Does anyone know how to calibrate a Defi boost gauge??? My performance shop has told me & showed me that the boost gauge accuracy is off by three lbs. The difference is consistent so we know the gauge is working correctly, it just needs to have the needle adjusted. Any help would be appreciated.

 

not familiar with Defi but that normally would indicate a bad gauge with anything else I have seen

 

I had a similar issue, not a Defi guage but they just replaced the guage and sender.

 

I have the Defi boost gauge..... I don't think you can calibrate it. Like the others have said... You may have a bad one..... I could be wrong.

Call FP or Any of the shops on here and ask them .

 

My Defi boost is off 1lb. 9psi reads 10. I just got used to it and use the EVC 6

 

Thanks for all of your responses. I will contact a shop to discuss.