oh snap! Never mind I kinda had the same problem and only at 300whp. Had to do all my pulls in 4th gear, now with the LSD I can do 3rd without a hiccup. I can't even imagine how it might feel with the powa ur putting down, I'm sure an LSD my just let u do pulls in 4th gear at the least.

P.S. ¿Oye pa' de donde eres?

 

I don't spin 4th except when my tires were worn out on 300 threadwear tires. Now I have 200 treadwear and I don't spin 4th.