bikeboarder
Well-Known Member
- Joined
- August 24, 2006
- Messages
- 438
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- City, State
- Spokane,WA
- Year, Model & Trim Level
- '91 Eddie Bauer, 92 XLT
i ment 2nd gen explorer.
yeah it works i got mine off of a 5.0 2nd gen. from a junk yard. works good.
is that ur stock throttle body??? cause mine looks way diff.
I thought I remembered reading about this on a another thread.....
The following was posted by screen name "Robert" on 6-20-2000.
The idea is that since it has a larger bore (70mm-75mm vs. the stock 55mm) it will allow more air into the engine than is capable. Similar ideas behind the restrictor plates that are used on some of the faster Nascar tracks. It is a plate with a smaller bore, which reduces the amount of air available to the engine. Both, the smaller and larger MAF may be calibrated properly, but the larger one will still allow more air to enter the engine. Of course the limiting factor then becomes whatever the bore of the throttle body is. If it is also only 55mm, then it won't do any good to put a larger MAF on. When I first bought my MAF from 4.0L Performance, they said that the stock MAF was quite a bit smaller than the throttle body so I should replace the MAF before replacing the throttle body. It takes a given amount of air and fuel to make a given amount of horsepower. I am not sure how much air/fuel for 1 HP, but it is reported to be in a 14.7/1 ratio. Now if the stock injectors are not capable of providing anymore fuel to produce more horsepower, then it won't do any good to get more air into the engine. Same goes with the MAF. If the stock MAF is capable of flowing enough air for the maximum amount of HP the engine is capable of producing in its current state, it won't do any good to have a larger MAF. Pro-Flow Technologies web site shows that a 55mm MAF is good for up to 320 HP on a normally aspirated V8. With that being the case, and if the V6 numbers are similar that I suspect a stock MAF should be good to in excess of 300 HP. So until my engine exceeds 300 HP, it probably wouldn't do any good to add a larger MAF.
Any engineers out there wanna weigh in?