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Gtir Motorsport club » Tech room » Help and Advice » afm and induction hard pipe

afm and induction hard pipe

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1 afm and induction hard pipe on 18th March 2016, 2:55 pm

Stu

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Since I have owned my car. Even when I first had it in 2009 I have had to put a small piece of cloth (women's tights) over the maf between the maf and the hard pipe.
If I remove it the idle on my car is shit and it stalls :/
Anyone have an idea why this is?
I'm guessing I need to buy another hard pipe that has better bends in it?


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2 Re: afm and induction hard pipe on 18th March 2016, 4:59 pm

Mr B

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possibly hard pipe or filter & adapter creating turbulence so rmaf reading is wacky.
You could do a test with maf plumbed to bypass the pipe & even the turbo to see effects on idle, also look at filter & adapter effect too. You can get honey comb plates to help smooth the flow. Some people have had real issue with mafs & turbulence while others on almost identical intake setup have none.

3 Re: afm and induction hard pipe on 18th March 2016, 5:44 pm

shroom

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I have seen this issue many times Stu, its well known in the toyota schene too, its called fettish-maf. Your afm develops a real lust for womans tights which is only resolved with the touch of such ladys leg ware. In order to resolve this issue you will need to pin open its opening and make it watch a movie of disturbing things so it snaps out of it. Much like the cure on clockwork orange. Thus creating a perfectly working afm.

If this doesnt work then I suspect its your hard pipe setup Laughing

4 Re: afm and induction hard pipe on 18th March 2016, 5:50 pm

Stu

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Mr B wrote:possibly hard pipe or filter & adapter creating turbulence so rmaf reading is wacky.
You could do a test with maf plumbed to bypass the pipe & even the turbo to see effects on idle, also look at filter & adapter effect too. You can get honey comb plates to help smooth the flow. Some people have had real issue with mafs & turbulence while others on almost identical intake setup have none.
Thanks for the reply mate.
My brother did mention turbulence but I thought that was while driving and not on idle.
I will try another hard pipe one of the days.
I have tried a different afm and its the same..
shroom wrote:I have seen this issue many times Stu, its well known in the toyota schene too, its called fettish-maf. Your afm develops a real lust for womans tights which is only resolved with the touch of such ladys leg ware. In order to resolve this issue you will need to pin open its opening and make it watch a movie of disturbing things so it snaps out of it. Much like the cure on clockwork orange. Thus creating a perfectly working afm.

If this doesnt work then I suspect its your hard pipe setup Laughing

Lmfao i think i will just stick to changing the hard pipe mate lol


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5 Re: afm and induction hard pipe on 18th March 2016, 6:41 pm

Mr B

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That thing with mafs is they can measure very finely even at low flow volumes which good in some respects but also makes them prone to turbulence & other glitches such as dirt.
prefer decent map sensor on turbo cars myself so if you stumble on a wad of cash grab a Link ecu & a map sensor lol .

6 Re: afm and induction hard pipe on 18th March 2016, 6:44 pm

Stu

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Mr B wrote:That thing with mafs is they can measure very finely even at low flow volumes which good in some respects but also makes them prone to turbulence & other glitches such as dirt.
prefer decent map sensor on turbo cars myself so if you stumble on a wad of cash grab a Link ecu & a map sensor lol .

Lol if I stumble on a big wód of cash i will be paying for a full respray. Sod the idle issues lol


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7 Re: afm and induction hard pipe on 18th March 2016, 7:00 pm

Mr B

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you tight tart, haha
couldn't resist the pun lol ...

8 Re: afm and induction hard pipe on 18th March 2016, 8:07 pm

Stu

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Mr B wrote:you tight tart, haha
couldn't resist the pun lol ...
Laughing


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9 Re: afm and induction hard pipe on 18th March 2016, 8:33 pm

gtir_woody

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What hard pipe/ setup do you have at the moment mate?

10 Re: afm and induction hard pipe on 18th March 2016, 8:41 pm

Stu

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gtir_woody wrote:What hard pipe/ setup do you have at the moment mate?

afm and hks mushroom filter on the end..


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11 Re: afm and induction hard pipe on 18th March 2016, 8:44 pm

Stu

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12 Re: afm and induction hard pipe on 18th March 2016, 9:43 pm

johnny gtir

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You need x2 45 stu to make 90 but a single 90 don't work the same it's the flow over the 2 45s and stops back flow pressure

Strange on idle Tho

13 Re: afm and induction hard pipe on 18th March 2016, 9:52 pm

Stu

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johnny gtir wrote:You need x2 45 stu to make 90 but a single 90 don't work the same  it's the flow over the 2 45s and stops back flow pressure

Strange on idle Tho
Thanks Johnny.
I always thought you did but someone recently told me I was talking shite when I said they needed two bends...
I will buy some pipe and get my bro inlaw to weld me one up Smile


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14 Re: afm and induction hard pipe on 19th March 2016, 2:07 am

gtir_woody

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True, I thought that would have been fine

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