Talk:Automatic Performance Control
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Untitled
edit Water Filter
"The APC serves two purposes: it controls boost pressure and the overall performance through the water filter and other various motor pumps - specifically, the rate of rise and maximum boost level - and it detects and manages harmful knock events."
Untitled
editThis does not make any sense. A car does not have a 'water filter' and what are these other various 'motor pumps'?
There were no power gain due to APC. The APC electronics made it possible to to adjust the power/torque curve so that Saab could match the power torque of non APC cars. APC was mainly developed to imporve reliability and decrease fuel consumption. The compression at 8-valve engines was increased from 7,2:1 to 8,5:1. The compression at 16-valve engines was 9:1
The 145hp/235Nm to 155hp/240Nm increase was due to the introduction of an Intercooler at the 8 valve engine at 1986 year model (non cat). Intercooler was standard at all 16 valve engines (175hp/273Nm without catalytic converter) (16-valve engines was introduced 1984)
Models with catalytic converter had lower power/torque, mainly due to lower boost set by the APC.
Power gain claim
editOn the Saab H engines page, the horsepower game from APC was from 107 kW to 114 kW, opposed to the 108 to 116 on this page. Which is it? Can someone clarify? - victorvp (talk)
HP/KW figures are based on calculation error
145BHP/1.36 =106 kW. This is correct. However writer converted from kW to BHP and was 4BHP short (106kW/0.75=141 BHP)and corrected by adding a few kW (108kW/0.75 = 145BHP)
The right calculation is 106kW x 1.36 (instead of deviding with 0.75)= 145bhp
Marc (Holland, marchq@hotmail.com)
Can anyone clarify what the APC gauge means? Does the red mean more boost or more knock and less boost, etc?Freonr2 05:09, 12 August 2006 (UTC)