Roman 1

I have a 2000 FRC I installed a cam, 36lb injectors, 243 heads, 1 3/4 headers, CAI, and so on and after I got it running and tuned I noticed that my MPG calculations are incorrect. I verified that the actual MPG is much less than what is being displayed by the on board computer. Computer showing 35 MPG, actuality its 28 MPG.

I assume this is a result of the larger injectors. My question is: Is there a way to correct the calculation used for the MPG? I'm using HP Tuners.

Thanks for any Help/ideas, I 'm sure someone else that has made these mods has probably seen the same behavior in the past.

Thanks.

DOUG @ ECS

Proper injector data is necessary, then a go over of the tune again.

Roman 1

Doug, the injector data was updated to reflect the new injectors as the tune was adjusted. I thought that would have covered it, is there somewhere else/a particular field I can look at in HP tuners to adjust that fuel flow rate?

Thanks for taking the time to try and help me, I do appreciate it.

DOUG @ ECS

Do you have actual data, or did you just put the flow rate as 36's?

Most injectors are rated at 45lbs (3 bar) fuel pressure while your car runs at 58 (4 bar) So the data is skewed.