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I didn't watch all vids, but the first vids showed JRSc system and says it added 40 whp? that's not right, what I experienced was definitely more than that on CARB tune with complete stock header/exhaust. They did mention high elevation so maybe that's the reason for the smaller improvement they were seeing?
Now at this level the acceleration is near that of flat 6 cayman s, up from being beaten by minivans, i cannot imaging it's just a little step up from "tunes" over regular gas pumps.
There are a lot of usable power between 4500-7000 rpm. Downshift if you don't feel you have power. With this arrangement you are able to continue accelerate at high speed. This is designed for road racing. There are other systems that will provide more power low down.
There are still significant gain at lower rpm starting at 2000rpm. I am using a gear higher regularly for easy driving and for keeping noise down
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2013 FRS - JRSC CARB
"Use all of the track" they say
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