Hey guys, looking into supercharging my 2015 6.2L 8 speed Sierra Denali. I am primarily looking at the Maggie or the Whipple. Having had a 2003 Cobra with a Maggie, I really like them. I like the way they are extremely quiet when not under boost.

The Whipples I have heard do have some whine/whistle when not under boost and at idle. Thoughts from those that have one?

I imagine they are both similar to install and fairly certain it's within my skill set to do so. Does anyone by any chance have a copy of the installation instructions for this truck for a Whipple or Maggie install? I have already emailed Magnusson and Whipple for an electronic copy but have not heard back yet.

Thanks and appreciate the time!

 

I'll be posting on the Whipple in a couple more weeks. Dyno and track times in the next month or so.

 

my whipple is really quiet. As in i cant even hear it.. even under boost i dont hear it.

 

Would love to see it when you're done.

 

Do you have any videos of it. would love to hear it.

 

Id say maggie
Worked really well on nnbs denalis and 6.2 maros

 

Maggie for sure. Unless whipple changed something they are even bigger heat pumps then the maggies.

 

here is my 2015 6.2 Denali

 

Just installed a new cam, converter and cold air.


Got marginal on fuel so I am installing a new pump and injectors next week.


Boost is 10.7 now and I plan on increasing boost at least 1psi.


Crazy sleeper truck

 

Like it!