I just got a Nelson tune on my y2k 4.8 silvy with just a magnaflow cat-back, and cai. First off, great guy to talk to, and very helpful.

But I have a coulpe questions for anyone that has one, did it seem to do anything right away? Does it get better as time/miles go up?

I only ask because after reading all of the "wow its so much better" responses on here I was expecting a bit of a difference right away. The only thing I have noticed so far is that it shifts a bit firmer, and the top speed limiter is gone... I did get the 93 tune, and 80% tq management removed. I do have about 200 miles on the tune now.

I just wanted someone elses thoughts before I bug allen about it.

Thanks a bunch!

 

Don't get discouraged. The PCM will have to learn some stuff. Give it some time. I had the 4.8 in my last truck and had feelings similar to you. Most guys are driving 5.3s and I think you can get a little more out of the tune for those trucks. Also I have heard that the gas you buy in the winter is not as "potent" as the gas you will be able to get after it warms up.

 

most nelson tunes will relearn in a short period of time. i say put at least 500 miles on it.

 

I am with 02Denali on this one, I think around 500 miles. This is were I see a difference.

 

Same here

 

I agree not that I have a Nelson tune but after 500 miles my Westers really woke up.

 

yeeeep, and are you sure he removed that much tq managment or did he bring it down to 80%.

 

Positive, I asked him specifically to remove 80% trans, and 100% engine

I will wait for a few hundered more miles, and see what happens, thanks a bunch guys

 

Let me know how that goes cause i went real light on my tq management in efforts to save my stock tranny!!! Pm me when you hit the 500 mark and let me know how well you tranny is still holding up so i can tell him to turn the juice up on mine a bit

 

I noticed a huge difference immediately. He actually tuned mine at the track, and without any learn time I gained .3 sec, and 3 mph at the track. I ran before his tune, pulled up and had him tune it, then drove straight to the staging lane. Nothing else changed inbetween the runs. I would be willing to bet that if you ran it before/after at the track you would be able to see the difference.

Aaron