Vit's FI TT 370Z Lives!

VitViper

"Proactive" instead of "reactive" I guess would be a good way of putting it. If you (tuner) put in the right settings, the ECU knows where the limit it, and just won't let you get there.


Got off the dyno today and got 80% of the work done. Turns out the bank 2 cam position sensor is indeed bad (my stock ECU has been hitting limp mode from time to time without throwing a CEL -- when I scanned the ECU last it was a pending bank2 camshaft position code), the MoTeC picked up on it soon as the sensor went on the fritz (it's been intermittent). I have a new sensor but left it at the house -- doh!.

You can see where it goes low and then goes REALLY low and gets stuck there, lol.

http://blog.vittuned.com/wp-content/...c/cam_code.png

The POS chinese fuel pump finally took a crap, loses all fuel pressure past 7psi at high rpm.

http://blog.vittuned.com/wp-content/...ssure_drop.png

Nice to be able to log and catch all this and build in failsafes for it. For you guys on the stock ecu -- all the 300/320/340 pumps are made in China. Used countless ones now, they are extremely hit or miss. Watch out.

Knock detection works.
http://blog.vittuned.com/wp-content/...nock_logic.png


All in all, got what I needed to test tested. Went very smooth -- I stopped at about 510whp on pump gas, and I made this on a very conservative timing and cutting the run short (6900-7000 rpm) due to the cam sensor & fuel pump. Within about 20-30hp of where I ran it when I initially tuned it -- about what I'd expect for the 40-45* celcius IAT's in my 100* shop today vs the 20* celcius IAT's I had in the dead of winter when I tuned it originally (anyone questioning whether this helps make power -- absolutely, want big numbers, tune when it's cold, the SAE correction factor isn't every going to make up for the fact the motor makes significantly better power when it's cold and not knock limited by the hotter charge temps lol).

But will it shoot fire?

Yes, soon as the sun goes down, lol

https://www.facebook.com/vittuned/vi...9134603631539/