Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - Loss of power, alot....
View Single Post
  #7 (permalink)  
Old 10-24-2012, 07:11 PM
techinspector1's Avatar
techinspector1 techinspector1 is online now
Last wiki edit: DynoSim combinations Last photo:
Join Date: Oct 2005
Location: Zephyrhills, Florida, USA
Age: 75
Posts: 15,461
Wiki Edits: 326

Thanks: 1,546
Thanked 2,078 Times in 1,607 Posts
Originally Posted by S10 Racer View Post
Thats a typical problem with the old glasspacks. The back pressure they cause (somewhere around 15-18psi) is robbing power from the motor. A good quality muffler like Magna Flow, Walker Ultra Flow, Thermal, A'PEX, Borla, etc. are good low back pressure mufflers. Any of these will only cause about 1-2psi back pressure. It's not the tuning, it's in your mufflers.
Please show your references for these data. I'd be very interested in reading it.
Reply With Quote