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getting rid of airflow meter

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Old Apr 7, 2008 | 10:43 PM
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Default getting rid of airflow meter

Hi,
I am going for an autronics ecu and this does away with the airflow metre.

What i am wondering is how you attach the air filter then?

I have a silicone turbo intake pipe. Im sure a few of you have this ECU's with this sort of setup.

Pics would probably be a help


Thanks
Jamie
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Old Apr 8, 2008 | 12:32 AM
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i have a simtek fited, the maf is still there, just not connected.

you can get straight sections of pipe to replace the maf section.
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Old Apr 8, 2008 | 01:02 AM
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yeah suppose didnt think of that lol, just disconnect it, hardly a reduction of air flow through it anyway.

thanks
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Old Apr 8, 2008 | 02:47 PM
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What benefit do you get from removing the maf anyway?
I have a HKS ecu that can be set up to be maf free but dont know if its worth while
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Old Apr 8, 2008 | 02:48 PM
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above a certain airflow, mafs cannot read high enough and therefore fuelling etc will be incorrect.
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Old Apr 8, 2008 | 02:49 PM
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Get an air filter and trumpet from Mark @ Lateral Performance to replace the maf sensor. All you will need is a small piece of silicone hose to connect the trumpet and inlet pipe.

Banny
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Old Apr 8, 2008 | 02:49 PM
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the amf is prone to failuer, im running autronics as well
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Old Apr 8, 2008 | 02:50 PM
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Originally Posted by Tidgy
the amf is prone to failuer, im running autronics as well

but he asked about the MAF
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Old Apr 8, 2008 | 02:54 PM
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oops, lol, you know what i mean
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Old Apr 8, 2008 | 03:30 PM
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what is the max air flow the maf can read?
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Old Apr 8, 2008 | 03:31 PM
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not realy the max airflow it can read thats the issue, limit isn't the issue, its just how fragile it is
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Old Apr 8, 2008 | 03:32 PM
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5mv I believe, power wise the sti3/4 maf can read to aroudn 460bhp not sure on on the sti 5/6 maf.

Bany
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Old Apr 8, 2008 | 04:14 PM
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Z32 maf are capable of 500bhp +
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Old Apr 8, 2008 | 04:36 PM
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i thought that maf's aren't that important, as they have a MAP sensor which is after the turbo so it can tell how much air is coming out the turbo end anyway?

am i right?
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Old Apr 8, 2008 | 06:24 PM
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cheers banny mate, I will give mark a ring when I get it all sorted
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Old Apr 8, 2008 | 06:24 PM
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Originally Posted by j16jrf
Hi,
I am going for an autronics ecu and this does away with the airflow metre.

What i am wondering is how you attach the air filter then?

I have a silicone turbo intake pipe. Im sure a few of you have this ECU's with this sort of setup.

Pics would probably be a help


Thanks
Jamie
jamie try micheal at oma as he is the new dealer in northern ireland for simtek as it might work out cheaper m8 and also does away with the maf got my sti fitted with one on friday but run into a few ongoing problems with my car so just have to wait a week or two , too see the result !!! hope this helps m8
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Old Apr 8, 2008 | 10:44 PM
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the deal i am getting on the autronics i doubt it could be any cheaper mate, plus i trust Johnny when it comes to the mapping etc.
We all know OMA are very good, but i will be using AI for mine mate
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Old Apr 9, 2008 | 10:04 AM
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with mine i had cold start up issues at first, few tweaks in the map and jobs a good and fires up no probs now, although my bleedin idle control valves playing up
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Old Apr 9, 2008 | 01:49 PM
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have u bought a set of 550's yet jamie?.....put it like this, my car ran at 90% IDC on the commander at 1.35 bar the other day on the 440's and thats with the FPR and Walbro too, my car at a guess is over the 300 mark....if your going for a 20g and alot more boost and power up around the 370bhp mark id be very surprised if the 440's werent completely maxed out, max on them is supposed to be 350bhp, plus best to leave a bit of headroom, have you been advised to stay with 440's by AI?

Last edited by burt2000; Apr 9, 2008 at 01:58 PM.
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Old Apr 9, 2008 | 01:57 PM
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tbh might be worth leaving the 440's in as the limiter saves risking going to high
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Old Apr 9, 2008 | 05:17 PM
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Definately a good price if the Autronics can be had for Simtek money..

Have the Autronics on mine with ALS ...works a treat and idles perfectly.
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Old Apr 9, 2008 | 09:40 PM
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hi Burt, yeah still have the 440s and with the unichip it was doing 340 and he had to actually take fuelling off at the top end

so they will be fine with the new turbo. cant be sure until the map gets done, but he reckons it will be spot on.


Yeah i have heard about the cold start issues, but generally as you say it just needs tweeked to sort it out
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