im wondering whats the best way to read in wideband data to freescan for datalogging. are there any unused parameters i can tap it into?

ive found some mentionings of the A/C pressure being the correct voltage.

if i go that route does that basically mean i just cant use A/C while im datalogging?

I use an innovate lc-1 and datamaster to log/tune my setup with. You can add it as a custom parameter and convert the analog output directly to afr.

thanks for the reply. so lets say i have an AEM gauge... am i going to need to get datamaster (for the custom parameter) to log AFR through the PCM or can i make it work with freescan?

If you know any of the dudes who used to hang around here who would mod freescan you can do it with freescan. The reason they didnt intergrate that into it is the analogue outputs of the wideband controllers tend to go back to different outputs at different voltages. So what works for one controller wouldnt work for the next. I already had datamaster so it was a no brainer. Maybe try emailing them and see if they'll fix you up with a modified version.

ok ill see what i can find, but do think datamaster is worth the money in functionality over freescan? Im going to be logging/tuning alot so ill spend a bit to make it easier on me.

The price for datamaster is a little steep imo for what you get, but it will save you a world of time to be able to watch the data stream vs scrolling for hours in excell with freescan. I think the akm cables guy is a reseller and can get you a better deal than directly from tts though.

I log a great deal of stuff and overall i prefer datamaster because its quicker to review, I still do use freescan though from time to time to track down a specific problem or kink i'm trying to work out.

Using a wideband and tracking it in datamaster is the best thing since sliced bread imo for WOT tuning. I have made multiple runs at the drag strip for test and tune to get my a/f lined out and my trap speeds as high as possible.

I first tune my car in speed density using ve master, after i get that nailed down i turn the maf back on and adjust those tables until closed loop comes around, then i refine my timing tables at cruise speeds. After that just use your wideband to get wot nailed down, and you're done.

The first two you can do with freescan if you have time and patience. The last can be done on the dyno, but my best dyno tune, well i'll just say it was pretty far off from the car running down the track in the real world, I gave up hp on the dyno and gained 2mph, go figure.

that is exactly what i wanted to hear, thanks! I plan on doing a decent ammount of tuning so datamaster would probably be worth it for me. I'll wait a few days to see if i can get some more opinions.

Just one more question... are you logging AFR with a connection from the wideband directly to the laptop, or are you logging it through the PCM (tapped into something like the A/C pressure sensor)??

thanks youve been a big help, almost seems like im pioneering my way through this in comparison to working on LS1s.

Yup, I tap right into the ac pressure line and configure the data witha conversion factor. Your ac wont function while this is going on but you shouldnt be logging with a/c on anyways . Theres a writeup on how to configure it with the lc-1 unit on here somewhere including how to figure out your conversion factory.

cool thanks dude