If my gauge is right, Im getting ~30miles to 4.5 gallons of fuel...


Is that possible?

 

yep, lol.

 

Well damn...I guess I need to lean that out.

 

BTW, if Im running that rich, Would the stock injectors, the walbro, and a haltech be able to support 12-13 psi on the stock turbo?

 

6 MPG sound right if your standing on her alot with that huge exhaust.

 

If you have a decent IC (or atleast front mounted the stock) I dont see why you cant go to 14psi.

 

All on 4x 550's?



Ill be able to lean it out some and get better mpg once the Haltech is on, right?

 

The stock ecu really limits the injectors. Getting a standalone or piggy back which removes that limit gives you a lot more room to play with. Just tune it with a wideband o2. If you find the injectors arent keeping up then upgrade.

 

Nice

In that case, Ill just hold off on the 720's until I get a bigger turbo.



And yeah. My plan was to drive the car up to the local dyno right away and use their wideband to see how it was doing.

 

I wouldn't go by the gauge to figure mpg. Too inaccurate. Record mileage & how much you fill each time. The more miles you can do your calculations on, the more accurate the result will be.

Just for reference I'm getting near 20 on average with my setup. Take into account that I drive pretty easy 90% of the time. My overall ave. over 15k mi. is 19.71.

 

Ill have to do that. Im not terribly worried about the mpg though. I know it will only get better with the Haltech.



Now Im super stoked I can use the 550's though That means I can get an even better IC

 

Not impossible, but if you have 6.66 MPG, there is something seriously wrong with your car.

Maybe the devil is in control of it. i.e. 6.66 mpg

 

Whats the max duty cycle the stock ECU allows for the S4 T2?

 

60 or 65, dont remember.

 

I see. FD's is 62% so about the same.

 

Isn't the Waldo just overwhelming the stock fpr and what is needed is to buy a aftermarket fuel pressure regulator??? Why not whip a fuel pressure gauge on the fuel line and find out how much higher you fuel rail pressure is than stock. Sounds like your wasting fuel.

Also maybe buy a afr from http://techedge.com.au/ and find out how toooooo rich you are really running.

 

my mpg is awful that's why i don't drive my car that much cause it cost so damn much.

 

Well thats good and all but I found out what the real problem is ...


Its a hole in the fuel line going from the tank..

 

you didnt smell that eralier (sp?)???

 

HELLO, that'll do it. Good thing you went checking into it.

 

Just got it running again and it wasnt doing it right away.