I still Just can't figure it out

[01RedLightning]

When I have my slicks on I can not punch it. The truck acts like it is hitting the rev limiter (but it's not even at 3,000 RPM) Then when I take the slicks off the only way to fix it is to re-install my tune. I tried changing the tire revs per mile,(from 733 to 720) as a member suggested didn't work any other suggestions? Oh the Slicks measure 28/10/16R

 

[lightninmike]

race tune a little funked up compared to your street tune?

 

[1slowtruck]

+1 on the tuner see if there are any codes.

 

[ChrisNelson]

race tune a little funked up compared to your street tune?

^ What he said ^ :shrug:

 

[01RedLightning]

no I just use the stock predator tunes, my truck is back to stock (i Broke my 6# lower pulley but it did it with the 6# and stock pulley tunes.) But when I put the slicks on is the only problem

 

[ChrisNelson]

Have you watched where in the rpm's it is when it shifts?

 

[01RedLightning]

it's not at the shift point that it cuts out, it's at any speed or launch once I get above three grand it stutters

 

[lightninmike]

but your ok with street tires????

 

[Dusten]

That makes no sense. Not denying it is happening, but it makes no sense.

 

[Illtaketwlight]

maybe the ABS

 

[Dusten]

I was thinking ABS, but these trucks dont have traction control.

 

[02SILVERBULLET]

my guess is that the load diffeence, causes boost to come in diferently and its running lean or pinging, my wide band seems to show a full number leaner diference on the slicks over street tires street tires 10to1 vs 11to1 slicks and yes i know i need a dyno tune as its way too rich. lol