TPS upgrade

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TPS upgrade

AKindinos Mon Aug 06, 2018 11:52 am

I would like to ask if the ECU will be able to read the signal from a hall effect TPS or if it has to be resistive

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JVDE Mon Aug 13, 2018 7:34 am

The ECU needs to read voltage.
Whats the output of the hall effect TPS?

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Relic1 Mon Aug 13, 2018 10:42 pm

hall sensors are pulse based. (ie one pulse type for positive direction, another type for negative direction)
the OBD1 Honda ECU requires a linear voltage.
So highly unlikely it will be compatible without some sort of counter/DAC circuit in between.

what are you trying to achieve?

**edit** I just learned about linear magnetic based hall TPS sensors on the K-series engines, however they are not truly linear, rescaling would have to occur like we can do with the MAP sensor. not sure if this exists currently.

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AKindinos Fri Aug 17, 2018 4:10 pm

My current TPS failed and I'm looking for an upgrade I'm running Jenvey ITBs on a B20/vtec.

The TPS I was running:

https://store.jenvey.co.uk/throttle-bodies-and-components/throttle-position-sensors/tps-colvern-cp17-tp1

and the TPS I'm going to run:

https://store.jenvey.co.uk/throttle-bodies-and-components/throttle-position-sensors/tps-pg-contactless-rh-tp8rh

I was told that there is an output of 0-5v for this TPS

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Relic1 Fri Aug 17, 2018 6:21 pm

from the spec on their site:
https://store.jenvey.co.uk/pub/media/documents/drawings/D46955.pdf

Analogue Output Option
Voltage output range
Ratiometric output voltage from 4% to 90% (0.2V to 4.50V) (1%) of VSupply over measurement range
Monotonic range 0.1V (2%) and 4.75V (95%) nominal

that should work. (someone please correct me if I am reading something wrong)

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AKindinos Sat Aug 25, 2018 3:35 pm

I have to report that the new TPS is working like a charm! My tune is getting better and better due to accurate readings from the new TPS

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Relic1 Tue Aug 28, 2018 7:49 pm

AKindinos wrote:I have to report that the new TPS is working like a charm! My tune is getting better and better due to accurate readings from the new TPS

sounding like an advertisement. Laughing

happy to hear that there is an alternative option, all though even for solely TPS based throttle body setups, the stock sensor is more than accurate enough.

I'm curious, is your noted improvement based on your previously defective sensor or based on a properly functioning sensor?

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AKindinos Wed Aug 29, 2018 6:06 pm

I have to say that the Honda's Denso made TPS on a single throttle body never failed me. But the matter here was the ITBs I was running. I was looking some pics from OBX ITBs and they have a housing to accommodate the factory TPS. Jenvey uses a D-shaped 8mm shaft with a 6mm cut to accommodate the TPS. Building an adaptor to house the factory TPS proved to be more expensive to me than buying a different TPS. The Colvern TPS I originally ordered wasn't weather sealed and failed and this is because I daily drive the car. The new TPS I'm using is weather sealed. So that's the reason I am so happy. Plus my gas mileage increased because the car is running on the proper map area of the tune!

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