 MPS tunning, Do my plugs seem to lean |
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| Ron914 |
 Mar 17 2026, 04:17 PM
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#1
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Member  Group: Members Posts: 488 Joined: 19-April 22 From: Huntington Beach,Ca Member No.: 26,487 Region Association: Southern California 
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I have a 2056 and was advised I should tune my MPS for optimum performance .
I rebuilt it with CFR diaphragm kit so I could dial it in . I have not tried to tune it yet and am wonder how my plugs look ? I have to richen the mixture on the ECU to run well (CW). I understand running lean will cause high heat , which could be part of my problem with high running temperatures . They look on the rich side to me . Plugs are in order 1-4 (#3) does not have the number on it.     |
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| brant |
Mar 17 2026, 07:17 PM
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#2
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914 Wizard Group: Members Posts: 12,161 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains 
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You really have to use an AFR
Plugs are not sensitive enough to get it correct Plus you need to read wide open throttle for real safety of the ratio (and heads). So plugs won’t work |
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Posts in this topic
Ron914 MPS tunning Mar 17 2026, 04:17 PM
worn They look about right to me, but you may want to b... Mar 17 2026, 04:22 PM rjames What Worn said. You'll need a wideband AFR kit... Mar 17 2026, 04:42 PM Montreal914 I have to richen the mixture on the ECU to run wel... Mar 17 2026, 05:24 PM FlacaProductions Re: MPS tuning - this will get you to post 12 of a... Mar 17 2026, 06:39 PM emerygt350 Ron, those look pretty good.
Besides the afr and ... Mar 17 2026, 06:55 PM
Superhawk996 The color of the ceramic electrode insulator is wh... Mar 17 2026, 07:36 PM |
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