deadbugdug
Registered
...Does the MAF care how far away it is from the throttle body? How close to the TB can it be?
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Distance between MAF & TB
- Thread starter deadbugdug
- Start date
RE: Distance between MAF & TB
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...Does the MAF care how far away it is from the throttle body? How close to the TB can it be?
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Only as it relates to changes in the flow pattern.
Too close to the throttle body and the MAF may sit in a vacuum or eddy.
[div class="dcquote"][strong]Quote[/strong]
...Does the MAF care how far away it is from the throttle body? How close to the TB can it be?
[/div]
Only as it relates to changes in the flow pattern.
Too close to the throttle body and the MAF may sit in a vacuum or eddy.
RE: Distance between MAF & TB
Again, if distance was the only variable, then no - there is no difference.
Distance is rarely the only variable however. The distance of the intake route affects pressure differentials (Bernoulli's principle), and changes in the shape of the intake can change air flow vectors.
This is why it is suggested that most cars get a custom tune if they upgrade their MAF.
I can't tell you how many times I've seen a post about somoene complaining about an upgraded MAF not working properly. 9 times out of 10 they didn't get their MAF remapped for their custom application.
Again, if distance was the only variable, then no - there is no difference.
Distance is rarely the only variable however. The distance of the intake route affects pressure differentials (Bernoulli's principle), and changes in the shape of the intake can change air flow vectors.
This is why it is suggested that most cars get a custom tune if they upgrade their MAF.
I can't tell you how many times I've seen a post about somoene complaining about an upgraded MAF not working properly. 9 times out of 10 they didn't get their MAF remapped for their custom application.
deadbugdug
Registered
RE: Distance between MAF & TB
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were you thinking about making a custom cowl induction air intake system or what??
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Yeeeeeeup. Cowl induction hood scoop is on its way, and I *hate* how the induction hides the valve cover and that half of the engine in general.
Other than visual appeal, why have the hood scoop if it isn't functional?
Figuring out, and building, a new tube is proving to be a challenge, especially physically adapting it to the TB. I've come up with a couple of options: Auto parts stores sell "kits" with all sorts of plastic elbows and tubes you put together & send off to a company that will build you a new tube derived from your assembly job. I haven't researched the cost yet, and it doesn't address the TB adaptation problem. I could cut my factory tube off right after the elbow from the TB and attach a new tube, but adapting the new tube to the odd shape of the old tube will be fun in itself. I may be able to find a rubber elbow that will adapt straight to the TB, but how to attach it? Is there enough of a lip there to use a hose clamp? I've even entertained the thought of getting a metal elbow, cutting it and welding in extra metal and working it to get the oval shape to fit over the TB, and adapting a new "curly cue" tube to the new elbow that will put the MAF and filter near the base of my windshield, or at least close to the back of the hood scoop.
At any rate, I'll need to get the hood scoop installed and see how much room I have to deal with. I'm not afraid to listen to new ideas or suggestions, so enlighten me if you so desire......
[div class="dcquote"][strong]Quote[/strong]
were you thinking about making a custom cowl induction air intake system or what??
[/div]
Yeeeeeeup. Cowl induction hood scoop is on its way, and I *hate* how the induction hides the valve cover and that half of the engine in general.
Other than visual appeal, why have the hood scoop if it isn't functional?
Figuring out, and building, a new tube is proving to be a challenge, especially physically adapting it to the TB. I've come up with a couple of options: Auto parts stores sell "kits" with all sorts of plastic elbows and tubes you put together & send off to a company that will build you a new tube derived from your assembly job. I haven't researched the cost yet, and it doesn't address the TB adaptation problem. I could cut my factory tube off right after the elbow from the TB and attach a new tube, but adapting the new tube to the odd shape of the old tube will be fun in itself. I may be able to find a rubber elbow that will adapt straight to the TB, but how to attach it? Is there enough of a lip there to use a hose clamp? I've even entertained the thought of getting a metal elbow, cutting it and welding in extra metal and working it to get the oval shape to fit over the TB, and adapting a new "curly cue" tube to the new elbow that will put the MAF and filter near the base of my windshield, or at least close to the back of the hood scoop.
At any rate, I'll need to get the hood scoop installed and see how much room I have to deal with. I'm not afraid to listen to new ideas or suggestions, so enlighten me if you so desire......
RE: Distance between MAF & TB
that project sounds pretty intense. Here try buying like 3 inch furnace duct piping to get an idea of what type of bends you need then go to a plumbing store to ge the neccessary pieces; since it's your first time this will be the cost effective method to go and if you find it extremely difficult or impossible or impractical then you only spent a few dollars on it. The TB on the mark 8 is kind of confusing but you should be able to find something. I'm sure you could just cut off like 3 inches from the end of the mark 8 intake pipe, there's plenty of wrecked mark 8s with that part so just do that instead of killing yourself to figure out something custom. A while back I used to have a sunbird and I turned over the air intake box and put a few rubber bands around it so it would hold the air filter on. That seems like the type of route you could go to get cowl induction to work. Hopefully you can wrap this up soon, then it would give me incentive to make a fiberglass hood for this car!
that project sounds pretty intense. Here try buying like 3 inch furnace duct piping to get an idea of what type of bends you need then go to a plumbing store to ge the neccessary pieces; since it's your first time this will be the cost effective method to go and if you find it extremely difficult or impossible or impractical then you only spent a few dollars on it. The TB on the mark 8 is kind of confusing but you should be able to find something. I'm sure you could just cut off like 3 inches from the end of the mark 8 intake pipe, there's plenty of wrecked mark 8s with that part so just do that instead of killing yourself to figure out something custom. A while back I used to have a sunbird and I turned over the air intake box and put a few rubber bands around it so it would hold the air filter on. That seems like the type of route you could go to get cowl induction to work. Hopefully you can wrap this up soon, then it would give me incentive to make a fiberglass hood for this car!
deadbugdug
Registered
RE: Distance between MAF & TB
Yeah, as I look at things, intense is a good word. The furnace ducting is an EXCELLENT idea as it will form with hardly any effort -- thanks for that!
Unfortunately, Unlimited Products sez it will be 4-6 weeks for my scoop to show up. Plus, the body shop I'll be using for the body & paint work isn't even built yet. Hopefully by the end of July, but I should be able to start playing before then.
And what's this about making a hood for my car? I may be sad that I wasn't aware of the offer before I bought the scoop!
On a side note, I was looking things over as I installed 2 new front air springs & a spider valve, and if I decide I can live with that atrocious factory tube and it's placement, then I might add something like a NASA scoop to the front passenger corner of the hood. That would make the cowl induction scoop, well, pretty much useless (except the bada** look), but maybe having both scoops would be quite the conversation starter.
Yeah, as I look at things, intense is a good word. The furnace ducting is an EXCELLENT idea as it will form with hardly any effort -- thanks for that!
Unfortunately, Unlimited Products sez it will be 4-6 weeks for my scoop to show up. Plus, the body shop I'll be using for the body & paint work isn't even built yet. Hopefully by the end of July, but I should be able to start playing before then.
And what's this about making a hood for my car? I may be sad that I wasn't aware of the offer before I bought the scoop!
On a side note, I was looking things over as I installed 2 new front air springs & a spider valve, and if I decide I can live with that atrocious factory tube and it's placement, then I might add something like a NASA scoop to the front passenger corner of the hood. That would make the cowl induction scoop, well, pretty much useless (except the bada** look), but maybe having both scoops would be quite the conversation starter.