Since I installed my new intake (Weapon-R) I've had significant decrease in gas mileage. It's been in for less than a day! Do I absolutely HAVE to reset my ECU so that it readjusts to the new amount of air, or not?

 

Sorry to ask questions in your thread, but the same thing is happenning to me too, and all I did was put on a drop in K&N Air filter. Would the same thing happen to me if I didnt reset me ECU, because my gas mileage is going down the ****ter too.

 

no it won't. Maybe it's cause you floor it all the time. Anyway receting the ECU is the same thing as letting the engine just get used to it. After maybe 200-300 miles it should be "reset". After I put my Y-pipe on I reset the ECU right away. Didn't help the ecu just adjusted over time...

 

Note to self: No more lead foot

 

yup thats what happens when u get a power mod. u always wanna open that b!tch up and woot. control yourself and ur gas will go back to normal...

 

how can you tell the gas mileage is bad within a day?

do you have any measurements (mpg) to compare?

 

I know that under normal driving, I get about 100 miles out of the first 1/4 tank. I'm looking at getting about 70.

 

wait til it empties.. the gas meter things alwasy lies to me.. i just fill up every 330. cause when i get to 330 its 1/8 of a notch to empty..and doesnt adding intake supposly theoratically give you better milage if your driving is the same..

 

I got 60-70 miles more per tank since adding my intake and y-pipe...

 

I think you guys are just flooring it more =)

You guys should consider getting new spark plugs and fuel filter, that gave me a big improvement in power and gas mileage.