View Single Post
Old 12-05-2014, 10:14 AM   #20
Jim's ZL1
 
Drives: 2013 ZL1 Camaro with 750HP
Join Date: Nov 2013
Location: Georgia
Posts: 34
This may explain why I only got 146.5 MPH at the half mile run.
When they put the KOOKS headers on them and used the stander high flow catalytic converters and not the HIGH FLOW GREEN CATS.I have ordered the new cats and then it will be off to the tuner to see what the new numbers will be.
Attached Images
  
Jim's ZL1 is offline   Reply With Quote