What's your A/F on Overrun?, 'Nother D-Jet A/F Question |
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What's your A/F on Overrun?, 'Nother D-Jet A/F Question |
BeatNavy |
Mar 12 2017, 12:28 PM
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#1
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Certified Professional Scapegoat Group: Members Posts: 2,924 Joined: 26-February 14 From: Easton, MD Member No.: 17,042 Region Association: MidAtlantic Region |
For those with D-Jet, what are you typically seeing for A/F ratio on a medium to hard overrun? Based on what I've read here mine seems too rich - like in 10's and 11's. Once the RPM's drop closer to idle it bounces back up to normal idle A/F ratios. Does A/F on overrun even matter?
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Frank S |
Sep 27 2018, 11:50 AM
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#2
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Member Group: Members Posts: 135 Joined: 15-April 15 From: Wiesbaden, Germany Member No.: 18,632 Region Association: Germany |
AFR of 12 will not hurt the engine and is reasonable I think. What MPG do you get?
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BeatNavy |
Sep 27 2018, 12:03 PM
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#3
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Certified Professional Scapegoat Group: Members Posts: 2,924 Joined: 26-February 14 From: Easton, MD Member No.: 17,042 Region Association: MidAtlantic Region |
AFR of 12 will not hurt the engine and is reasonable I think. What MPG do you get? Barely 20 MPG, driving mostly in and around my neighborhood and to/from work, which is mostly parkway driving - 55 mph for 2 miles, then a stop light - rinse and repeat. The few opportunities I've been able to track actual "highway" driving I MAY get closer to 24 MPG. Nothing close to the 30 MPG or more that many claim. |
Frank S |
Sep 27 2018, 12:09 PM
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#4
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Member Group: Members Posts: 135 Joined: 15-April 15 From: Wiesbaden, Germany Member No.: 18,632 Region Association: Germany |
AFR of 12 will not hurt the engine and is reasonable I think. What MPG do you get? Barely 20 MPG, driving mostly in and around my neighborhood and to/from work, which is mostly parkway driving - 55 mph for 2 miles, then a stop light - rinse and repeat. The few opportunities I've been able to track actual "highway" driving I MAY get closer to 24 MPG. Nothing close to the 30 MPG or more that many claim. Thanks Rob, this is what I get out too (20.5 MPG) but this is while driving it hard and still doing some minor adjustments. Season is almost over, so probably no normal driving within this year... |
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