Acura RSX, ILX and Honda EP3 Forum banner

2006 RSX Type-S Bad MPG

1956 Views 16 Replies 11 Participants Last post by  G3min1
In my 06 Type-S I’m hitting the gas light at around 220 miles on a full tank while driving economically. I’m posting the list of mods I have on the car that I think would affect MPG and I just wanted your guy’s input on why it might be so crappy. My assumption is that it’s my AEM Short Ram Intake but I’m not sure. Swapped out the spark plugs as well recently.

AEM Short Ram Intake
Injen Exhaust System
CE28 17” Wheels
235/45R17 Tires
Stock ECU
1 - 1 of 17 Posts
Sorry, been MIA for a couple of days but car is at around 85K miles now and turns out my clutch master cylinder was bad so I had that replaced. Also had the mechanics check my internals and sensors and they said the car is in tip-top shape.
Wider wheels and tires will cause your MPG to drop slightly, but not enough to go to 200-220 a tank. When I got wider wheels and tires I went from 345~ to 300~ per tank.
Either you, or have a mechanic do it, remove the throttle body and clean the IACV. I did that to mine and started getting better mileage. Fuel system cleaners help, but that stuff is gunked on there. I had to use carb cleaner and a toothbrush to get that stuff off of there.
Might not completely fix your issue, but I can guarantee it will help.
1 - 1 of 17 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.