Whipple Supercharger

[netrogue]

I have the supercharger installed. It was installed prior to me purchasing the Hummer. It looks as if it has the stock air filter. Any input on changing it out? If so, what should I put in?

 

[Scarsman]

My own personal opinion is that the stock filter is an awesome filter. I read a thread on a duramax forum where they did an actual lab comparison between the stock GM filter and a whole bunch of aftermarket hi-flow filters. The stock GM filter filtered better and lasted longer, and provided more than enough flow for what the motor demanded. I'll try and find it. It was a good read.

 

[Scarsman]

Here it is! It is a bit of a long read, but well worth it. http://home.roadrunner.com/~jbplock/ISO5011/SPICER.htm

 

[M22KLARS]

Brodie or Hunner or someone had done similar tests or found a similar article... Can't exactly remember but I do remember that the stock GM filter was the best.