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Old 04-17-2009, 02:25 PM   #1
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Default Could someone help me come up with a good afr target table?

Well so far I think I've been alright at diy'ing it and trying to figure things out for myself but with this one I just don't want to risk using my limited tuning knowledge and really ******* things up.

So I have a jr m45 sc setup with the mspnp on a 96. It makes 5-6 pounds of boost and it comes in like any other supercharger does. I found a couple of other afr target tables from other people running ms with their sc's but they're both a bit different.

Here's a comparison of what I've found. I'm not looking for the be all end all of target tables, just something a bit more appropriate to datalog to instead of the stock 96 table.

Any help would be really appreciated, thanks a lot.
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Old 04-17-2009, 02:35 PM   #2
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I'm probably such a 'tard, but why do those values seem so low, instead of being close to 14.7?
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Old 04-17-2009, 02:45 PM   #3
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because he's using an AEM wideband his targets are in volts not A/F ratio
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Old 04-17-2009, 02:46 PM   #4
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Are those lamba values while in AFR mode or are you really in lamba mode?
If you have a WBO2 and are in AFR mode, this one will do.
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Old 04-17-2009, 02:47 PM   #5
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I'd check out this thread and make the changes. it will make things 100000000000 times easier

https://www.miataturbo.net/forum/t28005/
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Old 04-17-2009, 03:16 PM   #6
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Spookyfish's is very reasonable and a good average. That's what I am using/working towards.
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Old 04-17-2009, 03:34 PM   #7
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mine are richer in boost and leaner in cruise [than this one], but you get the jist:

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Old 04-17-2009, 03:44 PM   #8
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Quote:
Originally Posted by Braineack View Post
mine are richer in boost and leaner in cruise [than this one], but you get the jist:
Richer where? I'd say you're a tad leaner everywhere.
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Old 04-17-2009, 04:37 PM   #9
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I need to richen mine up.. I'm still hitting 12.1 max
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Old 04-17-2009, 05:13 PM   #10
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Quote:
Originally Posted by Spookyfish View Post
Richer where? I'd say you're a tad leaner everywhere.
I target 15.7:1 in cruise and 11.8:1 in boost above 7psi.
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Old 04-17-2009, 05:27 PM   #11
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Quote:
Originally Posted by nicacus View Post
I'd check out this thread and make the changes. it will make things 100000000000 times easier

https://www.miataturbo.net/forum/t28005/
I tried that the second time I had the car running. Not too sure what I did wrong but it ran dangerously bad.


Quote:
Originally Posted by nicacus View Post
because he's using an AEM wideband his targets are in volts not A/F ratio
Yup, AEM UEGO setup.

Quote:
Originally Posted by Spookyfish View Post
Are those lamba values while in AFR mode or are you really in lamba mode?
If you have a WBO2 and are in AFR mode, this one will do.
Yeah it's in AFR mode, just needs translating over, I've got a chart so I can do that for myself.

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Originally Posted by Braineack View Post
mine are richer in boost and leaner in cruise [than this one], but you get the jist:

Thanks mate. I really appreciate all the examples.
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Old 04-17-2009, 05:48 PM   #12
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Quote:
Originally Posted by jdmaddox88 View Post
I tried that the second time I had the car running. Not too sure what I did wrong but it ran dangerously bad.
You have to re do all your targets in the table and then re tune accordingly. I had the same problem.
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Old 04-17-2009, 08:07 PM   #13
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Yeah that's what I suspected but it got to the point where I just wanted it running after working on it for a couple weeks none stop.

quick question - considering the car switches into open loop at around 100kpa or so, how come people tune so much over it?
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Old 04-18-2009, 04:19 AM   #14
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@jd: because this target table is/can also (be) used by MLV when analyzing logs and tuning your VE table.
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