TPS based AFR map for better mileage (?) - Page 2 - Miata Turbo Forum - Boost cars, acquire cats.

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Old 09-22-2015, 09:36 AM   #21
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for a second or two without knock
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Old 09-22-2015, 09:39 AM   #22
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There's no reason to see AFRs like that under boost. Ever. You also said "a few seconds."

And "accelerating mildly."

None of these things add up, and none of them make it ok to target 14.6psi at 150kpa.
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Old 09-22-2015, 09:41 AM   #23
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Quote:
Originally Posted by concealer404 View Post
There's no reason to see AFRs like that under boost. Ever.
Said no OE turbo car trying to pass strict emissions standards. ever.
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Old 09-22-2015, 09:43 AM   #24
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Quote:
Originally Posted by Braineack View Post
Said no OE turbo car trying to pass strict emissions standards. ever.
Not sure if i should rephrase or laugh ruefully at your sad but true comment.
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Old 09-22-2015, 09:47 AM   #25
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All in all I understand I need lean as possible (knock free, normal EGT) cruise with 35-40deg.

Leaner map all around will give better mileage and I can go to 13.5~ in transit boost, WOT would still be 11.5.

I think that's my plan for how to get better (normal) mileage.

Thanks.
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Old 09-22-2015, 09:56 AM   #26
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i dont understand why you can't just tune like this:


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TPS based AFR map for better mileage (?)-80-28067d1321311515_good_afr_target_table_afr_tablez_14465b9d9170256eaf295be6777f95f1939527be.jpg  
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Old 09-22-2015, 09:58 AM   #27
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I understand that tps based and leaner afr map would be very much the same.

Thanks for the map Brain. (I'll try it too)
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Old 09-22-2015, 10:41 AM   #28
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Cruise is not 150kpa though. I never had ridiculous AFRs like that in my map and i broke 30mpg every time.
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Old 09-23-2015, 06:06 PM   #29
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Where did you read that cruise is 150kpa ?
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Old 09-23-2015, 06:10 PM   #30
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<p>This is my 32mpg AFR map.</p><p><img src="https://cimg5.ibsrv.net/gimg/www.miataturbo.net-vbulletin/514x350/80-m5zsnhq_b70eaac4cb2fcbb0dca9afaf407d6af1f80c1fd7.p ng" title="" /><br /><br />&nbsp;</p><p>I have seen Ben&nbsp;talk about cruising even leaner, with lots of advance.</p>
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Old 09-23-2015, 07:38 PM   #31
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Brain,
Why not carry the 16.0 value to the cells below down to 30 kpa?
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