Rutager, are you familiar with tuning via “left foot dyno?” It’s the most efficient and effective way of getting your VE table nailed down without an actual dyno…
I’ll post it even if you are familiar so it’s here for others… this is not my invention; taught to me by Jamie (JPNovak)…
-Find a stretch of road that will be free of traffic where you can turn around. 1/2 mile is fine, probably less
-open up your computer and TS and go to VE analyze live and in the advanced tab, change the “Cell Change Resistance” to “easy” and click “Start AutoTune”
-select the cells on your VE table around idle and right click and select “lock cells” so that TunerStudio doesn’t mess with your idle.
-you’re going to run through each of the rpm columns in TunerStudio at the bottom of your table starting at 2000 or so
-for rpm’s under 3k or so, you’ll want to be in 3rd or 4th gear, for rpm’s above 3k or so you’ll want to be in 2nd gear.
-With your left foot resting on the brake, use the accelerator pedal to bring the car to the desired rpm and then use the brake to hold it there as you continue to press the accelerator pedal all the way to 100% tps or your max kpa value. Once you hit 100% tps you can stop, turn around and do it again but for the next rpm column. After each column click “Send” and “Burn”
-it will take some getting used to- braking, accelerating, watching TunerStudio, and steering but you’ll figure it out. Open or secluded roads help.
-Run through the entire rpm range all the way past redline (you may have to set your redline in TunerStudio higher, or on your MSD if you’re running one)
-You’re basically simulating having the car on a dyno and loading the engine at a particular rpm so that every cell in your VE table gets hit and TunerStudio can make adjustments to the cells to match your AFR table.
-Once you’ve completed one or two runs through the columns with “Cell Change Resistance” on “easy” switch it to “Normal” and do it all over again, then to “Hard” and again.
-at this point you should have a table that is only changing by tiny amounts indicating that it’s really spot-on.
You should notice immediate and consistent improvements. Be aware that you may boil your brake fluid and all of a sudden find mushy brakes- just let it cool and you’ll be fine.
You can then go into the new VE table and start smoothing it out and refining it for acceleration enrichment, idle or any other characteristic you want like fire-spitting on sudden decel
