MKV intake modification (Modshack prototype)

[mikinoz]

Thanks to Ian from Rennenhaus for working with me to get something to work in the TDI engine bay.

What has resulted is that we are using a Modshack R32 intake as a filter prototype. There was a complete removal of the standard intake before the MAF - and now lives in the shed. The kit that comes with the R32 model filter required only limited adjustment (ie. bench grinding for the bracket and a branch to be tapped before the MAF for the vacuum line).

The bracket is joined at the Earth connection point so the paint on the bracket requires removal.

So down to the nitty gritty;

Deciding the best location for the filter;





After deciding that the best place for airflow was inline with the grille, the following is the result;



Looking through the original air intake area;



Looks very discreet;





Location of plumbing;



Be aware - tight fit - potential rubbing;



Location of the mounting bracket;





The 1000 kilometer review:

Noise: There is a lower tone and some intake drone - nothing like the slurp of a petrol - but notable.

There is slightly more noticeable blow off sound from the waste-gate.

On the highway and around town, not a problem with the noise.

Economy:

At this stage I think there is limited around town economy increase. On the highway, I think that it is saving around .4 - .7 liters per 100 km.

Performance:

Most noticeable is that how much smoother the car is at lower revs. The main problem I had before was the VERY large delay in the lower rev range. This area is smoother and more pleasant than the OEM system.

No great variance on the soot from the rear.

Overall:

I think that as part of the intake, this is a good addition. It will assist with induction of cooler air and more of it undoubtedly.

In a perfect world I would next approach the exhaust on this car, however I am not really willing to invest that amount of money yet.

I would give this solution a thumb up - and as there are not many others out there at this stage, serious consideration if I was contemplating other mods like Chip or Exhaust.

[Mischa]

cooool any reason you picked that particular one?

[Greg Roles]

Cool again, I was hoping you posted it in the diesel section.

[Jaymz]

The more i look at this the more it makes a lot of sense.

Tell us about the cost and also the filter. Is it paper, expected life, ease of replacement, places to get replacements and also cost.

Cheers,
Jamie

[Transporter]

Yeah,
and also, does it have the same filtering performance as OEM filter?
So, it doesn't shorten the engine's life.

[mikinoz]

This is still going strong.

It has been great, and have no complaints.

Service is due so I am going to take it off, and then head to the next dynno day stock - do a run - change over to modshack - and do another run for comparisons sake.

It is a K&N filter so I am of the opinion that it should be safe for the engine and the renewal process is pretty straight forward.

[Greg Roles]

Mate, having a few weeks of inlet research under my belt now, you certainly made a top choice. Phenominal product.

Did you notice on the Mod Shack site they mention the grid in front of the MAF is an 18% inlet restriction, and the greatest one to boot? It's there to smooth the airflow after the 90 degree stock lid top, and they mention it can be removed on fitment of their filter like you have done.

Certainly be in my plan in your shoes you lucky b@stard!

[mikinoz]

Can you link the reference to 18% reduction? I am unable to find it.

[Greg Roles]

No worries, the site does go on and on a bit

Under "Stage 1" link in the upper right of the homepage.

Half way down the page:




Thoughts on:

Panel filter Upgrade: The issue is NOT the Filter medium, but the airbox design itself. Air comes in through a small snorkle, changes direction 90 degrees, flows through the filter, and changes direction another 90 degrees before it heads off into the MAF. It's no wonder the MAF housing needs restrictive vanes and screens (18%) to smooth the airflow.




Then under the pricing:



TTDA general info:


On flow: In the stock airbox, air changes direction twice (90 degrees each time) to get to the MAF. Using the inverted cone filter, air enters the MAF smoothly. So smoothly in fact, that you can remove the plastic vanes and screens from the MAF housing which is the biggest restriction in the intake
system.


http://www.modshack.info/ttda.htm

[Logzy]

Looks great and i'm not at all being negative in the slightest, but isnt this basically a cone shaped pod filter (k&/n or similar) in a round tubular insulated housing.?

I love the fitment of it and the way it sits with the inlet aimed directly forwards, frankly you couldnt ask for a better setup .
Looks like I'll be building myself one to get rid of those two 90deg bends.

With such a simple design theres no reason why a home built unit wouldnt give the same results as this $250+ unit.

Im building myself one.