^ lol so true though.




But yeah, sounds like you need to take care of you idle problem before worrying about MPG. Your car shouldn't be dropping to 0 rpm then back up to 1,000 rpm while in idle. Try swapping the intake back to stock and see if that fixes your issues.

 

First thing I'd do is remove that snake oil ETI crap from the car.

the only thing it's doing is making your MAF lie to your ECU.

 

But don't all the intakes come with ETI's or dose no body put them on??? Cuase it's just a little box and the old plugs into if and the new one has plug to the 02 sensor

 

I have a Fujita intake, it does not have an ETI. It just has a hole drilled for the stock air sensor to be inserted into.

If problems started after installing the intake, then.... take it off.

 

Yours is the only one I've ever seen for a 2IS that modifies the electronics of the car.

 

So, where you looking at tank average? Mine showed 2.6 MPG when I did more than a dozen runs at the local drag strip, drove 15 miles back home and my tank average showed 9 MPG, filled up the tank and drove around normally and it was back to the 18ish MPG I normally get. Maybe you were showing tank average (3.6), hit the display to show overall average (30 which seems too high...), and than hit the display again for tank average (9).

 

Ok I'll fill up and see what it reads I don't really drive fast in town and I on a good day I'll be getting 11 in town

 

Check out the AEM cold intake for is350 itsjust how it came

 

................. <------- These are called "periods". Put them at the end of sentences.

 

Sorry nvr really had a use for those lol

 

Yes, I'm saying AEMs intake is the only one that comes with that ETI thing.

Every other intake made for the 2IS works just great without one.

And I suspect that what the ETI thing is doing is lying to the ECU about the MAF readings. Which could certainly mess with mpg.

 

I don't see how this has anything to do with the OP's post

OP, try switching back to your OEM intake, clean the MAF sensor with MAF Sensor Cleaner, don't use anything else as it may damage electronics or plastic. Then let us know how it's doing.

 

But on your intake do you notice like a day and night difference Cuase if I have my stock on it's like a huge *** difference

 

^ I'm sure that's your butt dyno talking. You won't really notice a 20-30whp difference in a car (especially of this weight)... and I'm sure you didn't gain anything close to that with just an intake.

 

No intake can provide an actual "huge ***" difference in performance.

It can provide a huge difference in sound though, and many folks confuse the two.


Now, if you then add in an electronic bit of snake oil that lies to the ECU and messes with the sensors a lot that could certainly make a larger difference (though still no more than maybe a 5% gain in hp, and that'd still be tough to honestly notice) but the ECU will tune the change back out after 100-200 miles.... that's the same crap that is 50 cents in parts that they sell as a "mod chip" for $50 on ebay.

I don't know for certain the ETI unit is doing that, but if there's any noticeable performance gain anywhere but your imagination that's the only thing it could be doing.... because the intake itself sure can't do that.