gas mileage on upgraded ECU
08-22-02, 01:20 PM
#1
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gas mileage on upgraded ECU
How does an upgraded ECU (Pettit, M2 or Apexi PFC) affect gas mileage? I currently have stock ECU with pettit intake, bonez dp and catback. I get really good gas milege (normal driving) and want to find out if an upgraded ECU would change that. I am looking at getting the Apexi PFC.
Thanks
Thanks
08-22-02, 01:53 PM
#2
Re: gas mileage on upgraded ECU
Originally posted by tamerlane
How does an upgraded ECU (Pettit, M2 or Apexi PFC) affect gas mileage? I currently have stock ECU with pettit intake, bonez dp and catback. I get really good gas milege (normal driving) and want to find out if an upgraded ECU would change that. I am looking at getting the Apexi PFC.
Thanks
How does an upgraded ECU (Pettit, M2 or Apexi PFC) affect gas mileage? I currently have stock ECU with pettit intake, bonez dp and catback. I get really good gas milege (normal driving) and want to find out if an upgraded ECU would change that. I am looking at getting the Apexi PFC.
Thanks
08-22-02, 02:18 PM
#3
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not sure what I was getting with the stock ECU since I switched it out 2 months after I got my 7. W/ the M2 I got an average of 23-24 mpg when I drove from FL to WI. City mileage seems to be a little lower my guess is because of the changed fuel maps.
08-22-02, 03:12 PM
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It depends on the car, as each stock ECU has the same map, and works better on some engines than others due to small differences in construction. As a result, sometimes you'll get higher, sometimes lower sometimes the same mileage out your car.
The stock ECU as I understand it overfuels to keep it on the safer/reliable side, so by using a programmable ECU you can better tuned it for your individual motor, and get the best possbile MPG.
The stock ECU as I understand it overfuels to keep it on the safer/reliable side, so by using a programmable ECU you can better tuned it for your individual motor, and get the best possbile MPG.
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08-22-02, 04:24 PM
#8
Originally posted by rx-7ml
zooq, is that on the standard ECU? oh, and is you foot made of lead
zooq, is that on the standard ECU? oh, and is you foot made of lead
If I add in more highway miles, then the average goes up, but normal city driving is aroun 13mpg no matter how I treat the car.
08-22-02, 10:36 PM
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During cruising all the aftermarket "chipped" ECUs should be the same. They only start adding fuel in closed loop mode, so at 0psi/3k rpms. Then, things go quickly downhill 
. Programmable ECUs can be tuned to get even better mileage than stock, which is pretty cool. Lots of people have reported 1-2mpg better with PFC base maps, not a surprise since even the stock ECU is tuned richer than need be.
. Programmable ECUs can be tuned to get even better mileage than stock, which is pretty cool. Lots of people have reported 1-2mpg better with PFC base maps, not a surprise since even the stock ECU is tuned richer than need be.
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