JB4 Tuner for the Turbo SE

[GusRandall]

I've read some posts saying that it has a massive impact but am wondering if someone has a more detailed comp between it and stock. I was shocked how much turbo lag this thing has, even at speed and would like to address it.

 

[675430VME]

I've read some posts saying that it has a massive impact but am wondering if someone has a more detailed comp between it and stock. I was shocked how much turbo lag this thing has, even at speed and would like to address it.

JB4 won't help with turbo lag, modified ecm does.