I dont have a EGT guage on my car. The fuel pressure guage hahn gave me kept leaking into the the guage to the point the I could not read it. I installed an auto meter fuel pressure guage today, I put it on the same -T- that the hahn fuel pressure guage used, off the FPR. Although it will not regester any fuel pressure when the car is on nor when I drive it. It just stays at zero. Thats why I was using my a/f guage.