should I uprev?

chuckd05

im pretty sure its worth it even if you have no mods for the other things it does for your car...

i have a valet map where it can not rev over 3500, a launch control map which i never use but its there (set at 4700 for track days with radials, dont use it though) , a dead map where the car wont start ( great for parking at suspect places ) or in stadium lots where you keep your key...

also throttle response is improved and im pretty sure there is power to be made even if your car is stock in the mid range area...

+1 to get the tune

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09 370Z 6M PW - FBO Best 1/4 mile = 12.926 @ 109 SOLD -- 08 BMW 135i - FBO 12.1@120mph SOLD -- white 09 e92 335 Coupe Mtech - 11.9 @ 119 :-)

franky2222

100% TRUE,,,,,,,i want the launch control map at 3000rpm wonder how much my tuner would charge to add that LOL

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08 G37s 6MT//UPREV//INJEN CAI//BERK HFC//20%//BATOVERLAYS//EIBACH//GTSPEC/

Mandingo

Thinking about getting Uprev also.
What do tuners use to measure the A/F ratio? Its not just the stock sensors right? Sorry if thats a dumb question

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some mods

ChipsWithDips

Depends on the tuner. The car has both narrowbands (to verify the cat works), and widebands (for fuel control) on each bank. So it is possible to tune based on the stock widebands. Often the dyno has it's own O2 that can be stuck into the tailpipe, or into a spare bung in the exhaust.
The narrowband can also be temporarily removed and the dyno's wideband put in it's place.

Mandingo

Makes sense. Thanks!

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some mods