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4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

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Old 05-05-2009
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Larger MAF?

I know their out there. What is a brand? I want a lil more hp. I know tb spacer or tb's help with this. I don't want any major surgery. Something simple to install. Any Help on this one?
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Old 05-05-2009
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It wont help on a stock truck man. But if you really want one then: http://www.zabteck.com/maf.htm
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Old 05-05-2009
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k thanks oh well 4.0 will have to stay slow...
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Old 05-16-2009
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how would you get that to work? i guess i'm asking what other mods would a guy have to do to get power out of that zabtech unit?
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Old 05-17-2009
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Quote:
Originally Posted by morris View Post
how would you get that to work? i guess i'm asking what other mods would a guy have to do to get power out of that zabtech unit?

Higher rpms on a stock motor. But the stock cams / heads fall off about 5700rpms, and the bottom end balance gets dirty up over 5800rpms.. so there is really no point. If you had a balanced bottom end and ported head (w/cams) then IMO it **might** be worth it.

There is a huge misconception about the MAF meter. Truth is the stock one can be made bigger by modifying the sensors physical crossection. That's the first route I'd take. (you'll have to re-map the transfer function)
Then I'd want to see 5V with at least 500rpms to go. Then and only then would I step up to a aftermarket MAF.

Swaping the MAF does not add power. Most likely these aftermarket MAF's transfer function is skewed and leaning out the A/F. That is most likely where the "perception" of a power increase is coming from.

On my ranger the 1-2 shift is at 5800 and I'm no where near maxing out the stock MAF. Even in below freezing (high DA) weather.

If you want real power increases.. go with a larger exhaust system first.

Rich
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Old 05-17-2009
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you shift at 5800? wow! i shift around 2500 for all shifts from 1-3. then 4 and 5 i'm closer to 3k or 3500
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Old 05-18-2009
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you shift at 5800? wow! i shift around 2500 for all shifts from 1-3. then 4 and 5 i'm closer to 3k or 3500
If your only concerned about low rpms.. then you'll never.. ever... have the need of a MAF that can flow more than the stock one.


Guys.. take the time to understand what a MAF does before assuming an aftermarket one will gain you something.

Regards, Rich
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