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Test pipes threw a CEL with CEL fix

Originally Posted by 370Zebruh ... Heard its bad to run bolt ons without a tune because it can cause the engine to run lean but all I have are the

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Old 01-05-2019, 10:00 AM   #3 (permalink)
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Quote:
Originally Posted by 370Zebruh View Post
... Heard its bad to run bolt ons without a tune because it can cause the engine to run lean but all I have are the test pipes everything else is stock.
For minor mods, the ECM will adapt.

Intake mods only - no tune required.
Exhaust mods only - no tune required.
Intake + exhaust mods - tune required.

If the test pipes are going to be your only mod, go ahead and get a tune (not because of the mod but to get max performance). If you plan on making more mods, wait on the tune.


Edit: The O2 sensor may have been damaged during the test pipes install - especially if power tools were used on the nuts/bolts. They aren't very rugged.
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