i've been doing some testing/ messing around with the M30 AFM lately. I've been adjusting the wheel that your not supposed to touch. I have the original spot marked on the wheel with sharpie so i can just switch back and forth, heres what i've found.
my car has a Mark D chip and 19lb injectors,exhaust,4.10lsd, blah blah.I live at 6000ft elevation so results may differ, theres not a lot of air up here.
my ECU is fully adjusted to these "upgrades". results come from my accelerometer and the obvious.I did 17 0-60's while testing i'm not going to bother with the times but just use it as a base line as to whats faster and whats slower.
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with an untampered M30 AFM and 19lb injectors.
Pros- it idles super smooth,no CEL,and starts right up.
Cons-there is no second gear chirp with it set like this and I believe its actually running too lean. this is the setting i was doing the CAI sound videos on and i was noticing a slight lag in throttle response .my car actually runs lean and seems to run out of power at around 5.5-6k.
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with the wheel loosened 2 notches,
Pros-Chirping third getting onto the freeway
........its amazing how different the car behaves, at 3000rpms to 6000rpms it is a completely different car. the second gear shift shock is tons of fun, spins the tires every single run. by far the fastest setting.
Cons-when idling I can smell it running a little rich. after idling for about 2 or 3 minutes the CEL will come on until the throttle is touched. on warm starts the car will start,rpms will go down to 500rpms, and then come back to normal.
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wheel loosened 1 notch
Pros-smooth idle, no drive ability issues, car acts completely normal. still chirps second gear. throttle response is much better than the stock setting.
Cons-??? nothing i guess, the car acts normal,I only got a CEL once and it goes away as soon as the gas pedal is touched
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my guess is that the ECU reacts to a looser AFM door and thinks more air is going in and then adjusts the fuel accordingly, which to a point is a good thing.
what i'm trying to say is unless you tune your M30 AFM you might as well stick to the stock AFM. when i had the stock AFM in my car, it would shift hard but wouldn't spin the tires, with the m30 AFM it barely shifted hard at all. with the AFM adjusted 2 clicks loosed the car feels like it wants to break your neck when it shifts(in a good way) If i'm even turning a little it will kick the back end out.
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have you ever noticed that the day of installing the M30 AFM and The 19lb injectors the car feels really fast but its driving a little rough, and about a week later the car just feels kinda normal. thats because the ECU is adjusting and basically only sending the amount of fuel that the stock injectors would be sending and it doesn't even recognize the AFM. you can reset your ECU and instantly be running rich and a little quicker than before.I beleive the reason that looseneing the AFM triggers the occasional CEL is because the ECU cant correct it. it triggers the 1222 lambda code.
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say what you want, i've driven 2000miles while testing this AFM. I'm keeping the AFM wheel at one notch looser because it drives better than the stock AFM and way better than the m30 AFM w/stock settings.
my car has a Mark D chip and 19lb injectors,exhaust,4.10lsd, blah blah.I live at 6000ft elevation so results may differ, theres not a lot of air up here.
my ECU is fully adjusted to these "upgrades". results come from my accelerometer and the obvious.I did 17 0-60's while testing i'm not going to bother with the times but just use it as a base line as to whats faster and whats slower.
-----------------------------------
with an untampered M30 AFM and 19lb injectors.
Pros- it idles super smooth,no CEL,and starts right up.
Cons-there is no second gear chirp with it set like this and I believe its actually running too lean. this is the setting i was doing the CAI sound videos on and i was noticing a slight lag in throttle response .my car actually runs lean and seems to run out of power at around 5.5-6k.
-----------------------------------------
with the wheel loosened 2 notches,
Pros-Chirping third getting onto the freeway
........its amazing how different the car behaves, at 3000rpms to 6000rpms it is a completely different car. the second gear shift shock is tons of fun, spins the tires every single run. by far the fastest setting.Cons-when idling I can smell it running a little rich. after idling for about 2 or 3 minutes the CEL will come on until the throttle is touched. on warm starts the car will start,rpms will go down to 500rpms, and then come back to normal.
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wheel loosened 1 notch
Pros-smooth idle, no drive ability issues, car acts completely normal. still chirps second gear. throttle response is much better than the stock setting.
Cons-??? nothing i guess, the car acts normal,I only got a CEL once and it goes away as soon as the gas pedal is touched
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my guess is that the ECU reacts to a looser AFM door and thinks more air is going in and then adjusts the fuel accordingly, which to a point is a good thing.
what i'm trying to say is unless you tune your M30 AFM you might as well stick to the stock AFM. when i had the stock AFM in my car, it would shift hard but wouldn't spin the tires, with the m30 AFM it barely shifted hard at all. with the AFM adjusted 2 clicks loosed the car feels like it wants to break your neck when it shifts(in a good way) If i'm even turning a little it will kick the back end out.
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have you ever noticed that the day of installing the M30 AFM and The 19lb injectors the car feels really fast but its driving a little rough, and about a week later the car just feels kinda normal. thats because the ECU is adjusting and basically only sending the amount of fuel that the stock injectors would be sending and it doesn't even recognize the AFM. you can reset your ECU and instantly be running rich and a little quicker than before.I beleive the reason that looseneing the AFM triggers the occasional CEL is because the ECU cant correct it. it triggers the 1222 lambda code.
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say what you want, i've driven 2000miles while testing this AFM. I'm keeping the AFM wheel at one notch looser because it drives better than the stock AFM and way better than the m30 AFM w/stock settings.
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