Search that question. I have seen a post with links on here before. Remember, you have to write all your own values for those no name transducers, but if I remember correctly, they also might have been in the thread.

Here's one

http://www.yellowbullet.com/forum/showthread.php?t=1527498&highlight=holley+transducers

 

For dome, fuel and map I used Holley. Then for pre intercooler, oil pressure, trans cooler pressure, turbine back pressure, i used "affordable" transducers that happened to be available on ebay. I also used a AEM 2 bar sensor for crankcase pressure that was 1/2 the price of the holley, was 1/8npt and included all the volt/psi data.

For the stuff theat really matters I used the holley stuff, for stuff that is really only for data/information I started with "affordable" sensors. Saved about $500 if I include the 5 additional temp sensors I added also that were Autometer and FAST brand vs the Holley.

 

I’ll try to look back in my notes and see, but the Holley sensor wasn’t any better than the $16 china unit when I tested them. Using the supplied voltages they were both off above 30psi or so using the supplied voltage vs psi inputs and only got worse with added pressure. This was using my MS3 and a calibrated gauge. I’d bet my lunch Holley sources them from china as well…

I ended up skewing the table so the sensor was at least semi accurate in the pressure range I wanted.

 

So far the $22 ebay sensor reads exactly the same as my machanical fuel gauge at 60 psi

 

Mouser Electronics sells a lot of Honeywell 5v pressure sensors for around $85. $60ish if you buy 10. I don't have part numbers handy as I haven't needed to order in a over a year.

 

I use that item every time I tune and its very close , with in 1 psi of my gauge , so no way to know what it right..

 

The Holley sensor that came on the Holley FPR I tested was off using their supplied .5-4.5v scale on an MS3 ECU. That’s my experience with them… The cheapo sensor was no worse than the Holley. Could have something to do with the MS3 I suppose, point is the cheap sensor worked just as well once setup to a verified gauge and pressure range.

 

Was it an SSI sensor or something else? This is something you bought new or used?

 

Holley uses SSI senors which are really good quality. Ive never had one read off. Ive used quite a few sensors from amazon for the non important stuff and they read spot on also. Just search 9milelake 100psi, they are 18.58 each. They are acually better than the AEM brass 100psi sensors.


here is the link

https://www.amazon.com/9milelake-Stainless-100psi-Pressure-Transducer/dp/B00ZR4BI4Q/ref=sr_1_cc_1?s=aps&ie=UTF8&qid=1464800861&sr=1-1-catcorr&keywords=9milelake+100psi

 

Chinese sensor checking in. Click box for autometer 0-100 psi done

 

Thanks for the replies and links.

I bought the Chinese sensor sold by Amazon for the fuel pressure. It worked for about a month then died. I have a Holley sensor for the dome, so guess i'll get 2 more for fuel and oil and take a chance with other non-critical functions. Is the SSI branded 100psi sensor less expensive than buying the Holley brand? Can't seem to find any vendor selling it.

 

Here you go. Buy this. http://www.ebay.com/itm/Pressure-tr...oil-fuel-air-water-/261260635816?hash=item3cd458eea8:g:wEgAAOSw2XFUgI6K&vxp=mtr

 

yup

 

The one I tried from Amazon is the 9milelake Stainless Steel 100psi Pressure Transducer.

 

I've got a few of those eBay sensors, a 100 psi, a -14.5 - 30psi, and a Honeywell 100 psi one i picked up cheap. I do instrumentation and calibrations for a living. I have been wanting to do some calibrations and comparisons with some high dollar test equipment I have access to.

 

Then lets get crackin!

 

I've tested three of the "affordable" transducers and the repeatibility was remarkable. I supplied 5 volts to it, grounded it and read the signal voltage at various psi settings. Swept each one twice up and down and the readings were within .01-.02 volts, if not right on. I recorded the voltages at various pressures and scaled the sensor accordingly on the Holley.

 

Agree, they work fine but I only use them in non-critical apps.

 

I use them for oil psi and fuel psi. If either give me trouble Ill end up hookin up a manual gauge to verify pressure.

 

http://www.ebay.com/itm/OEM-Fuel-Ra...5273-FREE-SHIPPING-/201365708806?hash=item2ee254e006:g:uT8AAOSwpdpVcOkO&vxp=mtr

Just found this. Looks to be 4an the same as a stock gm fuel rail. I can not find a data sheet though

 

Post #16. Honk if parts fall off runs the same ones I do. He is pretty damn fast so it's good enough for me. By the way ...Thanks to Honk for posting these a long time ago. Money well saved vs the Holley sensors

 

SSI or Honeywell...either is fine. Accuracy is not the measure of how good a sensor it is...that can be calibrated (pardon the pun). Sensor quality/life is far more critical. I have some cheaper transducers used in places I don't mind if it fails, but if your looking at MAP, Dome or any control pressure...spend the few dollars and know your getting a good part.

 

I finally got a chance into looking into the sensor I have. I compared it to a Honeywell pressure transducer I had laying around. I plumed my two sensors together and hooked them up to a Mensor pressure calibrator, supplied the sensors with 4.997V and recorded the output of pressures in 10PSI increments with my Fluke meter. The ebay sensor looked decent for the price of it, the jury is still out on the reliability of it though. Hopefully I will be able to revisit this soon and gather some more information.

 

Thanks for reporting back with your findings

 

Following as I am looking to use a few of these myself.

 

I use these and they have worked perfect and plug right in. Uses Holley values also. $16

http://www.ebay.com/itm/271576977896?_trksid=p2060353.m1438.l2649&ssPageName=STRK:MEBIDX:IT

 

Same here.

 

Thanks for the heads up.

 

Are any of you guys using a manifold to remote mount them?

 

I had 2 of the $115 one from respected seller. One lasted 3 or 4 years, the other about 2.