My $59 problems/tuning a turbo camaro

[fasteddi]

Does anyone know of a AFR correction program that works with a $59 bin?? Im lost at how to make up a formula for afr tuning. I was good at using the BLM's in Excel before for part throttle in the $88 mask. But I dont know what the easiest way to use my AFR readings to change my VE values is.... Thanks for any tips! Tommorow gonna be a nice day, and no work...so lots of tuning hopefully!

[dave w]

Does anyone know of a AFR correction program that works with a $59 bin?? Im lost at how to make up a formula for afr tuning. I was good at using the BLM's in Excel before for part throttle in the $88 mask. But I dont know what the easiest way to use my AFR readings to change my VE values is.... Thanks for any tips! Tommorow gonna be a nice day, and no work...so lots of tuning hopefully!

You should be able to use Air Fuel Ratio 14.7 instead of BLM 128.
Here are some examples:
AFR = 15.7 So the correction will be 15.7/14.7 = 1.068 to make the VE Table Value Richer
AFR = 13.7 So the correction will be 13.7/14.7 = 0.932 to lean the VE Table Value

dave w

[fasteddi]

Ok thanks dave. I though it might be somthing like that. So if say i was tuning a certain boost level , and I wanted 11.7 AFR and i was getting 12.2 on the datalog then i would..... 12.2/11.7= .956 then use that as a multiplier for the VE cell to lean out the condition for that cell.

[dave w]

Ok thanks dave. I though it might be somthing like that. So if say i was tuning a certain boost level , and I wanted 11.7 AFR and i was getting 12.2 on the datalog then i would..... 12.2/11.7= .956 then use that as a multiplier for the VE cell to lean out the condition for that cell.

Yes, that math will work.

Not to cause confusion, 12.2 is a leaner AFR than 11.7. The math above should be 12.2/11.7 = 1.043. So multiplying VE Cell times 1.043 will make the AFR Richer from 12.2 to 11.7.

dave w

[Six_Shooter]

Don't like the $59 autotune excel sheets?

I haven't used it, since I needed to add a plug in, way back when I tried it, then just got used to tuning manualy.

Get the Ostrich, it will make this tuning go a LOT quicker. ;)

[fasteddi]

Don't like the $59 autotune excel sheets?

I haven't used it, since I needed to add a plug in, way back when I tried it, then just got used to tuning manualy.

Get the Ostrich, it will make this tuning go a LOT quicker. ;)

Yea ive burnt a good 15 chips so far today and am still not happy.. mabet 15 more and i will be..

I though the autotune was for TP V4??

[fasteddi]

Part throttle tuning is ok, idle is good. Heres a video 25 chips later....




Max throttle 90% on one pull, max boost 9.5psi, arfs ok(need to still take a little fuel out in some areas) spark knock is only present in a few cells with less then 1* of retard. I will get rid of that knock although im almost certain that its from a rich condition since that was the issue earlier today.

Enjoy the video and the comentary, I do think I might be able to make a 14 second pass come spring. I can only go so fast on these country roads, its hard to find flat ones....

http://www.youtube.com/watch?v=rA7Afatc3NY