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Old 04-08-2020, 12:30 PM   #21
PROMETHEUS

 
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Drives: 2019 ZL-1, Shadow Gray, Sold
Join Date: Jan 2019
Location: Fredericksburg, VA
Posts: 1,390
The Roto-Fab is a placebo.....IMHO, unless you get a tune. A lot of folks swear at the improved HP, most of which is "seat of the pants" dyno. Not knocking anyone, who owns one and would highly recommend a CAI if you are doing any other mods which require a tune. However, you should be feeling some difference with the TB. I don't know of anyone who hasn't had a positive experience with it.
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