Osiris Tune

[westpak]

Well it has been a while since I got the Xterra and have been too wrapped up in my other Nissan projects but finally got something to start with. It is Osiris from Uprev to tune the stock ECU and since it would take a new MAF and some serious tuning to use the Osiris software to tune my heavily modified 350Z so we gave it a try on the Xterra.

The Xterra is a 2007 completely stock with 22k miles. Below is a comparison of the first pull on stock ECU to the Osiris tuned map. The stock ECU was running extremely rich as you can see down almost to 10 AFR, it was then tuned to bring it up close to 13 afr and it gained 12 ft-lbs of torque and 9 hp. The top lines in each of the three readings are the final run results.

Best of all is that the gains were across the entire rpm range not just peak. This was an initial attempt as they just got the software and will go back to fine tune or after some mods? maybe exhaust and intake?

[QShip]

I use the software on my blown Titan.