Is there away to make the engine run leaner in open loop mode (engine cold)

T

Tommy 00GT

Founding Member

Feb 13, 2000

122

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Bay Area, CA

Oct 20, 2005

#1

• Oct 20, 2005

• #1

Because my engine runs extremely rich when it is cold so it's horibbly killing my mileage. As I understand, the only reason an engine runs rich when cold is to quickly warm the catlytic coverters up, which I do not care for.

 

A

autoXstang

New Member

May 7, 2005

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Oct 20, 2005

#2

• Oct 20, 2005

• #2

purchase a hand held tunner and play with the fuel curves?

 

twogts4us

15 Year Member

Apr 1, 2004

4,188

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79

Dunedin, FL

Oct 20, 2005

#3

• Oct 20, 2005

• #3

In the time it takes to warm the engine, do you really feel you are burning that much extra fuel to make a noticable difference?
And how are you determining you are running "extremely rich when it's cold"?

 

T

Tommy 00GT

Founding Member

Feb 13, 2000

122

0

0

Bay Area, CA

Oct 20, 2005

#4

• Oct 20, 2005

• #4

twogts4us said:

In the time it takes to warm the engine, do you really feel you are burning that much extra fuel to make a noticable difference?
And how are you determining you are running "extremely rich when it's cold"?

Click to expand...

I can smell it pretty bad when the engine is cold. Smells almost like the time when I had no cats

 

Gearbanger 101

Straight Outta Locash

20+ Year Stangneter

Aug 10, 2002

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Ontario, Canada

Oct 20, 2005

#5

• Oct 20, 2005

• #5

What's the mileage on your car? Maybe you're due for some new O2 sensors?