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And it gives a nice map result. I presume they are calculating boost from the installed barometric pressure less the installed intake manifold pressure.

Using the OBDLink MX+ This is their default display for the boost gage. Haven’t customized the displays yet. Still have to figure out how to mount my old iPhone for best viewing.

Aging ? What a ridiculous statement !!!

At 60 MPH (recorded 58.6 in log) the average Fuel/Air commanded was 0.992. The O2 sensor wide lambda meter is at 0.999. The logged Vehicle fuel rate is 0.149 lb/min while the exhaust flow rate is 2.236 lb/min. Subtracting Exhaust from Fuel means the air flow would be 2.097 lb/min. For a Fuel...

Engine Horsepower is Torque * RPM / 5252 - Drew a curve for 'perfect' horsepower if the engine always developed maximum torque. - Drew the calculated horsepower curve using the above equations (which matches the supplied HP curve) - Calculated the difference between best HP and actual HP.

Rewrote the low RPM equation to be from the maximum torque of 190.3 @ 3,000 RPM. So now if we are below 3,000 RPM we can use this equation ot find Torque. and if we are above 3,000 RPM we use the other equation.

Hmm. Max torque is 190.3 lb-ft at 3,000 RPM. If we look at the torque loss at higher RPM's, we get a nice curve up to 6,000 RPM. After 6,000 RPM we take an accelerated Torque loss hit. Torque = (190.3 lb-ft) -( RPM-3000)^2/282,141 - (RPM-6000)/15100

Using the same source, the engine Torque increases up to 3,000 RPM. Fit a polynomial to the data. Once above 3,000 RPM, torque then starts to decrease with RPM. Fitted a polynomial to that regime too.

Why does the plot start at 2,000 RPM? - Most of my driving is in the 1,500 to 2,000 RPM range !

Recreated the Speed vs RPM table for each gear. (Note: top speed is 121 mph) 1 2 3 4 5 6 7 8 4.69 3.31 3.01 1.92 1.45 1.00 0.75 0.62 RPM 17.87 12.60 11.48 7.33 5.51 3.81 2.85 2.35 1,000 4.7 6.7 7.4 11.6 15.4 22.3 29.8 36.1 1,200 5.7 8.1 8.9 13.9...

SUMMARY: Note: In 8th gear: RPM SPEED 1,400 50.5 1,600 57.7 1,800 65.0 2,000 72.2 2,200 79.4 2,400 86.6 2,600 93.8 Parameter Result Parameter Result RPM 1,426.0 ± 78.5 RPM RPM 1,693.0 ± 7.1 RPM Speed (high speed) 49.6 ± 2.7 MPH Speed (high...

For the return trip, I did 30 miles at exactly 60MPH, on cruise control in 8th gear. Averaged 43.3 MPG Log summary: Average for 31.7 minutes Enginer RPM: 1,693 +/- 7.1 Speed : 58.6 +/- 0.3

A 25 mile stretch on Cruise at 50 MPH (8th gear) averaged 57.1 MPG. Log summary: Average for 37.0 minutes Engine RPM: 1,426 +/- 78.5 Speed : 49.4 +/- 02.7

Note: The default MAF (Mass Air Fuel) sensor used in the OBDLink+ display IS NOT A SUPPORTED PID for the Bronco Sport. So that one needs to change.

what variables do I need to monitor? this guy has an interesting set.

Oh, full details for SUV on this page.

From automobile catalog site 2021 Ford Bronco Sport Base 1.5L Ecoboost speed versus rpm for each gear

The link is awesome. Takes some work to get it setup.

I had stopped using that display. It maxes out at 40 MPG. I prefer the trip report with the Instant and average MPG set.

What plugs did you use? How much did they cost? What is the service life?