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Posted 18 June 2019 - 04:20 AM
If i'm running Catless downpipe with this o2 defouler (no check engine light)
do I still need to upgrade injectors?
my car is all stock 2018 gtr, and my plan is to run 3'' catless dp and 4'' full straight pipe.
no other planned future mods
Edited by stvegtr, 18 June 2019 - 04:53 AM.
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