b16a2 Tuned Afr ideal.

vtec should be set at idle for max performance and the revlimit at 5000rpm, because most engines go kaboom if the vtec powerband is extended for more then 4000rpm.
OP don't be fooled by what other people try to trick you to do
If you do not know Do not point wrong.
other topics of the forum reviewed the idle AFR: 14.7 I have read that.
Thank you anyway.
VTEC crossover 5600 - 5900 rpm (depends on where your engine performs best, find the rpm that has smoothest engagement point with no hesitation or big jump)
Rev limit - 8100 rpm
Idle AFR - 14.7 - 15.5
Wide open throttle AFR - 12.75 - 13.5 (also depends on where your engine performs best)
A dyno or good street tune with datalog will be a better way to find where your engine performs at it's best. For both AFR and RPM crossover points.
Rev limit - 8100 rpm
Idle AFR - 14.7 - 15.5
Wide open throttle AFR - 12.75 - 13.5 (also depends on where your engine performs best)
A dyno or good street tune with datalog will be a better way to find where your engine performs at it's best. For both AFR and RPM crossover points.
Thanks for the information you provide.
VTEC point 5900 using current setting.
afr at idle you say you want to set mine up to the poor.
Can you look at the comments in my hand the current output of the dyno?
VTEC point 5900 using current setting.
afr at idle you say you want to set mine up to the poor.
Can you look at the comments in my hand the current output of the dyno?
If poor = leaner, than yes, that is what I am saying. A lean idle is OK, your engine doesn't need 13:1 AFR at idle. It really only needs enough to keep it running. While at the same time keeping it from detonating (going too lean)
If your engine is making power above 8000rpm you would want set your rev limit higher. However, I didn't see anywhere in your build that you have done any work to the valve train or block. You might want it to be around the 8500 rpm range with a stock valve train and rod bolts.
From what I can see your dyno looks pretty smooth. Have you tried different changing the AFR's and timing to see if it will make any difference?
If your engine is making power above 8000rpm you would want set your rev limit higher. However, I didn't see anywhere in your build that you have done any work to the valve train or block. You might want it to be around the 8500 rpm range with a stock valve train and rod bolts.
From what I can see your dyno looks pretty smooth. Have you tried different changing the AFR's and timing to see if it will make any difference?
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VTEC crossover 5600 - 5900 rpm (depends on where your engine performs best, find the rpm that has smoothest engagement point with no hesitation or big jump)
Rev limit - 8100 rpm
Idle AFR - 14.7 - 15.5
Wide open throttle AFR - 12.75 - 13.5 (also depends on where your engine performs best)
A dyno or good street tune with datalog will be a better way to find where your engine performs at it's best. For both AFR and RPM crossover points.
Rev limit - 8100 rpm
Idle AFR - 14.7 - 15.5
Wide open throttle AFR - 12.75 - 13.5 (also depends on where your engine performs best)
A dyno or good street tune with datalog will be a better way to find where your engine performs at it's best. For both AFR and RPM crossover points.

for real... OP the above is good info!
Here is my vehicle that I modified the list and dyno.
B16a2
Skunk2 Pro Intake
thortle body ctr
Simota Carbon big tube
Mugen 4-1 2.25 "headers
2.5 "ex-pipe 2.5" exhaust apex
exedy stage 2 clutch
apex power fc commander
AEM wideband
1-The first original map with the b16b

2-the original version of a map made with that in multiple 12.5-12.7 afr
between 5500 rpm and 85000 rpm, just fixed it.
B16a2
Skunk2 Pro Intake
thortle body ctr
Simota Carbon big tube
Mugen 4-1 2.25 "headers
2.5 "ex-pipe 2.5" exhaust apex
exedy stage 2 clutch
apex power fc commander
AEM wideband
1-The first original map with the b16b

2-the original version of a map made with that in multiple 12.5-12.7 afr
between 5500 rpm and 85000 rpm, just fixed it.
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iphatcrxi
Honda CRX / EF Civic (1988 - 1991)
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