How do you lessen true dual fumes at idle with tuning?

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01-15-2005, 06:01 PM

shep28

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How do you lessen true dual fumes at idle with tuning?

I know that fumes are normal with duals and no cats, but is there a way to lessen the fuel smell at idle with tuning? After driving, I swear that if you lit a match, mt clothes would ignite in flames. I am researching how to tune my ltfts now. They are averaging +4.

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01-15-2005, 07:58 PM

Billiumss

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Either go with a smaller cam with negative valve overlap or have a open loop SD tune.

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01-15-2005, 09:09 PM

shep28

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"open loop SD tune" -------What is this?

Would the +12 ltft at idle cause fumes/add more fumes?

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01-15-2005, 09:21 PM

Full-Force

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I dont know whats up with the fumes you guys are getting with true duals. I have never smelled any fumes at idle. Maybe cuz Im on a stock cam and most people that have duals are on big cams. I dont know why but maybe Im lucky.

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01-16-2005, 01:15 AM

luv2spd

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Larger cams burn dirtier. I have reduced the fumes a lot by lowering that area in the ve table. It's still there, but it doesn't burn your eyes to stand behind it like it used to.