Obs

Why isn?t there any support for the obs 96-99

Those trucks are supported, but it looks like not all those years per what the website says.

You can tune 98-00 OBS body style trucks.

Maybe the 96-97 use an unsupported computer.

https://www.hptuners.com/vehicles/

5FDP is correct there are slight variances in the black box. from 96-97 and 98-2000 even with support to the 98-2000 the black box is still very limited. Some without the ability to fail the maf. Obviously physically unplugging the 3 wire mass air is the ticket here. I highly suggest the 411 swap to anyone interested in gaining tuning access to their obs.

So i have a 96 k1500 and a 98. What is involved in doing a 411 swap? The 96 is a manual trans and the 98 is a parts truck auto

And o would prefer speed density over maf in it. I use it to pull trailer and work but i do like to do a little 4wheeling and maf dont like mudholes lol.

Contact lextech on gmfullsize.com email him your truck info. if you dont have or cant find his information. PM me and I can help get you his info.