IS200t tune
I may pick one up later not sure. I’m starting to save money up to toy with my Mazdaspeed 3 so that may scratch my itch and I will leave the IS alone for the most part. Or if I get that car around 300WHP it may make me want more power in the IS. Won’t know till I get there.

According to Terry Burger of BMS
Stage1->JB4 upgrade kit. The main addition is a CANbus-OBDII cable which allows the tuner to go from reading boost only to reading virtually every sensor on the vehicle.
A couple quick benefits-
1) Tuning based on engine speed, gas pedal position, intake temperatures, and many other factors allowing smoother & stronger mapping.
2) Boost by speed settings (would prefer boost by gear, but I haven't figured out how to read gear yet from the transmission), which allows you to lower the boost added at lower speeds improving traction.
3) Full data logging, lets you keep an eye on how your engine is running, using a BMS data cable or wirelessly via the JB4 Mobile bluetooth adapter.
4) More robust safety systems that make running higher boost levels safer like having the tuner automatically disable itself if air/fuel leans out, if too much timing is pulled, if internal EGT calculations get too aggressive, if oil/water is not warm enough to safely run higher power levels, etc.
5) User definable boost curve by RPM allowing you to tailor the performance to your specific taste.
6) Lots of extra input/output on the JB4 board itself which will be useful for water/meth integration and future expansion.
Last edited by Sheddy; Apr 12, 2018 at 12:23 PM.
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Dyno = testing the car to see how much horsepower is put out to the wheels





