INJEN Intake
Thread Starter
Driver
Joined: Oct 2007
Posts: 112
Likes: 0
From: Minnesota
INJEN Intake
I installed an Injen Intake on my 350 about a month ago and the gas mileage sucks! I drove 2 tanks with the cruise set a 79 and only got 25mpg. I was averaging between 27-28 stock. Anybody else seen any problems like this with anyother intakes? I may send it back.
The stock intake already gives you all the air you need, a short ram just changes that from cold air (good) to hot air (bad)... so why in the world would one expect it to improve mileage?
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Thread Starter
Driver
Joined: Oct 2007
Posts: 112
Likes: 0
From: Minnesota
I usually get about 330 per tank as well with my INJEN. But when you are putting in 13.5-14 gallons it doesnt make that good of mileage. My buddy has a Fugita and consistantly get 28-29 mpg. I wonder if I need to reset the computer for the increase in air flow. I wouldnt think so. I have only run 3 tanks through it after the intake, so it is still new.
From what i heard from my shop.. new cars like the 2IS have advanced ECU's where it will recognize more air flow on its own and self adjust the fuel/air ratio. Don't know how true it is.. but if you really want.. tell your shop to remap ur ECU.
Lexus Test Driver
Joined: Sep 2007
Posts: 1,097
Likes: 0
From: Dallas
yes^^ with the simple mods of just an intake an exhaust, our ecu can tell that there is more air and add more fuel.. they are pretty smart! but if you start getting into bigger mods then you you will probably need to get you fuel/air ratio re-mapped