Telemetry/Data on Forced Induction Taco's

This post is for discussing how we can monitor forced induction setups and what solutions we can come up with and maybe even some theory around what to monitor. I have some background in turbo cars and even adding turbo's to naturally aspirated engines but this is my first Supercharger so if any of the Supercharger guys can answer a few questions I have:

1.) I've always felt that "Boost/Vac" and "EGT's" are a MUST when adding forced induction, especially when modding the system, what are the Supercharger guru's on here thoughts?

2.) Are there parameters natively through OBDII like a MAP sensor that can monitor boost pressure without adding a mechanical gauge?
*Banks Performance iDash can pull these from a 2013 Toyota Taco:

 

Can someone confirm that the V6 tacos don’t have a MAP sensor?
Seems the 4cyl does as well as the V8 4Runner and tundra but not the V6 Tacoma

 

Youll want to make sure you have an AFR gauge

 

I'm not opposed to AF gauges but I feel like they are not necessarily needed if you run an EGT gauge since you'll see a corresponding rise or drop in EG temps with any changes in AF ratio. Also I am limited on space for gauges so I wanted to stick to no more than two gauges with some OBD info being pulled on my phone.

 

Air/fuel ratio is a major one.

 

Temperature changes are not an instant change and even if EGT temps are representative of AFR I would rather have direct real time measurement of AFR.

 

I gave some thought to the EGT vs AFR gauge and one benefit of the AFR is 1 sensor vs multiple thermocouples and the EGT sensor is very sensitive to distance from the exhaust port.

 

Question for the AFR guys on here, the manufacturer recommends installing as far from the tailpipe as possible and before any emissions devices (Catalytic Converters) so are you plumbing them in upstream of the cats or just installing the sensor in the accessory bung in the Y-pipe?

 

I'm turbo, so mine is in the downpipe before the Cat.

SC or NA would be similar, before the Cat. After Y pipe is good so you are averaging the banks.

 

Also, the newer vehicles have the Cats right off the heads basically, so it seems the O2 would have to go there for best reading.

 

Mine is on a clamp on bung after the Y. You lose about 0.1 AFR off the reading. I know some guys with more upstream mounted sensors have to replace them due to sensor failures (may depend on brand used). I think the sensors get cooked more and it reduces the lifespan.

 

So you are POST cat and getting a 0.1 AFR difference?

 

Correct. Although the discrepency may not be accurate but my gauge has always shown to be reading what it should be.

Reading in other threads about it people figured it was only off around 0.1 AFR. Mine seems to have less than that.

 

That makes things much easier as I believe the Y-pipe I ordered from URD has a bung installed for this very reason.

 

Troubleshooting problems would be easier with a sensor in each side before the Y but that and the very slight accuracy loss would be the only drawbacks to a single sensor in the merge or slightly after.