MPG seriously dropped!

chopper_man · Post by **chopper_man** » Tue Feb 12, 2008 8:13 pm

Hey all,

2006 Mustang, V6, 5speed, Roush CAI and single GT takeoff exhaust. Predator U7140 running the latest 05-8R38 software using the 87 performance tune. My MPG has gone from 24-25(before tune) to 17-18(after tune). I've tested this thru quite a few tanks of gas.

Ideas? Suggestions? Everything I've read says my MPG if anything should go up if anything with a tune.

Is there a way to "default" the Predator to an as shipped status? I know I need to put my stock tune back in my car before doing anything. How can I tell if there is anything that is "not right" with the 87 tune?

Thanks!
-Brian

Post by **mikel** » Wed Feb 13, 2008 6:30 pm

There should be no loss of MPG.
Did you make any other changes to the car after adding the tune (CAI?)
Have you done the math (miles driven/fuel used) or are you basing this on the vehicles on board readout?

Thanks

chopper_man · Post by **chopper_man** » Wed Feb 13, 2008 7:36 pm

I don't even have a trip computer. I do the mileage on the gas fill receipt (need to track it for work). Usually it's 250miles (or so) on a 10-11G fill. With the 87 performance tune I'm getting no more than 180 miles on a 10-11G fill.

I drive a LOT, 120M RT every day for this one project I'm on, been on it for 3 weeks so far. Same route and traffic pattern every day for those 3 weeks. I've kicked it back to the stock tune three different times so far. Every time I do I'm back to my normal MPG. It's without question Tune/Predator related.

There are no mods other than what I listed, nothing at all has changed except the tune.

Thanks!
-Brian

chopper_man · Post by **chopper_man** » Thu Feb 14, 2008 10:19 pm

Answered? I don't think so! Guys?
Thanks,
-Brian

christina · Post by **christina** » Fri Feb 15, 2008 9:40 am

Can you get me the CALID of the car?

Go to OPTIONS > TROUBLESHOOTING > SHOW CALIBRATION ID

chopper_man · Post by **chopper_man** » Fri Feb 15, 2008 9:34 pm

Hi Christina,
It's FBIS2M3
Thanks!
-Brian

christina · Post by **christina** » Mon Feb 18, 2008 9:46 am

sorry, was off over the weekend. i'm going to see if i can get someone to look into the tune for that CALID.

chopper_man · Post by **chopper_man** » Thu Feb 21, 2008 7:31 pm

Knock, knock knock?????

Talerno · Post by **Talerno** » Mon Feb 25, 2008 10:56 pm

chopper_man wrote:Knock, knock knock?????

You keep a knocking, but you can't come in.
You keep a knocking, but you can't come in.
You keep a knocking, but you can't come in.
Come back tomorrow night, try it again.

MPG seriously dropped!

MPG seriously dropped!

RE: MPG seriously dropped!