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Reload Thread: anyone disable the afm on their chevy??

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    Re: anyone disable the afm on their chevy??

    true, id research how that check engine light can effect the computer and the performance factor.. in my experiance if say a mass air flow sensor buggs out and the dash light comes on, some computers will adjust the fuel ratio to compensate which will kill mgp.. hell, youtube it, there seems to be a video for everything these days. GL op!







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    Re: anyone disable the afm on their chevy??

    Quote Originally Posted by NASTY08IMPALA View Post
    yea they didnt have afm on the older ones...i dont wana do this for performance or speed i only want my voltage to stay up thats it ..when afm is engaged belt slows down and voltage drops to 13.1
    ha spoken like a true BASS head! hope ya figure it out bro




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    Re: anyone disable the afm on their chevy??

    Quote Originally Posted by southernboom88 View Post
    ha spoken like a true BASS head! hope ya figure it out bro
    Thanks bro




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    Re: anyone disable the afm on their chevy??

    telling you man, cant pull sensors car will run bad, I went through this already, gotta tune or run seprate alts, And its not that the rpms change its the alt sensing wire knowing it doesnt need to pull as hard and slows down. Did you know we have a battery saver mode also that will drop your cars volts to a 12.8? You have more issues comeing man




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    Re: anyone disable the afm on their chevy??

    Quote Originally Posted by jteske88 View Post
    telling you man, cant pull sensors car will run bad, I went through this already, gotta tune or run seprate alts, And its not that the rpms change its the alt sensing wire knowing it doesnt need to pull as hard and slows down. Did you know we have a battery saver mode also that will drop your cars volts to a 12.8? You have more issues comeing man
    Idk about ur car but on mine it has auto adjust tensioner and when the afm kicks in ...as long as im not in afm. i will have no problem holding voltage ..havent encountered any battery saver mode...will be gettin a 300a alt next week and already run a aq3500.1 on 2 hdc4.s




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    Re: anyone disable the afm on their chevy??

    go look at zzp voltage booster. there is diff stages but the first one is a volt higher. all it is a resistor inline of the sensing wire.




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    Re: anyone disable the afm on their chevy??

    Quote Originally Posted by jteske88 View Post
    go look at zzp voltage booster. there is diff stages but the first one is a volt higher. all it is a resistor inline of the sensing wire.
    So this is all i need ? lol and i can keep the afm enabled?




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    Re: anyone disable the afm on their chevy??

    Trust me you don't want to disable or tune around this. It actually doest effect mileage considerably. What you want to do for the audio side, is add an external regulator alongside your after market alt to maintain 14.4+ constant.



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    Re: anyone disable the afm on their chevy??

    Quote Originally Posted by wickedwitt View Post
    Trust me you don't want to disable or tune around this. It actually doest effect mileage considerably. What you want to do for the audio side, is add an external regulator alongside your after market alt to maintain 14.4+ constant.
    See i asked about external regulator but got mixed answers...so when i get my alt should i get external regulator? or looks like the stage 2 zzp voltage booster adds 1.2 v to alt charge ...opinions?? yea i dont mind the afm jus for car audio aspect...im more than likely gettin a mechman 270




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    Re: anyone disable the afm on their chevy??

    Quote Originally Posted by NASTY08IMPALA View Post
    See i asked about external regulator but got mixed answers...so when i get my alt should i get external regulator? or looks like the stage 2 zzp voltage booster adds 1.2 v to alt charge ...opinions?? yea i dont mind the afm jus for car audio aspect...im more than likely gettin a mechman 270
    It won't help you when the computer completely shuts off the alt. The computer currently idles (clutches) the alternator to save on things that take "dry" horsepower. You will be strictly at battery voltage during the 3cyl phase. Every other person that's done this with any success has gone aftermarket with their alt and got an external regulator unit to maintain 14v+ from it. This will override the GM cpu from telling the alt to clutch and go idle. Had a local buddy w/ a new model Silverado. He had all kinds of hell with voltage until his A/M and Ext. reg came in.



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    Re: anyone disable the afm on their chevy??

    Quote Originally Posted by wickedwitt View Post
    It won't help you when the computer completely shuts off the alt. The computer currently idles (clutches) the alternator to save on things that take "dry" horsepower. You will be strictly at battery voltage during the 3cyl phase. Every other person that's done this with any success has gone aftermarket with their alt and got an external regulator unit to maintain 14v+ from it. This will override the GM cpu from telling the alt to clutch and go idle. Had a local buddy w/ a new model Silverado. He had all kinds of hell with voltage until his A/M and Ext. reg came in.
    Yea im not lookin to do anything to the stock alt like i said will nost likely be getting a mechman 270 ..should i get the regulator from them or is there a better cheaper route for the reg. thats awesome news that it will overide the clutching of the alt




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    Re: anyone disable the afm on their chevy??

    Quote Originally Posted by NASTY08IMPALA View Post
    Yea im not lookin to do anything to the stock alt like i said will nost likely be getting a mechman 270 ..should i get the regulator from them or is there a better cheaper route for the reg. thats awesome news that it will overide the clutching of the alt
    Aftermarket alt w/ ext regulator= audio problems solved.



    Stupid Loud.

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    Re: anyone disable the afm on their chevy??

    Quote Originally Posted by wickedwitt View Post
    Aftermarket alt w/ ext regulator= audio problems solved.
    Thats too easy lol..like i said should i get the ext reg from mechman ? or whats a decent one to buy?




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    Re: anyone disable the afm on their chevy??

    Get one from them. It is already designed to work properly w/ the alt and should give you 0 issues, whereas a third party one might. Would hate to screw up a good alt I just purchased trying to save $20 on the regulator (brains)



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    Re: anyone disable the afm on their chevy??

    Quote Originally Posted by wickedwitt View Post
    Get one from them. It is already designed to work properly w/ the alt and should give you 0 issues, whereas a third party one might. Would hate to screw up a good alt I just purchased trying to save $20 on the regulator (brains)
    Yea true i havent even priced them tbh ..thanks for all the help




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