/complete fuel injector data for 12613411 on an older style ECM (128 - 640 kpa) here it is.
49 - 12613411 - NOT quick and dirty.hpt
A standard approach will give you standard results.
My Tuning Software:
VVE Assistant [update for v1.5]
MAF Assistant
EOIT Assistant
Uh oh, did I screw that up? Let me look and see if...Originally Posted by Cringer
screenshot.08-02-2024 15.18.31.png
(difference between the two files, in the range where a N/A engine is actually capable of operating, and only in the Flow Rate table, the least important of the 4 tables)
So, nah. I'm good with what I did, on the fly, by hand.
Reply With Quote