Upgraded to HiRes 10g

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03-23-2010, 06:22 PM

#21

richyvrlimited

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Quote:

Originally Posted by Braineack

the .1uF cap is need to filter the second trigger input from the CAS for some reason on Hi_Res code it's needed else you have random misfires.

needed for PNP or not using Ms-I and hi_res

Yip I had that years ago, ended up going back to the 'normal' firmware then DIYAutotune figured out the fix and it was happy days

Generally only later MK1's are affected, but I've seen the occasional early one require it too, (never a 1.6 tho).

03-23-2010, 06:30 PM

#22

timk

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My 89 model with a MSPNP needed the filter with HiRes.

05-01-2010, 04:26 PM

#23

Laur3ns

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Quote:

Originally Posted by Braineack

the .1uF cap is need to filter the second trigger input from the CAS for some reason on Hi_Res code it's needed else you have random misfires.

needed for PNP or not using Ms-I and hi_res

The MM9494 PNP boards already have that cap right?
Or is that another cap?

05-01-2010, 04:49 PM

#24

Laur3ns

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Quote:

Originally Posted by Spookyfish

The MM9494 PNP boards already have that cap right?
Or is that another cap?

Found it:
https://www.miataturbo.net/showpost....0&postcount=12

Quote:

Originally Posted by Matt Cramer

Check the sticker on the underside of the MSPNP - if it identifies it as a Rev C, it already has the cap mod. It sounds like you have an earlier one that lacks the mod.

05-07-2010, 09:02 PM

#25

paNX2K&SE-R

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Silly question but are there 2 versions of the hires firmware, one for maf and one for iat? When I downloaded the 11d zip I only saw one version and it didn't specify.