AFR wierd change from heating
#1
Newbie
Thread Starter
AFR wierd change from heating
Hello!
I have the next promblem :
On the normal (not a cold ! ) car the AFR is more reach , than after a few drag or roll race.
i.e. on a hot car AFR poorer and closer to AFRmap.
The difference is around 0.3 .
Evo 9 Speed Density
Ignition Project coils
Denso Racing IKH27 sparks
Water/Methanol Injection
Are there any thoughts as to achieve stability?
Thank you!
I have the next promblem :
On the normal (not a cold ! ) car the AFR is more reach , than after a few drag or roll race.
i.e. on a hot car AFR poorer and closer to AFRmap.
The difference is around 0.3 .
Evo 9 Speed Density
Ignition Project coils
Denso Racing IKH27 sparks
Water/Methanol Injection
Are there any thoughts as to achieve stability?
Thank you!
#2
Evolved Member
iTrader: (71)
I do know that the hotter the IAT, the richer the tune will be. This counteracts knock that could be happening with lean AFRs in hot weather. It's adjustable with Tephra V7 if you want to tamper with something that may save the engine. The water/meth injection might be something causing this as well.
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