If I drive my L like normal for a while and stomp the pedal, around 5000 rpm's my truck cuts out. Only for a second and then shifts to 2nd.
I don't get it, it's like it loads up.
I have a Diablo, which I get worse gas mileage from.(in any driving situation)

I just recently cut some holes in the bottom of my airbox.

This just started.

 

Have you bypassed or pulled the SCM bypass?

 

What do you mean by diablo? Chip or Car? I was just wanting to see if you had a Lamborghini or not, that would be awesome, sorry I didnt answer your question!

 

I have the chip, not the car.
Besides the chip and the bottom cut airbox, I have not any other mods.