Not sure who's interested or not but here goes. This is for i6 cars 01 and newer.
One of the biggest problems plaguing gas mileage with our auto's is of course vacuum leaks. Aside from normal checking of your vac lines for tears and small holes you might want to try the following.
I have been noticing that there were many talking about how the DISA valves on the 01 and newer engines were not sealing as well as the earlier models. I bought a sheet of rubberized gasket paper from Auto Zone a few weeks ago. I then took my disa valve off and measured the area and cut with a Xacto knife two gaskets to fit neatly on the between the valve and the intake when tightened back down.
After doing that gasket I also removed the throttle body and cut another gasket for that part as well. While having all that down I cleaned the idle control valve and where it goes back into the intake, I wrapped a couple of layers of electrical tape there for a better seal.
When buttoning everything back up I gave the gaskets and the taped area's a light coating of white lithium grease for a good seal.
I used to here a slight whooosh when giving the car the gas to pull up in my driveway, that noise is now gone and the car feels to pull much better in the complete rpm range.
I have also noticed better mileage around town driving.
Not sure which part was helped most by the above-but I feel that it did make a difference.
One of the biggest problems plaguing gas mileage with our auto's is of course vacuum leaks. Aside from normal checking of your vac lines for tears and small holes you might want to try the following.
I have been noticing that there were many talking about how the DISA valves on the 01 and newer engines were not sealing as well as the earlier models. I bought a sheet of rubberized gasket paper from Auto Zone a few weeks ago. I then took my disa valve off and measured the area and cut with a Xacto knife two gaskets to fit neatly on the between the valve and the intake when tightened back down.
After doing that gasket I also removed the throttle body and cut another gasket for that part as well. While having all that down I cleaned the idle control valve and where it goes back into the intake, I wrapped a couple of layers of electrical tape there for a better seal.
When buttoning everything back up I gave the gaskets and the taped area's a light coating of white lithium grease for a good seal.
I used to here a slight whooosh when giving the car the gas to pull up in my driveway, that noise is now gone and the car feels to pull much better in the complete rpm range.
I have also noticed better mileage around town driving.
Not sure which part was helped most by the above-but I feel that it did make a difference.