Decrease in gas mileage.

[SiyQ]

After I installed my ZZP Intake, I noticed a huge decrease is my gas mileage.. Any ideas? I also noticed a power decrease.

 

[sonic007]

Any tune? Also are you pressing the gas a bit more because of the intake?

 

[SiyQ]

No tune. I shift usually around 3000 rpms so I know I'm not getting on it more. I went from 355 miles to the tank, to 315 after the install.

 

[Swordsmith]

The ZZP should work all right with the stock tune, although you wouldn't get any more power, you shouldn't get less either. Did you leave the constriction tube in? You do need a tune if you remove the tube. I also had an incident where the tube worked loose and rolled around, randomly constricting the intake... that was inconsistently awful, tune or no tune, but that doesn't sound like what you're experiencing.

 

[SiyQ]

Yeah the tube is still in. I might switch back to the stock air box to see if that was tgr issue, then I can go from there. It's just an inconvenience..

 

[C.E.Divine]

Just a thought, when I did my Redneck intake, I noticed a drop in fuel economy as well. I went back through my data logs, and my throttle input percentage instantly jumped when I put it in. It was all mental. You just have to be conscious of how you are driving.

Tying a helium balloon to your foot should counteract the lead weight that has manifested in your big toe.

 

[sx sonic]

Just a thought, when I did my Redneck intake, I noticed a drop in fuel economy as well. I went back through my data logs, and my throttle input percentage instantly jumped when I put it in. It was all mental. You just have to be conscious of how you are driving.

Tying a helium balloon to your foot should counteract the lead weight that has manifested in your big toe.

I kinda have to agree with this. My gas mileage was not noticeably affected after tuning, putting in the ZZP intake w/o insert, open exhaust, ported intake, ported turbo, or reworking the throttle.

My best mpg with any of these mods was very close, as was my worst and avg mpg. I determine this by running thru several tanks to get a more stable average because unless you drive in laboratory conditions variables can and will show up that affect your mpg.

Looking at gas mileage over several tanks is the only way to get a decent gauge on what mods do for gas mileage. Maybe one tank after the mod was colder, or you got stuck in traffic, or was in a hurry 1 day will give a false indication of what's really going on.


Give it a few tanks and see what happens.