Air Fuel Ratio on C16
11-09-06, 12:14 AM
#26
Originally Posted by enzo250
So in the end if you want a properly tuned ignition map your going to need a dyno.
11-09-06, 07:20 AM
#27
Originally Posted by crispeed
Yep and one that has eddy current and one that can show actual horsepower during steady state operation!
engine dyno will do also...
11-09-06, 08:37 PM
#29
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Crispeed is right. (As allways.
). For a racecar, tune towards 12:1, thats's what I tune my car to. For a streetcar be a little more conservative closer to 11.5 or so. Just my 2cents.
). For a racecar, tune towards 12:1, thats's what I tune my car to. For a streetcar be a little more conservative closer to 11.5 or so. Just my 2cents.
11-10-06, 07:55 AM
#31
Stay tuned...
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Thanks for everyone's help with the tuning tips. After reading these posts from experienced tuners, I feel much safer running high 11s on C16. Last night I made 560HP (SAE corrected) on a low 11sec AF Ratio on C16@26psi. Before going on the dyno I tuned the car on the street to 15psi on pump gas and made sure the low boost areas did not have too much fuel. As boost started (5psi) it was in the high 12s and gradually got richer. I then added the C16 and went on the dyno and tuned it to a 11.1-11.2 AF ratio but will lean it out more when I make a pass at the track and datalog everything.
Here's another thread on how that street tuning session went
https://www.rx7club.com/racing-kills-lounge-10/got-absolutely-destroyed-595280/
On a side note, I was able to see Enzo tune a friends car on his dynodynamics dyno and now I see the difference. He demonstrated how the dyno holds the rpm at a set limit and you can tune each fuel cell/bar. It's amazing, no need for street tuning/tweaking if you have one of these since it loads the car up for you. I think I might get one for Christmas
Thanks again all.
Anthony
Here's another thread on how that street tuning session went
https://www.rx7club.com/racing-kills-lounge-10/got-absolutely-destroyed-595280/
On a side note, I was able to see Enzo tune a friends car on his dynodynamics dyno and now I see the difference. He demonstrated how the dyno holds the rpm at a set limit and you can tune each fuel cell/bar. It's amazing, no need for street tuning/tweaking if you have one of these since it loads the car up for you. I think I might get one for Christmas
Thanks again all.
Anthony
11-11-06, 01:45 PM
#35
Stay tuned...
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Originally Posted by crispeed
Hey Anthony what is a low 11sec AF ratio?
That's just to make sure you guys are paying attention!!! You and Enzo both pass!Anthony
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