Banks Speedbrake on a Duramax

stay away killerbee. he's the biggest hack and scam artist out there.

JIMNLIN wrote:
The Banks Speedbrake is just a software package that allows for more aggressive grade braking performance from the VVT just like the newer Dmax/A has.

Good info in the clicky and also Killerbeeperformance also has a same type turbo grade braking performance tune that is popular with lots of GM folks who need more.

Huh I agree, nice link there. I agree though I'd skip the Gale Banks and go to killerbee or that link, but again this is the Internet so I'm not positive about the information on the DMAX forum. Sounds logical though.

The Banks Speedbrake is just a software package that allows for more aggressive grade braking performance from the VVT just like the newer Dmax/A has.

Good info in the clicky and also Killerbeeperformance also has a same type turbo grade braking performance tune that is popular with lots of GM folks who need more.

Never mind the Banks Speedbrake. Check out this post on Duramax Forum and do it your self! Click Here Works on LMM too!

Thanks Mark...that makes sense. Always trying to learn.

downtheroad wrote:
Just wondering why you want to go with a Banks Speedbrake on your 08 Duramax. Why not just use Tow Haul and the Grade Braking feature.
It sure works great for me.

Needs a little more with 15,500#s pushing. New models have them as oem. GCW is 23,400.

Mark

Just wondering why you want to go with a Banks Speedbrake on your 08 Duramax. Why not just use Tow Haul and the Grade Braking feature.
It sure works great for me.

My buddy had one in an 04 or 05 dmax. He didn't like it he said it would downshift and the engine would over rev going down the hill. He took it out after calling banks a few times.