10-07-2016, 08:47 AM
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CC Member
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Join Date: Aug 2015
Cobra Make, Engine: All original, with Chevy engine since 1964
Posts: 996
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Quote:
Originally Posted by C5GTO
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.
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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?
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- Robert
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