I have TBI. My warm VE / accel enrich values are pretty dead on. When the motor is cold, it tends to go very lean and spit back up through the intake when I try to slowly take off from a stop. As it gets closer to operating temp, the issue goes away. I don't want to richen the WUE values too much because it already runs rich at cruise when warming up and would foul the plugs. Will retarding the timing when cold help the issue? By default, MegaTune advances the timing when cold.
Thanks!
Cold engine acceleration - spits back up through intake
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Read the manual to see if your question is answered there before posting. Many users will not reply if the answer is already available in the manual.
If your question is about troubleshooting, configuration, or tuning, you MUST include your processor type (MS-I or MS-II) and code version in your post. If your question is about PCB assembly or modifications, you must also include the main board version number (1.01, 2.2 or 3.0). For tuning/troubleshooting questions, please attached a datalog and your MSQ file to your post.
If you have questions about MS1/Extra or MS2/Extra code configuration or tuning, please post them at www.msextra.com Such questions posted here will be moved to: a temporary MSextra sub-forum, where they will be removed after 7 days
The full forum rules are here: Forum Rules, be sure to read them all regularly.
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fordfanboi
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Cold engine acceleration - spits back up through intake
MS II v3.0 (2.920), 408ci, Holley 900cfm TBI, Victor Jr, Mech Roller 254/260@0.050 - 0.642/0.578
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Bernard Fife
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Re: Cold engine acceleration - spits back up through intake
ffb,
You probably want to increase the cold accel multiplier in the Accel Wizard. There is more on this here: http://www.megamanual.com/mt28.htm#tl
Lance.
You probably want to increase the cold accel multiplier in the Accel Wizard. There is more on this here: http://www.megamanual.com/mt28.htm#tl
Lance.
"Never wrestle with pigs. You both get dirty and the pig likes it.” - George Bernard Shaw
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fordfanboi
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Re: Cold engine acceleration - spits back up through intake
Will give that a shot - TY!Lance wrote:ffb,
You probably want to increase the cold accel multiplier in the Accel Wizard. There is more on this here: http://www.megamanual.com/mt28.htm#tl
Lance.
MS II v3.0 (2.920), 408ci, Holley 900cfm TBI, Victor Jr, Mech Roller 254/260@0.050 - 0.642/0.578