Re-tune after major exhuast change ?
12-04-2008, 04:20 PM
#1
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Re-tune after major exhuast change ? LS1 tuned and dynoed with headers and magnafow cat back system.
Now the LS1 has two race mufflers directly off headers.
I think it would need to be retuned or at least adj. the air/fuel
mixture. Any opinions and or experiances would be appreciated.
Now the LS1 has two race mufflers directly off headers.
I think it would need to be retuned or at least adj. the air/fuel
mixture. Any opinions and or experiances would be appreciated.
12-04-2008, 04:37 PM
#2
If it is a freer flowing sytem, then it will lean out. If it is more restrictive it will richen up. This is from my experience. How much depends on the application, I would at least have it verified. It should be leaner by a hair.
