Computer mileage wrong
Thread Starter
Le Mans Master
Joined: Jul 2004
Posts: 6,228
Likes: 698
From: Clifton Park, NY ............Clearwater, FL ... 85 Original Owner
Computer mileage wrong
Since changing my injectors a couple years ago, my dash readout displays mileage about 2 mpg less than I actually get. I used the pink tops from fiveo. Anyone know how to fix it?
Le Mans Master
Joined: Apr 2002
Posts: 5,726
Likes: 46
From: Waukesha WI
St. Jude Donor '15
You will have to get the ECM reprogrammed. Most good tuners should know what to change to get the readout correct. There was also a thread about it in the C4 Scan&Tune section if you have the resources to fix your own.
I put LS1 injectors in my 90 awhile back and just got to fixing the MPG readout a month or so ago - now it matches up with pump-based calculations - better than it was stock actually.
I put LS1 injectors in my 90 awhile back and just got to fixing the MPG readout a month or so ago - now it matches up with pump-based calculations - better than it was stock actually.
Thread Starter
Le Mans Master
Joined: Jul 2004
Posts: 6,228
Likes: 698
From: Clifton Park, NY ............Clearwater, FL ... 85 Original Owner
You will have to get the ECM reprogrammed. Most good tuners should know what to change to get the readout correct. There was also a thread about it in the C4 Scan&Tune section if you have the resources to fix your own.
I put LS1 injectors in my 90 awhile back and just got to fixing the MPG readout a month or so ago - now it matches up with pump-based calculations - better than it was stock actually.
I put LS1 injectors in my 90 awhile back and just got to fixing the MPG readout a month or so ago - now it matches up with pump-based calculations - better than it was stock actually.
Le Mans Master
Joined: Apr 2002
Posts: 5,726
Likes: 46
From: Waukesha WI
St. Jude Donor '15
No idea. I do my own.
There are a few supporting tuners on the forum that can do this. You may want to check some old posts. Ski-dwn-it and Alvin (PCMforless?) come to mind but there are others.
There are a few supporting tuners on the forum that can do this. You may want to check some old posts. Ski-dwn-it and Alvin (PCMforless?) come to mind but there are others.
