I have read that fuels best temp for combustion is like 400 or something degrees maybe higher. Way hotter than what an engine can handle. Thats from what I can remember. A water injection system will help cool you down. Its on the STI from the factory Im not sure if it was on every year but I have seen a few that it was on. Turbos hate the heat and cools them down giving you more power.

 

Cold air can get you more power, but hot air will give you more more mileage. Hot air is less dense, so the less fuel to keep the air/fuel ratio

My top 2 tips for good mileage:

slow down
drive as if you had no brakes..(anticipate traffic/stoplights and coast as much as possible before you stop)

 

So far my outie is performing a little under for what is rated for....im getting 6.6 litter per KM or 15.7 mpg?

 

Is it new? Don't worry about it, I was getting the same mileage when my Outlander was new. past 3K, you'll see an improvement, if not, then back to the dealer and have it checked.

 

rcpax- he has a 2003,I think, anyway its not an 07 and it has something like 100K on it. What is the mileage ratings for that gen outie I cant remember?

 

Is it a 4g64 or 4g69?

 

Hes the same guy with the jumping rpms, you seemed to think it was a 4G64. I know nothing about the 1st gen outies engine model differences.

 

I think the 04+ models got the 4G69, not sure though, but the mileage per gallon wasnt so good, and from my own personal experience I never managed to get any were near close to the MPG that was advertised and I was "hypermilling".

 

like said above, it is a 2003 with a 100k on it.....i got a few issuse with the car.....so im trying to piece all the info together to get it back on the road right......im not sure what the diff is between 4g64 or 4g69? but i think im off to the dealer soon.....

 

4G64= no Mivec and 150hp, (this is the engine you got)
4G69= Mivec and 162hp

Good luck with the dealer, by the way is it under warranty?