90-93 idle droop or stall issues - Page 2 - Miata Turbo Forum - Boost cars, acquire cats.

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Old 12-02-2007, 08:20 PM   #21
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I'm about to make this switch.
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Old 12-02-2007, 08:39 PM   #22
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I just did it (using the Wells) and it works. The car used to stall every time with the AC on when i took my foot suddenly off the pedal (with my MSPNP9093 on my 91 with light flywheel if that matters to anyone) - No more, I have not been able to make it stall.
The idle still droops a bit more than I would like but I expect that means I have to learn a bit more about how to tweak things (but not stalling is great). I'll be reading here to see what folk suggest for further optimization.

Calibration of the TPS and setting the threshold took all of 15 minutes. I was not sure if the post where Jerry lists all the settings that ought to be changed in addition to the two I did is current but I just copied them over since they do not seem to be vehicle specific. If there are updated settings or further guidance for optimization I would love to see them.

One thing I did note was that the throttle off position seemed to shift after a day of driving (TPSADC from 95 to 90), after that it has been stable (well, I have only had it on for only a few days but so far it is not drifting any more).

Great mod, thanks for the suggestion (and to DIYAutotune for the MSPNP, I really like it).
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Old 12-10-2007, 10:17 AM   #23
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aside from this window, what else should I change with tps?

I want to get my car running in its current form before switching to the built motor, then switching to tps idle, enrichment, and boost control.
Thanks
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Old 12-19-2007, 08:50 PM   #24
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i pulled 2 bmw TPS sensors from the junkyard. but they are both 3 wire units. on looks like the one pictured in the MSPNP FAQ, but it has a plug. the other one looks kinda like the stock miata sensor has 0 208 120 302 on the front. can i use either?
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Old 12-28-2007, 04:53 AM   #25
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The one I've got is a 6 wire unit, which has "0 280 120 402" printed on it. I've taken a few pics of it for reference:






This particular one is mentioned in the FAQ (even includes a pin map) so maybe it is just easier to grab one? I haven't installed it in the TB yet but from the comparisons I have done I can't see why it wouldn't work.
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Old 12-28-2007, 10:11 AM   #26
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Lets say I get my car tuned on a dyno asap, then want to ad the tps...can I just use the tps for enrichments and boost control and not have to jack with other, more complicated stuff / unknown unknowns?
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Old 12-28-2007, 10:21 AM   #27
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Quote:
Originally Posted by hustler View Post
Lets say I get my car tuned on a dyno asap, then want to ad the tps...can I just use the tps for enrichments and boost control and not have to jack with other, more complicated stuff / unknown unknowns?
Yes - in fact, you can just add the IAC settings and not even use it for enrichment if you want.
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Old 12-30-2007, 04:18 PM   #28
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Quote:
Originally Posted by saboteur View Post
The one I've got is a 6 wire unit, which has "0 280 120 402" printed on it. I've taken a few pics of it for reference:

This particular one is mentioned in the FAQ (even includes a pin map) so maybe it is just easier to grab one? I haven't installed it in the TB yet but from the comparisons I have done I can't see why it wouldn't work.
Thats the one I use. Superclean install in my opinion. Use it with the MS1 Extra.

Håkan
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Old 02-07-2008, 03:55 AM   #29
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Im super confused about the VTPS mod, I got it done to my mspnp because i didnt want to deal with the stalling issues everyone has. But still un aware of what need to be changed. The TB and tps from an automatic?
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Old 02-07-2008, 04:00 AM   #30
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Quote:
Originally Posted by thesnowboarder View Post
Im super confused about the VTPS mod, I got it done to my mspnp because i didnt want to deal with the stalling issues everyone has. But still un aware of what need to be changed. The TB and tps from an automatic?
You can do that. Or you can use one of the TPS shown in this thread, pretty sure they're from a mercedes. Joe Perez is currently trying to retrofit a honda aftermarket TPS to the miata throttlebody so that might end up being an option.
For now the Mercedes unit shown and the factory auto trans miata TPS are the best options.
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Old 02-07-2008, 04:19 AM   #31
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Quote:
Originally Posted by cjernigan View Post
You can do that. Or you can use one of the TPS shown in this thread, pretty sure they're from a mercedes. Joe Perez is currently trying to retrofit a honda aftermarket TPS to the miata throttlebody so that might end up being an option.
For now the Mercedes unit shown and the factory auto trans miata TPS are the best options.
Where might one get one? Jerry from diyautotune said i needed to get a vtps before i install my pnp.
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Old 02-07-2008, 04:35 AM   #32
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Quote:
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Where might one get one? Jerry from diyautotune said i needed to get a vtps before i install my pnp.
Read this thread. Then get one on ebay or a junkyard.
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Old 02-07-2008, 12:22 PM   #33
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What's the going rate for the board mod to accomodate the LTPS?
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Old 02-07-2008, 12:53 PM   #34
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Quote:
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What's the going rate for the board mod to accomodate the LTPS?
[email protected]ne.com Ask them yourself, i'm sure they're willing to give you a price quote.
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