View Single Post
  #19 (permalink)  
Old 10-07-2016, 07:47 AM
moore_rb's Avatar
moore_rb moore_rb is offline
CC Member
Visit my Photo Gallery

 
Join Date: Aug 2015
Cobra Make, Engine: All original, with Chevy engine since 1964
Posts: 996
Not Ranked     
Default

Quote:
Originally Posted by C5GTO View Post

Question for you guys who know about the signs of a lean condition. Do you think this evidence is showing it? My conservative side says I should get the computer re-tuned. It would also be nice to understand the HP gain purely from muffler replacement.

I wouldn't necessarily use the blue coloration on the pipes as a sign that you are leaning out too much - mild steel alloys can begin bluing as low as 650 degrees F, and your exhaust gases are running nearly double that.

Still - If I were in your shoes, and if I had the funds, I'd probably be thinking the same way you are, and would be booking a session with my dyno-tuner...

I'd also pull the 4 corner plugs, and look for bright white insulators, glazing, or the little pepper flecks that might indicate detonation.

I knew you would love the performance gain. How about the sound and volume levels? Did they meet up with your expectations as well?
__________________
- Robert
Reply With Quote