Airflow Meter Question

[billy bob]

I have one of your 72mm bored out Airflow Meters.
What will happen if I install it on my VT ecotec without a tune?
Will it run richer or leaner or just run like crap?

[someguy360]

Should just run normally, just with better air flow.....I doubt you would need a tune for it

[kuzman89]

Not sure if its the same as my airflow meter, but won't it run abit rich? Isn't the mesh there to even out the airflow so the MAF gets a proper reading?

[PRAVX II S]

I have one of your 72mm bored out Airflow Meters.
What will happen if I install it on my VT ecotec without a tune?
Will it run richer or leaner or just run like crap?

It wont make a big difference mate. The O2 sensor will compensate for any extra air. So it wont run rich or lean if the o2 sensor are working right.
Unless you go force induction.

[The1]

As long as the trims dont go out of the 25% LTFT BLM it can adjust, though idle will be out for quite a while till it adjusts.

[delcowizzid]

it will just run like crap without a tune even after tuning you gain nothing what so ever power wise

[MACE]

I have one of your 72mm bored out Airflow Meters.
What will happen if I install it on my VT ecotec without a tune?
Will it run richer or leaner or just run like crap?

It won't run the well, even with the computer taking the changes into account. The reason for this is that the ported MAF characteristics are considerably different to that of the standard item, leaning mixtures out.

With a tune there are genuine gains to be had, don't need to take my word for it, can measure the improvement with a coke bottle, tube and some cordial yourself

Eliminating Negative Boost - Part 4
Modifying the VL Turbo Intake

Hope this helps

Cheers,
Steve

[billy bob]

It won't run the well, even with the computer taking the changes into account. The reason for this is that the ported MAF characteristics are considerably different to that of the standard item, leaning mixtures out.

With a tune there are genuine gains to be had, don't need to take my word for it, can measure the improvement with a coke bottle, tube and some cordial yourself

Eliminating Negative Boost - Part 4
Modifying the VL Turbo Intake

Hope this helps

Cheers,
Steve

So you have no dyno results for this mod, just coke bottle ones.
Has anyone installed one of these without spending $1000 on a tune?

[kuzman89]

here's an idea, install it on your fkn car and see what happens. I don't see why MACE would waste resources doing a crappy maf mod dyno. If these answers aren't enough do it yourself.

[MACE]

So nothing is taken out of context.

I've installed one on my own VS V6 manual without a tune and it felt like it lost power top end.

I've personally never recommended people purchase any maf that deviates from factory spec, unless they're planning on getting a custom tune or a tune to suit due to other mods at the time. Otherwise it would be a misappropriation of funds to do a custom tune just for a larger MAF. The only exception would probably if you already had a wild engine to begin with.

As such we never dyno tested just a MAF upgrade with a custom tune.

If the price of the tune was around the $100-$200 mark for arguments sake then only getting a MAF upgrade for the tune would be more of a worthwhile mod.

Hope this helps,

Kindest Regards,
Steve

[The1]

The PCM has MAF reference tables, The MAF outputs a freqency in Hz, the table then contains the relevent flow rate in Grams per Second of airflow at that Freqency so the pcm can work out how much air is going in, Different mafs have different output frequency's for different volumes of air, so the engine will run leaner or richer depending on the error margin of airflow between the tables and the frequency the MAF is outputting.

[Mr.38L]

Whats the advantages of a larger maf? I was looking at them when preparing my shopping list on mace's site

[MACE]

Whats the advantages of a larger maf? I was looking at them when preparing my shopping list on mace's site

Hey Mr.38L,

The idea behind going a larger MAF or no MAF at all (common with LS1's) is to reduce the pressure drop in the inlet tack, allowing the engine to breath easier. More about the practicalities of the test are shown in the links below

With a tune there are genuine gains to be had, don't need to take my word for it, can measure the improvement with a coke bottle, tube and some cordial yourself

Eliminating Negative Boost - Part 4
Modifying the VL Turbo Intake

Normally an expensive mod, when you consider a custom tune, we should hopefully have a mail order tunes to suit certain vehicles over the coming weeks. This basically means that this mod will become considerably more affordable and worthwhile.

Hope this helps.

Cheers,
Steve

[PRAVX II S]

I dont understand how people think.
How much power do you think you will gain out of a 72mm bored out maf meter?
Read up on the combustion engine and electronics systems on the car find out how they work.
F1 cars spend 1 millon dollars for 1 sec faster.

[Dr HaxZaw]

I dont understand how people think.
How much power do you think you will gain out of a 72mm bored out maf meter?
Read up on the combustion engine and electronics systems on the car find out how they work.
F1 cars spend 1 millon dollars for 1 sec faster.

its not a matter of one part working on its own its a case where a whole lot of small upgrades can make a really big difference... the sum of the whole is greater than the sum of the parts

or at least it goes something like that

[MACE]

I think I'll gracefully lock this thread now considering the initial questions have been answered, and out of fear of people getting personal.

My apologies for the inconvenience