240Z, 260Z, 280Z Performance / Technical Discussions related to performance motor enhancements, upgrades.

Eliminate AFM

Old 01-21-2008, 06:38 PM
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Eliminate AFM

Does anybody know if there is a way to eliminate the AFM setup on the 78 280z. Can I bypass it somehow? also can I get rid of smog canister on the passenger side?
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Old 01-21-2008, 07:04 PM
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Do you know what an AFM does?
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Old 01-21-2008, 07:11 PM
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its easy, unplug it and find coupler to put in place of it.......
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Old 01-21-2008, 07:35 PM
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lolz, ohhhh noobs.

There are 3 ways to eliminate the afm.

1. 300zx ecu/ maf swap.

2. megasquirt ecu and map swap.

3. carbs

Why u no like the afm? Looking for big power?
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Old 01-21-2008, 08:16 PM
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i hate the AFM too. but i can work around it. but yeah you have to swap out the entire EFI harness/system in order to get rid of the AFM. its probably the most important sensor on your car.
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Old 01-21-2008, 08:26 PM
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ok so Im looking at a large project for this. The AFM is just a pain.
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Old 01-21-2008, 08:27 PM
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why is it a pain? sure its a lil funky looking and out dated... but its not a problem. not like you cant work around it cause its teh size of a bowling ball or something lol.
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Old 01-21-2008, 08:37 PM
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It's not worth it unless you have other mods to back it up in my opinion.
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Old 01-21-2008, 09:49 PM
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Originally Posted by Zfanattic86
ok so Im looking at a large project for this. The AFM is just a pain.
To help us help you, maybe you could explain in more detail what you want to do, so we don't have to guess why you are asking this.

You need to understand how the 280zx fuel injection system works (and efi systems in general). For the ecu to know how much air the engine is taking in (to adjust how much fuel is needed) there must be a LOAD SENSOR... which can be in the form of an AFM, MAF, or MAP.

So... you can either use the AFM, convert to a Z31 MAF, or get an aftermarket fuel management system (like MegaSquirt) and use a MAP.
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Old 01-22-2008, 08:31 AM
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Don't bother getting rid of the "smog canister" , either. I'm assuming you mean the charcoal canister, with the three hoses attached to it. If you have to pass emissions in some states, it is required. It in no way harms performance and it isn't in the way of working on anything in the engine bay. It's just an activated charcoal filter that takes care of any fumes from the motor and the vent lines from the gas tank. Removing it will just make your car smell like gas fumes, and may even cause a problem depending on how you take care of the vac and vent lines (e.g. pressures where you don't want them). If it looks bad, just clean the plastic canister, spray paint the bracket, and replace the vac/vent lines with new ones.
Dave
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Old 02-25-2011, 10:16 PM
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just go tripple webbers FTW!!!
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Old 06-13-2019, 02:55 PM
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Originally Posted by tonsoffun300zx View Post
just go tripple webbers FTW!!!
Does this work?The fuel injected or NA webbers.
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