Fuel Pressure Sensor with Megasquirt

beyondEOD

Active Member

Nov 23, 2019

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#1

• Mar 31, 2020

• #1

Anyone running an electronic fuel pressure sensor with your megasquirt. I'm looking to add on on my 95. What is your setup?

 

a91what

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#2

• Mar 31, 2020

• #2

Yes, look at low dollar motorsports for a $35 fuel safe transducer

 

beyondEOD

Active Member

Nov 23, 2019

106

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Mar 31, 2020

#3

• Mar 31, 2020

• #3

Thanks got this

0-100 PSI Pressure Sensor PN: 7990100

DO NOT USE 799 SERIES FOR DOME PRESSURE. USE 8990100 0-100 PSI pressure sensor 0.5V to 4.5V Heavy duty Stainless steel body 1/8" NPT thread Includes GT150 packard connector, pins, and grommets. (Pre-wired cable sold separately) Compatible with all EFI and data logging systems. Typical uses...

lowdoller-motorsports.com

 

a91what

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#4

• Mar 31, 2020

• #4

sweet, I actually use the cheap ones from amazon or ebay for most other things but fuel is best to use a good sensor... dont want a fire

 

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Blown88GT

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Nov 13, 1999

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Palm Beach Gardens, FL

Apr 1, 2020

#5

• Apr 1, 2020

• #5

a91what said:

sweet, I actually use the cheap ones from amazon or ebay for most other things but fuel is best to use a good sensor... dont want a fire

Click to expand...

I've had 2 of them fail when the engine is up to normal temp for a while. When they cool down, they work again.
Basically, they're good for the first 30 minutes after a cold start.

 

beyondEOD

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Nov 23, 2019

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Apr 1, 2020

#6

• Apr 1, 2020

• #6

@Blownwhat do you recommend? Holley sensor?

 

a91what

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#7

• Apr 1, 2020

• #7

absolutely not, they are the same ones you can get from low dollar motorsport for much less money.

Vibration is usually what kills them

 

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Blown88GT

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Apr 3, 2020

#8

• Apr 3, 2020

• #8

beyondEOD said:

@Blownwhat do you recommend? Holley sensor?

Click to expand...

I can't recommend any of them, but this is what I use.

. | eBay

Find many great new & used options and get the best deals for . at the best online prices at eBay! Free shipping for many products!

rover.ebay.com

 

DemonGT

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May 24, 2002

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May 30, 2020

#9

• May 30, 2020

• #9

Is there a benefit to having the oil pressure set up to show in TS? Asking cause i already have a mechanical oil pressure
and water temp gauges installed in the car. Im guessing id have to unhook those gauges in order to get that info into TS?

 

Blown88GT

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May 30, 2020

#10

• May 30, 2020

• #10

DemonGT said:

Is there a benefit to having the oil pressure set up to show in TS? Asking cause i already have a mechanical oil pressure
and water temp gauges installed in the car. Im guessing id have to unhook those gauges in order to get that info into TS?

Click to expand...

No benefit. Oil pressure is not an input the fuel injectors can use.

 

beyondEOD

Active Member

Nov 23, 2019

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May 30, 2020

#11

• May 30, 2020

• #11

You could setup a low oil pressure condition

 

DemonGT

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May 24, 2002

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#12

• May 31, 2020

• #12

What inputs dose TS use for autotune etc.? Do i need fuel pressure? I just have a gauge on the schrader valve on the
rail.

 

beyondEOD

Active Member

Nov 23, 2019

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Indiana

May 31, 2020

#13

• May 31, 2020

• #13

FP is not required for tuning. FP can be setup via an analog input and configuring that sensor in the generic sensors tab.

 

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Blown88GT

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#14

• May 31, 2020

• #14

DemonGT said:

What inputs dose TS use for autotune etc.? Do i need fuel pressure? I just have a gauge on the schrader valve on the
rail.

Click to expand...

The same inputs it uses for non-autotune.
Look in TS. Do you see fuel pressure, anywhere?

Variable Inputs
Manifold Air Temp (Air temp sensor)
Engine Coolant Temp (Coolant temp sensor)
Manifold pressure/vacuum (MAP sensor)
Air/Fuel ratio (O2 sensor)

Static Inputs
Engine Displacement
Injector size

 

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DemonGT

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May 24, 2002

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May 31, 2020

#15

• May 31, 2020

• #15

Blown88GT said:

The same inputs it uses for non-autotune.
Look in TS. Do you see fuel pressure, anywhere?

Variable Inputs
Manifold Air Temp (Air temp sensor)
Engine Coolant Temp (Coolant temp sensor)
Manifold pressure/vacuum (MAP sensor)
Air/Fuel ratio (O2 sensor)

Static Inputs
Engine Displacement
Injector size

Click to expand...

Thanks for the info, this helps.

To answer your question, yes..i do see it

 

Blown88GT

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Nov 13, 1999

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Jun 1, 2020

#16

• Jun 1, 2020

• #16

Looks like MS3, not MS2. This feature cannot be used on a '95 which has a return type fuel system. Returnless fuel systems have pressure sensors & variable pressure fuel pumps and/or controllable fuel pressure regulators.