okay so ive been looking around and i see intake pipes that dont have an afm on them. do you just delete it or what?
afm question
- Thread starter dmiller
- Start date
You can't just delete it. Cars without them have been converted to Speed Density.
EDIT: I am not familiar with the mod the above post is referring to; but, the Maft Pro system has a Speed Density Harness. Once in Speed Density, there is no need for the AFM.
EDIT: I am not familiar with the mod the above post is referring to; but, the Maft Pro system has a Speed Density Harness. Once in Speed Density, there is no need for the AFM.
The AFM supplies part of the equation that the ECU needs to make proper calculations to fuel mixture.
If you remove that part of the calculation the vehicle will not run correctly. To test this, just go out and unplug the connector from the AFM and start the car.
I'm not running a standalone so I can't speak for the details of that; but, I am running the Maft Pro in Speed Density Mode and the Maft Pro supplies the fuel calculations via an Air Temp Sensor instead of the stock AFM.
If you remove that part of the calculation the vehicle will not run correctly. To test this, just go out and unplug the connector from the AFM and start the car.
I'm not running a standalone so I can't speak for the details of that; but, I am running the Maft Pro in Speed Density Mode and the Maft Pro supplies the fuel calculations via an Air Temp Sensor instead of the stock AFM.
^^ and map sensor. (critical.) Any system (piggy back or standalone) that allows you to convert to speed density will allow the removal of the afm.
that said speed density is a highly calculated guess. Works great but better response is said to be had from switching to a true MAF setup. (my plan next summer)
not sure wtf the mod is with jumping pins 1 and 4. ignore that, air flow calculations arent that simple...
also based on your post about a standalone, thats not for you unless you have the cash to get the tune created (think $500-$1000 just in the tune)
that said speed density is a highly calculated guess. Works great but better response is said to be had from switching to a true MAF setup. (my plan next summer)
not sure wtf the mod is with jumping pins 1 and 4. ignore that, air flow calculations arent that simple...
also based on your post about a standalone, thats not for you unless you have the cash to get the tune created (think $500-$1000 just in the tune)
i think if you remove the afm it is due to an aftermarket setup, jumping pins 1 and 4 without an afm or other metering device would seem like it would go into a default mode with preset values in the ecu?
If it was possible to due this i would have done it along time ago instead of buying a new afm.
Put in better words by post above
If it was possible to due this i would have done it along time ago instead of buying a new afm.
Put in better words by post above
grimreaper;1437297 said:
grim, you're an animal! Always pressing forward. I wish I had the time to do that!
A friend of mine is in to the Fox Body Stangs and one of their first mods is to convert away from the factory Speed Density and go to MAF.
^ lol, this car is never good enough (very bad habit). Im always "upgrading", and until i can fork over the cash for a motec, tuning flaws piss me off 
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Exactly what all is required to convert to speed density or maft pro? or are they the same? I know tuning will be necessary i am asking about hard parts, not trying to thread nap either sorry just know it was mentioned here
^ hks vpc system (old) or maft pro with map sensor and ait sensor. (new) Expect about $5-600. Well worth it though as the maft system allows for a LOT of tweaking in various modes.
There are a few other piggy backs that will do this, these two are the most common here though.
otherwise think standalone...
There are a few other piggy backs that will do this, these two are the most common here though.
otherwise think standalone...
what mods are necessary on the intake system for this? i can access the map and iat pretty easily, then would need to buy the electronics. how eay are these systems to install? and is there a base setting? would something like that be compatible with stock injectors, turbo and so on until further upgraded?
You can run the Maft Pro in AFC Mode. This will allow you to keep everything stock and in a basic sense, still tune the car. I ran it this way for around 4 months while I was waiting on my IC Pipe to get welded up. It really made the car peppy. At 11 psi, I was able to beat a semi-built DSM running 17psi. Not a lot of tuning required for AFC Mode.
Converting to Speed Density (SD) requires the ability to mount an AIT sensor. That's really the only "mod" that you'd have to do. Some folks mount it in the 3k pipe; but, it gets heat soaked there. The farther away from heat the better. Notice in my pic below that it's mounted in the lower left corner by the blue coupler. SD REALLY wakes the car up. A LOT more tunability and overall control of the tune. Almost to an overwhelming level. A lot of tuning required for SD mode.
I'm an electronics technician so install was a breeze. The instructions a pretty well written so even a novice can get it done.
Running in either mode requires a wideband. Wideband first. Then tune.
Converting to Speed Density (SD) requires the ability to mount an AIT sensor. That's really the only "mod" that you'd have to do. Some folks mount it in the 3k pipe; but, it gets heat soaked there. The farther away from heat the better. Notice in my pic below that it's mounted in the lower left corner by the blue coupler. SD REALLY wakes the car up. A LOT more tunability and overall control of the tune. Almost to an overwhelming level. A lot of tuning required for SD mode.
I'm an electronics technician so install was a breeze. The instructions a pretty well written so even a novice can get it done.
Running in either mode requires a wideband. Wideband first. Then tune.
89supra7mgte;1437428 said:
If your just trying to get rid of the stock AFM because of "how it looks"
1. MAFT basic....still uses a MAF but can be installed anywhere in your piping so it can be out of sight. some tuning range. fairly inexpensive. turn the dial to change injector size.
2. HKS VPC.... older unit but still used today, replaces the AFM with a IAT and a MAP sensor, has a little bit of a tuning range. Change ROM chips to change injector size.
3. MAFT Pro..... the best bang for the buck, speed density, about as far as you can go with a piggyback. There is a lot of info on this...
4. standalone.... more expensive, many capabilities, professional tune is required.
That is very helpful that engine bay is damn clean might i add. I am more knowledgeable of old mechanical engines (carburetor v-8) So all the electronic tuning is out of my realm so i am learning. AFC= air flow controller or converter? I see them alot on the net, hks or apexi, are those other controllers after you have done away with AFM(bold so that we are still on topic. lol) Or can they be run with it?
I am not trying to do away with the afm i am just trying to get more insight on the tuning capabilities and what would be the best most efficient way to go to build power. something that can run stock components but still be able to adapt to further upgrades when things get to that point.
Standalone, such as the AEM engine management system? How will that adapt to a stock 7mgte setup or will it? or is that a whole other topic?
I am not trying to do away with the afm i am just trying to get more insight on the tuning capabilities and what would be the best most efficient way to go to build power. something that can run stock components but still be able to adapt to further upgrades when things get to that point.
Standalone, such as the AEM engine management system? How will that adapt to a stock 7mgte setup or will it? or is that a whole other topic?
AFC = All For Cash
The Maft Pro is a great starter unit (AFC Mode); but, then you can expand it to SD. Like stated ^up there, it's the most bang for your buck. There are a lot of other units out there; but, hardly any can be upgraded like the Maft.
AFC = Air Fuel Computer
The Maft Pro is a great starter unit (AFC Mode); but, then you can expand it to SD. Like stated ^up there, it's the most bang for your buck. There are a lot of other units out there; but, hardly any can be upgraded like the Maft.
AFC = Air Fuel Computer
So in other words my best bet is to start there and like you said expand, in given time when i get the hang of all this tuning hoopla