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Post by BikeTuna on Dec 6, 2017 16:38:54 GMT
I've just phoned the rolling road near me to get the 5 booked in, and when they asked about how it was running at the mo, I mentioned that with the TPS (the black box on the NS of the throttle body) is disconnected it holds a high idle, but with it connected it doesn't hold one at all, even when adjusting the screw.
The dyno guy then says that the early ones (mine is an 89) has a throttle position switch rather than a proper potentiometer, and it'll be much more difficult to map the car unless I change it out, and that there is a Tailgate McNoIndicate part that fits.
Has anyone heard of this or know what I need to be looking for? |
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Post by joeytalent on Dec 6, 2017 19:40:30 GMT
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Post by joeytalent on Dec 6, 2017 21:57:12 GMT
Oh, and I think the TPS from a 1.6 auto is also the variable type - harder to get hold of though. Edit - one more link: forum.miata.net/vb/showthread.php?t=477207 - the Farnell one is interesting, if it's still cheap. |
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Post by atlex on Dec 6, 2017 22:20:27 GMT
LOWE sell a replacement for the Tailgate McNoIndicate TPS that is perfectly good and fits OEM. I didn't even need to recalibrate mine.
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Post by atlex on Dec 6, 2017 22:21:59 GMT
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Post by atlex on Dec 6, 2017 22:23:33 GMT
LOWE sell a replacement for the Tailgate McNoIndicate TPS that is perfectly good and fits OEM. I didn't even need to recalibrate mine. You'll still want to calibrate for VTPS (switching from the non-VTPS) voltage drop tho  full/open - it maps the signal in between. |
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Post by BikeTuna on Dec 7, 2017 8:21:00 GMT
Perfect, thanks very much!
£70 is more than I can spend this side of xmas, so will have to live with a 2k idle for a few weeks, but I'll be straight on that after.
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Post by Vindi (Russell) on Dec 8, 2017 17:20:22 GMT
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Post by atlex on Dec 8, 2017 21:24:58 GMT
one recommendation I can personally attest to, don't get a plastic VTPS adapter, or at least get one that is sound to higher temperatures. My 3d-printed ABS one warped. I got the ally one off G19 earlier this year. Much better.
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Post by atlex on Dec 8, 2017 21:25:28 GMT
2nd hand VTPS is ++double extra plus good. |
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Post by Vindi (Russell) on Dec 8, 2017 22:42:54 GMT
one recommendation I can personally attest to, don't get a plastic VTPS adapter, or at least get one that is sound to higher temperatures. My 3d-printed ABS one warped. I got the ally one off G19 earlier this year. Much better. That just depends what material is used when it was printed. Mine (made by Cerberus) has been used with TBs and then on a 270bhp turbo setup (in a friends car) continually as a daily and on track for the past few years ... no issues at all. Russell |
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Post by FFS Corders on Dec 9, 2017 11:20:36 GMT
Ones directly from cerbs are great quality, no one has complained about his ones
Plenty of the copies of his however haven't been quite as good
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Post by Vindi (Russell) on Dec 9, 2017 12:23:53 GMT
Ones directly from cerbs are great quality, no one has complained about his ones Plenty of the copies of his however haven't been quite as good The problem is a certain person has been complaining about Cerbs versions a lot ... and now happens to sell his own version. Which fits his m.o. in other products he sells as well. Russell |
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Post by dadbif on Dec 14, 2017 22:29:02 GMT
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Post by BikeTuna on Jan 8, 2018 12:44:35 GMT
dadbif, I have bought that exact sensor. I like this idea of making a bracket and spending a fiver on a sensor than spending £50 on a sensor and another £25 on a bracket...
Do you have a pic of your bracket I can see?
Do you think that I could make the bracket out of Carbon fibre rather than ally? would it stand to the heat and the strain? (I should think so...)
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full/open - it maps the signal in between.
le sigh