Boost Gauge

Just follow the directions that come in the box or what? Maybe I'll check out a YouTube video or something

 

So I have a question for those of you using the digital boost gauges. I have the CravenSpeed mount and have a Innovate MTX AFR and Innovate Boost/Vacuum and shift light combo gauge. When I first installed it, I couldn't register any boost at all, I changed belts and I now can register some boost, but not much at all and it is only at high RPM. But it sure feels like I am boosting cause there is no way I am accelerating while towing 6500lbs the way I do with no boost unless it just loves to tow at some times and not others. And I can hear the whine. So my question is, are the digital boost gauge sensors no sensitive enough to only register higher boost pressures? Do I possibly have a faulty sensor? Do I have a boost solenoid issue possibly also. The most boost I have been able to register is 2.8lbs. But I idle at -21inHg. I am trying to figure out why my mpg and power have dropped so dramatically from one summer of towing to the next. I have just installed the gauges, the URD Deatschwerks 255 pump and filter kit, and the URD specU exhaust. I do have cracked Doug Thorley headers right now and am waiting for my URD specU headers to get done being built so I can fix that issue and move my A/F sensors off of the center primary tube and down to the collector so I can monitor all cylinders instead of only the center of each side. My AFR's are quite rich and I have been told that if it is too rich the ecu will not let you use the boost and open the "wastegate", which doesn't make sense to me. More air would lean it out and make it better. But when it runs really good with 0.0lbs of boost the AFR is still in the 10.2-10.8 range. Anyway, if anyone has read the whole thing and can help me out, that would be awesome! Oh and I definitely make way more boost towing than I do dry. I can't get the gauge to read hardly any boost at all dry. Even driving super super aggressively. I also have the 2.85" pulley to put on, but I want to know everything is running correctly first.

 

I have the same gauge and 2.85 pulley and you should read higher boost than 2.8 psi.

The MAP sensor should be firmly securize to avoid any vibrations and it should be away heat source and hose fitting should be facing down.
Where have you connect the MAP sensor on the supercharger?
Have you connect your gauge with LM programmer to check the settings?
Have you check if yoyr SC bypass valve operates correctly (there is no wastegate.
With the TRD flash it's normal to have AFR of 10.2 to 10.8 at wide open throttle.

 

I have the MAP sensor mounted to the firewall just above the s/c unit and connected directly to the boost port on the top of the main unit. I have hooked the gauge to the laptop and adjusted stuff but that is really all just for the pointless shift light on my automatic. lol I will do some research as to how to check the bypass valve for correct operation. Yeah I know there is no wastegate, went braindead and knew that it would get the point across. Sorry. And yeah the TRD flash is super rich, especially for people in elevation. But I can only get the 10.2 to 10.8 with no boost reading and it just feeling good. If I have a boost reading it is much lower. I am in high 7's to low 8's most of the time. I love the gauge though. Just want to know if it is the gauge or the truck that is not working right. Or that both are. But something tells me the truck isn't right. I can only get about 140 miles on a tank towing and 180-190 dry. And that is adding the tire size calculation in.

 

All right, I've got my boost guage in the mail and on its way to me. Wondering how you guys ran your line and what's the easiest way to go about doing it?

 

This is what I did, added a vibrant boost block so 1 line for FPR , gauge and meth injection controller. Poked the rubber grommet out just above the main harness on the passenger side.

 

I will be installing my boost gauge on the a pillar on the driver side. What would be the easiest way to get the hose from the gauge up to the fitting on the super?

 

2 1/16"

 

How you have mounted these together? Speedhut gauge mount is by a collar, Flexpod is designed for 2 studs. How to get a solid mount which can be removed too?

 

I used Gorilla tape to fit the Speedhut gauges into the Flexpod. Just wrap them until they fit snug. I also got a PLX Wideband AF Sensor Module for the AF/R gauge.