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Air-induction...


A8Mark
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Just fitted a air-induction kit to the mighty A8 and not a hard job at all,so far.... 169144-ok.gif

As all u fellow A8 4.2QS ppl know the mighty A8 engine is a quiet one to say the least,well fitting a induction kit imo brings the car to life.

The sound is awesome, not to loud inside the car but from outside its the dogs b#llocks as they say. grin.gif

Throttle responce is a lot better and improves the car imo.. 169144-ok.gif

All i need to do now is sort out the cold air pipe work(using old airbox cold pipe work at mo),plus make up a bracket to hold my monster air filter... grin.gif

With my new quad exhausts being fitted in a couple of weeks the car should sound the bee`s knee`s(imo)... jump.gif

Will post some pics l8rs... 169144-ok.gif

Mark...

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Not to be funny with you Mark but go out and buy a decent air filter, I know they look cool and are really cheap but the flow rate/pannel area would be about a 1\4 of the size of the orignal A8 air filter. I know your testing to see if you like it(if you do buy a decent airfilter) If you do buy one get one with a flat end cap for NA cars. This can bounce the air pulse back into the inlet track 169144-ok.gif

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Indeed u are correct,i only bought this as a test to see if it was possible to fit one to the mighty A8. znaika.gif

I was not going to buy a decent filter if there was a chance i could not fit it correctly or it might not work with the maf sensor.

Tbh this filter may look different and not do the job properly for ur car but it works fine on mine.

As for the panel area being 1/4 of the size well yes your right it is, but remember the intake pipe work on the original air intake system is only 2 small pipes,where the kit one is twice the size(meaning more air flow than standard)imo.

I will indeed be buying a new larger filter when needed but till then it works fine. 169144-ok.gif

mark..

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The process is very easy indeed... 169144-ok.gif

All you need is a induction air filter with a 77mm outlet(make sure you get one that will fit in the gap left by old airbox),some tape,cross head screw driver and a tie-rap.

1.Remove cover to airbox this has the MAF sensor in it,its held by to screws undo and unplug wiring.

2Leave the bottom of the airbox inplace as this acts as a heat sheild from the zorst manifolds.

3.Leave all cold air pipe work inplace and also the pipe work that runs to the back of the engine unit.

4.As you will see the Maf sensor is set into a 77mm piece of pipe work,so the induction filter you use must have a 77mm diameter,this will just slip over the MAF sensor pipe work.It will only just go on so you will need to fix it with some kind of tape(electrical tape works fine).Then just for added fixing put a 80-90mm hoseclip around it and secure it firmly.

5.When all this is done you should have the air filter and maf sensor fixed together,insert the other end of MAF sensor back into original pipe work and plug in wiring loom plug.

6.You can either make a bracket up to secure the filter or do as i have for time being use a tie-rap. tongue.gif

Heres a picture of the finished artical..

Filter2.sized.jpg

This has imo improved the responce of my 8 and the sound is awesome... 169144-ok.gif

Good luck.... 169144-ok.gif

Mark....

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  • 4 weeks later...

I think you are right - hasn't made any difference on the sound front and power - can't really tell either!! I think a new exhaust is your best bet...albeit slightly more expensive!! I used to have an impreza with a prodrive box and induction kit and it sounded very fruity and was very loud!

I think the V8 rumble is more seductive though!!

Jamie 169144-ok.gif

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You need a dome filter with a 77mm outlet for the maf senser to fit too.

Heres a pic of the one ive installed on my A8 4.2...

Filter2.sized.jpg

Its an easy job to do...

Take off old filter box lid and remove MAF senser from lid(held in by two screws).

Leave bottom half of filter box in as this has the pipe work for the cold air intake already inplace, it also acts as a heat shield from the zorsts.. 169144-ok.gif

The filter you buy must have a 77mm outlet hole for the MAF senser to fit to,this is abit awkward to fit and needs to be pushed on then secured with electrical tape firstly then a jubilee clip.

With the MAF senser fitted to the new filter slide the other end onto the existing pipe work and secure with jubilee clip.

Plug the MAF senser wire back into is sockets and then secure filter with some sort of bracket(At mo mines secured with a tie-rap).. grin.gif

It sounds awsome until you fit new custom zorst to your car then you can hardly hear it..lol.

It does improve responce imo,so worth doing!!!!

Good luck!!! wink.gif

Mark...

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ta, i already got the 77mm bit, thats where k&n didnt want to help.

Don Marshall [[email protected]]; on behalf of; UK.SALES [[email protected]]

Hello

Thank you for your enquiry. Unfortunately I have no way of knowing which kit was used unless you can obtain this from the writer of the link.

Regards

Don Marshall

-----Original Message-----

From: Stuey

Sent: 08 February 2005 17:22

To: UK.SALES

Subject: 57i induction kit for Audi A8 4.2

Hi,

I’m after an induction kit for my Audi A8 4.2 1996. I know you don’t manufacture one but I’m wondering if you could supply me with a model number that would have a 77mm outlet as described in the link below.

http://www.tyresmoke.net/ubbthreads/showflat.php/Cat/1,2,12,15,22,25,26,27,3/Number/305623/an/0/page/8

Thanks

frown.gif

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  • 4 months later...

Once I've tried that kind of stuff. Results measured by G-tech (i know, I know ) were not impressive. In fact I could fell performance were little worse than with standard air box and filter.

The one I was using was JR product, with destination up to 400HP, and also hand-made (alu plate) heat reflector to separate it from engine was mounted. Using termometer probe (my radar detector is equiped with one) I was able to see, that even with such shield temperature in the inlet, just inside the filter was higher by 15 to 20 degrees C.

And that in my opinion is answer, why it did not work as desired.

So, the crucial wll known think is to supply cold air to the cone, which in A8 with its rather hot bay engine can be difficult.

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