Ben,
If I have a setup like this now for my EGT guage in my pillar can I not just run the wires to an exteranl port on the flashcan to log EGT's?
100 PSI Boost into ECM feed.
- Thread starter McRat
- Start date
Ben,
If I have a setup like this now for my EGT guage in my pillar can I not just run the wires to an exteranl port on the flashcan to log EGT's?
I'm using this Honeywell sensor instead of the factory map sensor and it seem to be working fine. I used the boost sensor scaling table in EFI Live to rescale the sensor and now I can actually log boost over 36 psi.
Great thread! Very interesting!Is this just for logging or does it serve any diferance to the ECM/engine performance?
OPPSS!! I forgot all about this.
It's probably only useful for datalogging.
I was having issues with the truck at the same time I was experimenting with this, so I removed it so I knew it wasn't the cause. I did not reinstall it yet. It did report accurate boost from 0-61 psig when racing, and 15-90 psia when testing with compressed air.
So currently I cannot say whether it has any performance issues, good or bad.
It can be purchased at Mouser Electronics or other electronic wholesalers.
It's probably only useful for datalogging.
I was having issues with the truck at the same time I was experimenting with this, so I removed it so I knew it wasn't the cause. I did not reinstall it yet. It did report accurate boost from 0-61 psig when racing, and 15-90 psia when testing with compressed air.
So currently I cannot say whether it has any performance issues, good or bad.
It can be purchased at Mouser Electronics or other electronic wholesalers.
I used it to replace the factory map sensor so this is the only boost/map sensor on the truck. I haven't discovered any issues on the street or the pulling track so far and I've logged 49.5 psi at the manifold.
Tomac, do you have part no. or model no. or a place someone can look into getting one of these sensors you use?!?!
Thanks for sharing!
Thanks for sharing!
just a little FYI for everyone in this thread, delphi makes an OEM sensor that will read up to 50psi (boost)...it looks just like our existing map sensors, except it is capable of reading much higher pressures.
no, I dont have a part number or know where you can get one. but the LML will have one stock.
ben
no, I dont have a part number or know where you can get one. but the LML will have one stock.
ben
just a little FYI for everyone in this thread, delphi makes an OEM sensor that will read up to 50psi (boost)...it looks just like our existing map sensors, except it is capable of reading much higher pressures.
no, I dont have a part number or know where you can get one. but the LML will have one stock.
ben
The what now??
Pat thanks for the idea
I am useing a oil pressure sensor from a 03+ dmax ( lly are same )
orange to black
grey to grey
brn/tan to green
I had a heck of a time calibrating the boost sensor table....road runner came in handy big time,But the scale looks brutal but it matches the compressed air so i dont care to much
I would like to see EFI up the hard limits past 700kpa (100psi) just to make it easier to calibrate and be of more use when others that run higher than 500 kpa of boost
As far as your scale what did you use for 0 volts? 0? I have 15kpa in there right now
at 2.97 volts i used 460kpa and it seems to match
Sadly i looked everywhere for info on the stock oil sensor with no luck,Not sure if its even a 0-100 psi sensor
I googled the PN# and its all Japanese Denso 499000 -7340
Anyways thanks for the tip
I am useing a oil pressure sensor from a 03+ dmax ( lly are same )
orange to black
grey to grey
brn/tan to green
I had a heck of a time calibrating the boost sensor table....road runner came in handy big time,But the scale looks brutal but it matches the compressed air so i dont care to much
I would like to see EFI up the hard limits past 700kpa (100psi) just to make it easier to calibrate and be of more use when others that run higher than 500 kpa of boost
As far as your scale what did you use for 0 volts? 0? I have 15kpa in there right now
at 2.97 volts i used 460kpa and it seems to match
Sadly i looked everywhere for info on the stock oil sensor with no luck,Not sure if its even a 0-100 psi sensor
I googled the PN# and its all Japanese
Denso 499000 -7340Anyways thanks for the tip
Ross is upping the hard limits of the boost sensor table to 150 psi in the next update:rockon:
I priced that sensor out today from GM and they want 240.00 Thanks to Joey mine was free:hug:
I priced that sensor out today from GM and they want 240.00
Thanks to Joey mine was free:hug:
The factory oil gauge goes to at least 120psi.
Here's how I would calibrate:
Method1: Get your truck running and check any of the 5v supply sensor wires. IIRC, they are 5.1v. Using a variable DC voltage supply (about $100 online) turn it to 5.1v and hook to the supply and ground of sensor. Get output voltage at atmospheric pressure. Now supply it with 30psi air pressure and get the reading. Last supply with 90 psi and try one more time. Graph points on a sheet of graph paper, press vs volts. 3 points will help identify if your test goes wrong, as all three should form a line on a piece of graph paper. Now you can fill in your table. If you are good with math and Excel, skip the paper.
Method2: Hook EFILive up to your truck and put it on SCAN, and check oil pressure. You will need to strip off a little insulation off the signal output wire and hook up an ohmvolt meter to that and ground for DC volts. Take reading with engine off, engine idling, engine at 2500. Might want to program in a revlimit of 2500 to simplify. Record volts and pressures reported to ECM. Graph or Excel.
Here's how I would calibrate:
Method1: Get your truck running and check any of the 5v supply sensor wires. IIRC, they are 5.1v. Using a variable DC voltage supply (about $100 online) turn it to 5.1v and hook to the supply and ground of sensor. Get output voltage at atmospheric pressure. Now supply it with 30psi air pressure and get the reading. Last supply with 90 psi and try one more time. Graph points on a sheet of graph paper, press vs volts. 3 points will help identify if your test goes wrong, as all three should form a line on a piece of graph paper. Now you can fill in your table. If you are good with math and Excel, skip the paper.
Method2: Hook EFILive up to your truck and put it on SCAN, and check oil pressure. You will need to strip off a little insulation off the signal output wire and hook up an ohmvolt meter to that and ground for DC volts. Take reading with engine off, engine idling, engine at 2500. Might want to program in a revlimit of 2500 to simplify. Record volts and pressures reported to ECM. Graph or Excel.
just a little FYI for everyone in this thread, delphi makes an OEM sensor that will read up to 50psi (boost)...it looks just like our existing map sensors, except it is capable of reading much higher pressures.
no, I dont have a part number or know where you can get one. but the LML will have one stock.
ben
Do you know if these are currently in the new trucks or just a rumor? If so would they read 50 psi boost, or does that 50 psi include atmospheric pressure cause my map sensor right now says 37 WOT