Connect an external Gauge for the boost on a 2017 Ecoboost

[OKP]

Hi , I drive a 2017 Ecoboost and got an external gauge for the boost installed (just because I like it) It worked fine, but after 10 minutes I got the yellow engine light burning. I read the OBD2 errors , about 6 of them. P0010,P0013, P0135, P0141, P0443 and P0446. I connected the vacuum line from the gauge with a splitter to the hose of the Blow off valve. Gauge worked, but probably not the right connection to hook up the gauge. After disconnecting the gauge hose, all was fine again, I reset the errors, did a test drive , no warning light and no errors anymore.
Now I wonder, which vacuum hose is best o connect the gauge to? Without getting errors from the CU?
thx for your help. In attachement , the installed gauge in the dash and my engine bay. Eric

Sponsored

 

[PRG3k]

External boost gauges and BOV's can throw codes on this car. Do a search for 'Mustang Ecoboost Boost Reference Adapter' and take your pick. They are all designed to fix that problem.

The preferred place to tap into is the MAP sensor on top of the throttle body. Guide here: https://www.mustang6g.com/forums/threads/boost-reference-adapter-installation.70844/

PS, You're gauge looks good there!

 

[OKP]

I found the cause. I wanted to put an extra power plug in the fuse box and connected it to the power supply of the CU that controls a lot of sensors. But if you forget to put 2 fuses in stead of 1, the CU is out of power and triggers the errors, 6 at the time. So I put 2 fuses, one original one and one for the extra power source that was needed for the led light of the gauge. All works fine now.

Sponsored