JeremyNH
I'm Awesome
Hi all, Final mod to my 1998 GMC K1500 in progress. As per the title it's upgrading to a 4L80e. I picked up a 4L80e and transfer case from a 1999 K2500 with a 5.7L which rotted out at 119k for a good price. Just in case the transmission is being rebuilt pro while I'm doing the transfer case. The shop will perform the swap including drive shafts, cooling lines, and wire but they don't do tuning. My prior mods are a marine intake and cam, coil-per-cylinder with the necessary 411pcm, 1.6 stamped rockers with beehives, and a few other minor things. End dyno pulls marginally better than a LQ4 throughout the rpm range but runs out of breath at about 4800rpm so the LQ4 beats on peak HP. Point is that for everyday driving it should perform about the same within the shift range. I have HP Tuners and pulled a stock tune for a 2000 Silverado/Lq4/4L80e 4x4 from the repository (I pulled three actually just to verify that they are all consistent and they are). All I need do is select 4L80e from the drop down and copy all the tables into my existing tune, right? I'm not a tuner (obviously) but got the program primarily to have a working tune to reflash a new pcm should mine fail given that with all the changes made getting her running again wouldn't be easy. I also had to fix the warm-up performance/OLAs given that the tuner I paid to do the conversion and dyno tune strangely left them stock LM7 so it ran poorly for the first two minutes following a cold start.
But to repeat my one question: in HP Tuners just select 4L80e and copy over all of the tables, right?
But to repeat my one question: in HP Tuners just select 4L80e and copy over all of the tables, right?