View Single Post
Old 08-12-2016, 08:28 PM   #54 (permalink)
rmay635703
home of the odd vehicles
 
rmay635703's Avatar
 
Join Date: Jun 2008
Location: Somewhere in WI
Posts: 3,691

Silver - '10 Chevy Cobalt XFE
Thanks: 450
Thanked 800 Times in 602 Posts
Quote:
Originally Posted by RCB View Post
Man, not to be a naysayer, but yes it does in most cases. It's been well documented. They've been used extensively in the RV aftermarket for years for just that reason. Have a 100ft lbs more off idle has proven results. Essentially you are artificially increasing compression.

Just like building an engine, selecting a supercharger is all about what you want. Roots style blowers are perfect for trucks and usually add fuel efficiency. Again, not dramatic, but at 7mpg, a bump of 2 would be huge
For his circumstance this sounds like bad advice.

If he had a 2 liter engine and was already turbo'd with a load maybe, but that isn't the circumstance
  Reply With Quote