AL Cx5
2024 CX-5, Prem, Turbo, Tuned, Forged Wheels
I'm working with DRT tuning our '24 CX 5 Turbo. I understand, DRT is an accomplished tuner. I have confidence in his tune for upping the power a bit for our DD CX-5.
I've been "reading" spark plugs on drag racing motors to confirm the O2 sensors AFR, timing, knock and heat range. We compare this to our O2 AFRs, timing and such. We have an EGT per cylinder to compare as well. We can tune each cylinder fuel and timing independently. We have picked up 20 to 30 HP at WOT changing heat range, gape along with fuel and timing. After melting holes in a new set of pistons, relying on O2 sensors, we confirm by reading plugs.
I'm considering putting a set of new plugs in the 2.5l T in a parking lot. Make a WOT 2nd through 3rd, cut the ignition, coast to the shoulder and pull the plugs. Install the originals. Then photograph the test plugs and read them in the shop. Then I'll have a base line for a healthy engine and confirm if AFR/Timing/Heat Range are happy with the tune. Four plugs seems like a piece of cake compared to changing 16 plugs in the race motor!
Each cylinder gets a different amount of air through the intake manifold. The exhaust back pressure is different on each "hole" as well. Injectors input fuel slight differently as well. On a DD tune, this should not be critical but could yield some info for the tuner.
I'd be interested to know if others have done this exercise and what they found. Each engine, fuel and spark plug combo have a different plug signature. I'd like to compare my test to another.
Thanks
https://honda-tech.com/forums/forced-induction-16/***-basics-reading-spark-plug***-3063102/
I've been "reading" spark plugs on drag racing motors to confirm the O2 sensors AFR, timing, knock and heat range. We compare this to our O2 AFRs, timing and such. We have an EGT per cylinder to compare as well. We can tune each cylinder fuel and timing independently. We have picked up 20 to 30 HP at WOT changing heat range, gape along with fuel and timing. After melting holes in a new set of pistons, relying on O2 sensors, we confirm by reading plugs.
I'm considering putting a set of new plugs in the 2.5l T in a parking lot. Make a WOT 2nd through 3rd, cut the ignition, coast to the shoulder and pull the plugs. Install the originals. Then photograph the test plugs and read them in the shop. Then I'll have a base line for a healthy engine and confirm if AFR/Timing/Heat Range are happy with the tune. Four plugs seems like a piece of cake compared to changing 16 plugs in the race motor!
Each cylinder gets a different amount of air through the intake manifold. The exhaust back pressure is different on each "hole" as well. Injectors input fuel slight differently as well. On a DD tune, this should not be critical but could yield some info for the tuner.
I'd be interested to know if others have done this exercise and what they found. Each engine, fuel and spark plug combo have a different plug signature. I'd like to compare my test to another.
Thanks
https://honda-tech.com/forums/forced-induction-16/***-basics-reading-spark-plug***-3063102/