Lighter = Faster (N/A build thread #2)

infernosg · 08-31-2017, 03:28 PM

I'm not sure how to embed videos from Google Photos. Does this link work: https://photos.google.com/share/AF1Q...I3akVubllYdE1R?

Sorry for the noise. The fan had just kicked on. It's idling around 1000 RPM. Anything less and it gets a little rough/unstable. It's quieter than I expected, but I haven't taken it much over 3500 RPM or about 10% throttle. Tuning is turning out to be difficult. No-load idle is pretty much sorted out to 4000 RPM. Tuning under load on the road is painful. Going from no load to load is requiring a massive increase in fuel due to the large changes in incoming air volume associated with small throttle movements. I assume this is handled by transient throttle adjustments but I read not to mess with that until the base fuel map is sorted. This would be much easier on a dyno. Any advice is welcome!

08-31-2017, 03:28 PM	#11
infernosg IT'S ALIVE! Join Date: Dec 2009 Location: Richmond, VA Posts: 811 Rep Power: 16	I'm not sure how to embed videos from Google Photos. Does this link work: https://photos.google.com/share/AF1Q...I3akVubllYdE1R? Sorry for the noise. The fan had just kicked on. It's idling around 1000 RPM. Anything less and it gets a little rough/unstable. It's quieter than I expected, but I haven't taken it much over 3500 RPM or about 10% throttle. Tuning is turning out to be difficult. No-load idle is pretty much sorted out to 4000 RPM. Tuning under load on the road is painful. Going from no load to load is requiring a massive increase in fuel due to the large changes in incoming air volume associated with small throttle movements. I assume this is handled by transient throttle adjustments but I read not to mess with that until the base fuel map is sorted. This would be much easier on a dyno. Any advice is welcome! __________________ '86 Mazda RX-7 Base '79 Mazda RX-7 GS