HOW TO DO AN ADVANCED SEARCH.

Mon Jul 08, 2013 3:56 pm by Admin


For the benefit of 944Hybrids users there are two search functions available for you to use.
The purpose of this sticky is to explain the "Advanced Search" function because it is much more powerful and is the best choice when researching information.

When you log on to the site a list of options is shown in a line at the top of the page. One option is labelled "Search", use this option (NOT the search box lower down on the right).

After you click on the upper search option, a drop down box appears. At the bottom of this box is a radio button marked "Advanced …

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Air Intake: How-To

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Air Intake: How-To

Post  Porch on Tue Aug 03, 2010 9:45 am

I made a big stink about an air intake earlier, so i thought i'd post up with what i did (i think it came out pretty nice). Of course, there's a million ways to do this, and 2 million ways if you remove the hood latch and pop-up headlights, but anyways...

Pictures:
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So...that's it! It doesn't LOOK like it will clear the hood, but somehow it does. I got the rubber bits from [You must be registered and logged in to see this link.]

The mandrel pipe was $20 on ebay. The straight pipe i just had laying around, but the mandrel piece has a long enough chunk that you could use it for everything.

BTW, i did end up notching the hood latch a little.

EDIT: D'oh, i put "straight 3" instead of 3.5". Oh well, i'm sure you can figure it out Smile
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Re: Air Intake: How-To

Post  944-LT1 on Tue Aug 03, 2010 11:38 am

Quite professional looking!

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Re: Air Intake: How-To

Post  Porch on Tue Aug 03, 2010 12:07 pm

Thanks! Smile

Overall i'm happy with the way it came out.
Also, i'll be getting my car tuned for speed density (MAF delete) because of the cam. I don't think there would be a way to fit the MAF on this setup.
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Re: Air Intake: How-To

Post  modenas on Tue Aug 03, 2010 5:00 pm

how come you didnt do hood pins? you could have cold air under the nose panel and could use that big blue filter
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Re: Air Intake: How-To

Post  Luke714 on Tue Aug 03, 2010 5:33 pm

Where was the MAF on the LS1's usually? Wasn't it inline with the intake duct? It isn't in the throttle body, right? Do most of you have the MAF programmed out or what?

Thanks,
Luke
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Re: Air Intake: How-To

Post  modenas on Tue Aug 03, 2010 5:56 pm

suppose to be right after the filter but you can program your pcm not to have one with certain cams
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Re: Air Intake: How-To

Post  Luke714 on Tue Aug 03, 2010 6:12 pm

so most of you guys use one? What inlet diameter are the stock units, I've got the parts for a 4" intake so can you get an upgraded MAF?
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Re: Air Intake: How-To

Post  Porch on Wed Aug 04, 2010 10:00 pm

I was going to go hood pins, but ....well, this worked!

MAF is 3.5". I don't know that a 4" intake is really worth it. The stock throttle blade is 75mm = 2.95".
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Re: Air Intake: How-To

Post  cfgioja on Thu Aug 05, 2010 12:14 am

I would like to find a way to run my intake into the intercooler area. I have seen it on another 944 but It looks really possible to do compared to the early setup you have alot more room to play with and then have that free space up front once the intercooler is gone.
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Re: Air Intake: How-To

Post  Porch on Thu Aug 05, 2010 8:58 am

I thought i had a picture of it somewhere, but now i can't find it.

Anyways, my old car always ran a 3" intake plumbed through the front of the header panel like you're talking. It was basically a backwards "C" shape. There were a couple problems with it, the least of which being that it was 3" tubing that was crushed down further (to fit between the headlight bar and the hood), the other being that you want as few bends as possible in an intake.

My backup plan was to install hood pins and run the intake straight through where the hood latch currently sits. The opening there is 4" wide by ~2.5" IIRC. Should be enough for a flattened 3.5" pipe. But, for now, i wanted to avoid hood pins if possible.
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Re: Air Intake: How-To

Post  cfgioja on Thu Aug 05, 2010 12:44 pm

is there away to possibly make the straight intake off of the camaro fit where the intake panel would be where you are talking at the latch location and the filter below it so you still get air flor from below?
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Re: Air Intake: How-To

Post  Porch on Thu Aug 05, 2010 2:22 pm

Only one way to find out Laughing
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Re: Air Intake: How-To

Post  Porch on Sat Aug 14, 2010 6:06 pm

After doing some reading on speed density vs. the stock MAF/MAP setup, i decided to keep the MAF. Here's my newest setup. I didn't have any bondo so i haven't had a chance to fill in/clean/sand/paint the welds (and i did it with my crappy $80 HF gasless welder, so it looks terrible), but you get the idea Smile

Ended up using more of the 3.5" mandrel-bent "U" that i bought off ebay. Also, this setup has a lot more clearance for the headlight linkage and hood.

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Edit: did some really terrible photoshop to lighten up part of the air intake so you could see it in the picture, so that's why it looks funny....

I had to hack one of the "ears" off the MAF to get the hood clearance needed. I know the MAF is supposed to be out near the filter, but it just doesn't work with this setup. It's running great where it is, though.
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Re: Air Intake: How-To

Post  Bridar on Mon Aug 16, 2010 8:29 am

That hard right going into the TB kind of bothers me, but I guess you didn't really have a choice being where the hood latch is located.
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Re: Air Intake: How-To

Post  Porch on Mon Aug 16, 2010 9:40 am

Yeah, no choice there...
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Re: Air Intake: How-To

Post  cfgioja on Mon Aug 16, 2010 11:11 am

mine is setup that way too. well for the moment. I would like to do what Eric did to his hood then I can just go straight to the valance with it.
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Re: Air Intake: How-To

Post  B.Rudy on Mon Aug 30, 2010 11:48 pm

First of all hello everyone. I see alot of the regulars in here over and over. I just recently got my project car and am looking fwd to begin the build. A 89 944 turbo chassis, roller.
I have alot to learn about doing these converstion but I do have some technical back round.
After looking at your guys pics of the front hood/latch area I think ill be cutting out the stock hood latch and going with hood pins of some sort as well. this way the intake will be as straight as possible. Which as you guys know is most important NOT to have bends, causing turbulence in front of the MAF.

-Bryan


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Re: Air Intake: How-To

Post  Marky522 on Tue Aug 31, 2010 10:23 am

Posted by B.Rudy "causing turbulence in front of the MAF."

Not to question what your "experience" really is, but how exactly would that hard 90 cause turbulence BEFORE the MAF? You obviously havent seen a Boxster intake system.... Hard 90 DIRECTLY into the intake after the MAF... Dont even get me started about how leaves cause a CEL... I once had this grouchy old tech (at least he acted old...) told me not to trust anyone... And man did he stink.... I swear he was ALWAYS full of crap.....WHEWWW[You must be registered and logged in to see this link.]

Oh and BTW, Hi B.Rudy... Welcome to the board.... Its a pleasure to see another enthusiast not waste his time with a Mustang... Shocked Shocked Shocked Oh and BTW... If you want to feel REAL power you should take a 928 for a ride first....

Mark

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Re: Air Intake: How-To

Post  Porch on Tue Aug 31, 2010 11:10 am

I'm very aware that turbulence before the MAF can be an issue, and i'm also quite certain that it isn't an issue on my intake setup. In fact, if you look at the factory GM LT1 air intake setup, it's very similar to how i did mine!

With the porting i did on the throttle body, i doubt i'm losing more than a few hp on the top end. I made a nice, smooth radius, just like the intake port on a cylinder head Smile

But as always, feel free to make your intake however you like!

....man, i get kinda tired of having my work picked on here by people that haven't even started their swap Razz
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Re: Air Intake: How-To

Post  948 on Tue Aug 31, 2010 11:42 am

Your setup is similar to one I had done using those great rubber elbows....I also tried to run a 90 through to where the intercooler used to be.....I had problems with air turbulence over the MAF though.

For a car that has been programmed to run with a "straight-run' to the MAF; putting a 90° bend right in front of the MAF WILL cause some drivability issues....usually more noticeable at lower RPM's. Also, removing the honeycomb matrix can also worsen the turbulence.
I have first hand experience of this fact. My choices were to re-tune or put a straight pipe back on.
If you are having a full dyno tune done then it is probably a non issue.

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These guys may not be "experts", but they have a better understanding of fluid dynamics than most... Smile
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Re: Air Intake: How-To

Post  Porch on Tue Aug 31, 2010 12:01 pm

Oh absolutely--i would never put a 90* bend right in front of the MAF.

I'm talking about my current setup. It has a very gentle "S" curve to get around the headlight linkage, then a 6" straight shot into the MAF. The 90* bend is into the throttle body, after the MAF. Here's a pic:

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The car runs great, as is, un-tuned. I'll get it tuned once i get a few other things taken care of....
My biggest concern is actually that the MAF is too close to the engine (where it can receive reversion signals through the intake). My cam isn't that big, and it runs well, so i'm not too worried.
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Re: Air Intake: How-To

Post  948 on Tue Aug 31, 2010 9:15 pm

I mentioned that for the benefit of others.... Wink

I wouldn't worry too much about reversion.
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Re: Air Intake: How-To

Post  modenas on Wed Sep 01, 2010 1:18 am

how come you didnt put it directly behind the filter? that what bothers me
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Re: Air Intake: How-To

Post  Porch on Wed Sep 01, 2010 11:20 am

Okay, fair enough Smile

Modenas-there isn't enough room back there, unless i went with a shorter filter. The filter is already kinda small as it is...
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Re: Air Intake: How-To

Post  944-LT1 on Wed Sep 01, 2010 12:15 pm

The factory manual, for my LS3 atleast, states that the computers factory calibration requires that the MAF must be within 10" of the throttle body! My MAF is the card type but regardless, Id say your perfectly fine. True, you'd want to ram air in a straight shot but when you have the computer mail order tuned or dyno tuned, this can all be corrected easily....unless you have crazy bends.

Im probably going to copy your exact setup porch.

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