Calibrating computer after fitting 725cc injectors
 

Just bought a 2016 370z Nismo which has had a Stillen supercharger kit fitted along with 725cc injectors and ECUtek remap etc

During the drive home Car averaged 20MPG however average on dashboard is 9MPG

Is this because the installer/tuner hasn’t recalibrated the computer etc

If so is it possible to recalibrate or do I need to return to tuner?

Best way to calculate is from full tank down to gas light then when refilling see how much gas it take and divide the mileage ...the stock display won’t read accurate to even consider using ......and of course mileage will depend on how you drive ...more boost less miles ..less boost more miles

Hello, ecutek tuner here. It is likely your tuner has altered the value of the fuel consumption meter calibration value. Either this value needs additional adjustment or you can try putting it back to stock to see if the MPG will show more accurate. I've done a few vehicles with larger injectors where I've left that value alone and when all the other settings were in place the estimated MPG appears quite accurately.

Larger injectors would have shown an INCREASE in MPG with no other changes.

with certain calibrations/software yes. But not always

i didn't know that! maybe that's why when i installed supercharger into my car...my MPG went up xD
man... i should get 5000cc injectors hahaha jk