8.1 4l85e

[1970ss8.1]

There is a ton of torque management. If you have a stick I would remove all of it. They are horribly de tuned. I removed a lot in my truck but keep some because it is my DD. My chevelle though has a T56 and I removed all of it. If I give it half throttle at 40 it will break the tires loose. Still trying to figure out how to drive this thing. So far only made to 4000 rpm and 4th gear. Still tuning, but the way I geared the car I can do 75mph at 1200 rpm in 6th and can idle at 55 in 5th. I?ll try to upload video.

[1970ss8.1]

https://youtu.be/_4pcT2mgQ7c

[cj599]

give my channel a subscribe i have a bbc 86 camaro i been building
nice

[cj599]

soon as i get the hp set up soon ill post the stock file

[cj599]

id like too see a dyno pull of one with the tq management vs with out be interesting too see how much gm pulled out of these sleeping giants

[496burb]

I got everything setup and running. I corrected the speedo for my larger tires. Then made a few recordings, getting almost 4 degrees of spark retard at wot. There quite a bit to all this unless I'm just over thinking it. My background is diesel engines so playing with gas is a bit different for me. Time to research lol.

[Jay2one]

I just had another member PM me and I built him a ready to go tune for $100, because he bought his own license and will do his own data logging. If interested PM me and I can do the same for you. I would need your stock tune, They made changes to the tune every year so you cant just load any random tune.

1970ss8.1 Are you still writing tunes?

Edit: I see he hasn't logged in 5 months...

[xx_ed_xx]

1970ss8.1 Are you still writing tunes?

Edit: I see he hasn't logged in 5 months...

What are you needing?

[Jay2one]

What are you needing?

Just looking to see if he was still doing tunes. My friend has been playing around with HP tuners on my 2002 2500 Avalanche. (He's not a seasoned tuner) Just playing with some timing and some torque management. I'm not familiar with that stuff. I run Holley EFI on my boat and Mustang custom builds which doesn't have the factory de-tuning features. And usually on a dyno. I really don't know safe parameters on my 8.1 (AFR's, mid cruise lean AFR target, Timing graph and TQ management). It's pretty sad when I have a 496 cu/in engine and can't turn the tires over or has to downshift for an incline. (3.73's) Just looking for more towing power (boat 11,000 lbs) and some pep.

[xx_ed_xx]

Just looking to see if he was still doing tunes. My friend has been playing around with HP tuners on my 2002 2500 Avalanche. (He's not a seasoned tuner) Just playing with some timing and some torque management. I'm not familiar with that stuff. I run Holley EFI on my boat and Mustang custom builds which doesn't have the factory de-tuning features. And usually on a dyno. I really don't know safe parameters on my 8.1 (AFR's, mid cruise lean AFR target, Timing graph and TQ management). It's pretty sad when I have a 496 cu/in engine and can't turn the tires over or has to downshift for an incline. (3.73's) Just looking for more towing power (boat 11,000 lbs) and some pep.

Yup i removed a suburban 8.1 and 4l80e and put it in a 1500 amazing what losing 3000 lbs of weight will do to drivability.

[Jay2one]

Yup i removed a suburban 8.1 and 4l80e and put it in a 1500 amazing what losing 3000 lbs of weight will do to drivability.

My Avalanche is only 1300 still pathetic for a 496. lol

[RootBreaker]

1970ss8.1 Are you still writing tunes?

Edit: I see he hasn't logged in 5 months...

crap, i have enjoyed this thread as well and it seems he is very knowledgeable and I wanted to pick his brain...
my 78 k20 trailering special with an 02 8.1L

caught it on fire though... got to get back to it...
https://youtu.be/8jSizl9Y8ZU


ran so great when running but choked on itself when it warmed up.
also think the guy that did the hot tune messed with dbw throttle cuz i barely hit the throttle and i cannot prevent the tires from spinning... sm465 manual trans too