Power FC Boost offset & overall accuracy
#1
Senior Member
Thread Starter
Boost offset & overall accuracy
I just wanted to post the results of a simple test I performed last night. My PFC always read about 1 to 1.5 PSI lower then my Autometer boost gauge but I suspected this was do only to the offset to I decided to check it with my mityvac.
First I changed my offset to 3600 to zero the factory sensor. I live in Florida so I'm at sea-level. Boost used to read -24 to -26 without the engine running.
Next I hooked up my mityvac to the boost sensor & pumped it up to 10PSI. The commander read .69 (a hair low), then I pumped it to 14PSI. The commander boost reading was at .98 (dead on!). Then 15PSI, commander read 1.05 (dead on). 17PSI equaled 1.19, & the commander wouldn't read any higher then this. (I pumped it to 20PSI & the commander still read 1.19)
Anyhow, with all the threads here about the commander reading as low as 2PSI I just figured I'd post my test results, & recommend that everybody get a Datalogit & adjust the PIM offset to zero the gauge.
Eric.
First I changed my offset to 3600 to zero the factory sensor. I live in Florida so I'm at sea-level. Boost used to read -24 to -26 without the engine running.
Next I hooked up my mityvac to the boost sensor & pumped it up to 10PSI. The commander read .69 (a hair low), then I pumped it to 14PSI. The commander boost reading was at .98 (dead on!). Then 15PSI, commander read 1.05 (dead on). 17PSI equaled 1.19, & the commander wouldn't read any higher then this. (I pumped it to 20PSI & the commander still read 1.19)
Anyhow, with all the threads here about the commander reading as low as 2PSI I just figured I'd post my test results, & recommend that everybody get a Datalogit & adjust the PIM offset to zero the gauge.
Eric.
#5
Eats, Sleeps, Dreams Rotary
i see..thanks
I dontr have the dataloggit. but i believe my power fc reads 0 boost with the engine off..does this mean i am seeing good boost numbers as measured by the pfc?
I dontr have the dataloggit. but i believe my power fc reads 0 boost with the engine off..does this mean i am seeing good boost numbers as measured by the pfc?
#6
Senior Member
Thread Starter
Originally posted by matty
i see..thanks
I dontr have the dataloggit. but i believe my power fc reads 0 boost with the engine off..does this mean i am seeing good boost numbers as measured by the pfc?
i see..thanks
I dontr have the dataloggit. but i believe my power fc reads 0 boost with the engine off..does this mean i am seeing good boost numbers as measured by the pfc?
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