HPtuners with AEM wideband
#23
Premium Supporting Vendor
Thread Starter
#26
Race Director
Member Since: May 2004
Location: Raleigh, NC
Posts: 16,664
Received 1,195 Likes
on
1,053 Posts
St. Jude Donor '15
Less latency
#29
Race Director
Member Since: May 2004
Location: Raleigh, NC
Posts: 16,664
Received 1,195 Likes
on
1,053 Posts
St. Jude Donor '15
Not much to explain. There's always a certain amount of time between when the AFR changes and when the gauge reports it out. Some of it's from the sensor itself, some from wideband controller interpreting the change and then some from changing the output signal. AEM's new ones are supposed to be some of the fastest, around 20 milliseconds reaction time. On some widebands this can be as high as 0.1 seconds. Not a big deal when you're just watching the gauge, but does matter when tuning.
Here's an overview someone did on the HPTuners forum:
Here's an overview someone did on the HPTuners forum:
Last edited by schpenxel; 11-19-2016 at 10:19 PM.
#30
Thanks. I hadn't heard the term "latency" used for that effect. Hysteresis is the common engineering term for the same effect. Always a good day when I learn something new.
Do the AEM gages also record data? I assume sample rate when data logging should also be as fast as feasible or is there a preferred rate?
Do the AEM gages also record data? I assume sample rate when data logging should also be as fast as feasible or is there a preferred rate?
#31
Premium Supporting Vendor
Thread Starter
Not much to explain. There's always a certain amount of time between when the AFR changes and when the gauge reports it out. Some of it's from the sensor itself, some from wideband controller interpreting the change and then some from changing the output signal. AEM's new ones are supposed to be some of the fastest, around 20 milliseconds reaction time. On some widebands this can be as high as 0.1 seconds. Not a big deal when you're just watching the gauge, but does matter when tuning.
Here's an overview someone did on the HPTuners forum:
Here's an overview someone did on the HPTuners forum:
Thanks. I hadn't heard the term "latency" used for that effect. Hysteresis is the common engineering term for the same effect. Always a good day when I learn something new.
Do the AEM gages also record data? I assume sample rate when data logging should also be as fast as feasible or is there a preferred rate?
Do the AEM gages also record data? I assume sample rate when data logging should also be as fast as feasible or is there a preferred rate?
__________________
800-456-0211 / PM /E-mail Facebook AIM or Yahoo: JSSDPC
SDPC since 1929 thanks to you guys! WHIPPLE Superchargers, Procharger, Magnuson,
Powerbond Sale, HPTuners packages!, Trickflow, AFR, PRC, Yella Terra, HPTuners, 7.400" pushrod set (other lengths available)
800-456-0211 / PM /E-mail Facebook AIM or Yahoo: JSSDPC
SDPC since 1929 thanks to you guys! WHIPPLE Superchargers, Procharger, Magnuson,
Powerbond Sale, HPTuners packages!, Trickflow, AFR, PRC, Yella Terra, HPTuners, 7.400" pushrod set (other lengths available)
#32
Race Director
Member Since: May 2004
Location: Raleigh, NC
Posts: 16,664
Received 1,195 Likes
on
1,053 Posts
St. Jude Donor '15
Thanks. I hadn't heard the term "latency" used for that effect. Hysteresis is the common engineering term for the same effect. Always a good day when I learn something new.
Do the AEM gages also record data? I assume sample rate when data logging should also be as fast as feasible or is there a preferred rate?
Do the AEM gages also record data? I assume sample rate when data logging should also be as fast as feasible or is there a preferred rate?