Thread: When is a tune absolutely needed?
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Old 02-18-2013, 02:47 PM   #27 (permalink)
chrischhorn
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Quote:
Originally Posted by Sh0velMan View Post
The engine will go into a 'mode' where it dumps fuel in open loop mode, if you add too many breathing mods without a tune.

The Nismo intakes (that I have) are one mod that if you put it on without a tune, it'll just go full rich, 10.5:1 or whatever the low threshold is on our O2 sensors. Even with their MAF spacers (which are just like the ones AAM includes in their intakes).

Strange, but I think it's a protection mechanism.
Good to know, didn't know that.
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