Which Air Filters are best for a C43 AMG

[m2287]

I bet it lets loads more dirt in, so how is it better?

It would be interesting to see some stopwatch timings of before and after such a filter mod, especially as the filter is the LEAST restrictive part of the air intake system.

If you really can't bring yourself to use such a mundane item as a stopwatch, meter the MAF output.

I will do this when i get mine, ill let you know the results, might not be for afew weeks, just had my "brake wear, visit workshop" light come up, turns out im gonna need new discs and pads all round. Typical this happens just as im about to service it + ATF change anyway!!!!

 

[Justin1600]

Hi mate, for what its worth I run a K & N Panel Filter on wife's RX8 and you do get a bit more induction sound. It's difficult to say whether you get more power but I have seen articles in Japanese performance magazines were they have dyno'd before and after and the K & N does seem to give a few extra horses. IMO its better quality than the OEM paper filter aswell.

Which RS Turbo have you got, I used have a Escort Rs Turbo Series 2 - great Car!

I have a series one mate, they are great cars and great cars to drive

 

[Justin1600]

I bet it lets loads more dirt in, so how is it better?

It would be interesting to see some stopwatch timings of before and after such a filter mod, especially as the filter is the LEAST restrictive part of the air intake system.

If you really can't bring yourself to use such a mundane item as a stopwatch, meter the MAF output.

You bet or you know? , cos what I know is that I have used these and other performance panel filters over the years and have never had any problems with Dirt getting in the engine.

But I would be interested if you have experience of this happening and I may stop using them as this sounds wrong.

I would also be interested in prove of this aswell, because if huge companys like K&N were making air filters that was letting dirt enter the engine. Then they would be sued for damages

I am sure they improve power very slightly, but are also cheaper then MB paper ones

 

[Dieselman]

I would also be interested in prove of this aswell, because if huge companys like K&N were making air filters that was letting dirt enter the engine. Then they would be sued for damages

By whom? The little Boys that make a mess of their pants while standing in the corner of the Rolling Road bay and listen to the induction roar from their intake.
Do K&N, et al, make any claims that their filters do filter well?

I am sure they improve power very slightly, but are also cheaper then MB paper ones

So the whole intake system creates between 15 and 30 inches of pressure drop, with the filter making less than 1" of that and you think the filter will make a difference..

A few seconds of searching found Air Filtration Test

If you really think the filter is going to make any difference to the performance do some timed runs with the standard one in and then no filter. While you're at it perform some proper pressure drop testing.

I notice your RS Turbo has the bonnet propped. Did you actually test the results of doing that or did you mistakenly think it would improve airflow through the radiator and intercooler. As it is, it is almost certainly reduced the efficiency of both and raised underbonnet temperatures and pressure.

 

[DRBC43AMG]

Looks like a cannon size exhaust at the back

I notice your RS Turbo has the bonnet propped. Did you actually test the results of doing that or did you mistakenly think it would improve airflow through the radiator and intercooler. As it is, it is almost certainly reduced the efficiency of both and raised underbonnet temperatures and pressure.

Could be because the turbo is soooo big the bonnet doesn't close over it

 

[kit17]

I have a series one mate, they are great cars and great cars to drive

Lovely car mate, the series 1 are defo the best, I'm glad to see it spits aswell! What sort of BHP is that bad boy kicking out? Mine had a Ahmed Bayjoo chip and a pace intercooler was dyno proven at 192 Bhp, also had a full system mongoose 4" exhaust plus all the usual upgrades; Brakes, leads, hoses, air filter..............etc.

 

[Justin1600]

I notice your RS Turbo has the bonnet propped. Did you actually test the results of doing that or did you mistakenly think it would improve airflow through the radiator and intercooler. As it is, it is almost certainly reduced the efficiency of both and raised underbonnet temperatures and pressure.

The bonnet is raised up at the back to let very hot air escape. This keeps under bonnet temeratures down. Air that enters between the front of the bonnet and the top of the radiator runs over the top of the engine also and cools down the crossover pipe and top of the inlet manifold, this helps to lower air intake temps.
I have a air intake temp gauge on the inlet manifold, and did see good gains by doing this.

 

[Justin1600]

Looks like a cannon size exhaust at the back

Could be because the turbo is soooo big the bonnet doesn't close over it

Cossie 4x4 Turbo, Mongoose 3" stainless exhaust with a 5" tailpipe

 

[Justin1600]

Lovely car mate, the series 1 are defo the best, I'm glad to see it spits aswell! What sort of BHP is that bad boy kicking out? Mine had a Ahmed Bayjoo chip and a pace intercooler was dyno proven at 192 Bhp, also had a full system mongoose 4" exhaust plus all the usual upgrades; Brakes, leads, hoses, air filter..............etc.

Yours sounded nice mate, Ahmed did the best chips/maps

Mine dyno'd at 265bhp a few years back, thanks for your comments

 

[BenzedUP]

By whom? The little Boys that make a mess of their pants while standing in the corner of the Rolling Road bay and listen to the induction roar from their intake.
Do K&N, et al, make any claims that their filters do filter well?
So the whole intake system creates between 15 and 30 inches of pressure drop, with the filter making less than 1" of that and you think the filter will make a difference..

A few seconds of searching found Air Filtration Test

If you really think the filter is going to make any difference to the performance do some timed runs with the standard one in and then no filter. While you're at it perform some proper pressure drop testing.

I notice your RS Turbo has the bonnet propped. Did you actually test the results of doing that or did you mistakenly think it would improve airflow through the radiator and intercooler. As it is, it is almost certainly reduced the efficiency of both and raised underbonnet temperatures and pressure.

God, your on every thread, don't you have a job or your always on the pc talking rubbish?

 

[Dieselman]

The bonnet is raised up at the back to let very hot air escape. This keeps under bonnet temeratures down. Air that enters between the front of the bonnet and the top of the radiator runs over the top of the engine also and cools down the crossover pipe and top of the inlet manifold, this helps to lower air intake temps.
I have a air intake temp gauge on the inlet manifold, and did see good gains by doing this.

Do an under bonnet pressure and temperature test.
In front of the windscreen is the second highest pressure point on a cars surface and the pressure there will force air into the engine bay, not draw it out as the pressure is greater than that inside the engine bay.
That is why the ventilation intake is located there, to give positive pressure airflow.

You would be better having outlets close to the leading edge of the bonnet behind the radiator and a partial undertray under the engine bay.

I'm sure you don't believe me, but perform some proper testing and I'm confident I will be correct. Even if I'm not you will learn something about airflow and improve the performance of yours.

 

[Dieselman]

God, your on every thread, don't you have a job or your always on the pc talking rubbish?

You mean correcting your twaddle.

Do some proper testing you might learn something. When you have some results post them up.

 

[BenzedUP]

I will

 

[BlackC55]

I have doubted if "performance" filters do anything to BHP. I have the Renntech airbox supplied by Renntech with standard MB filters fitted by Renntech.

 

[Dieselman]

I thought I'd make this easy to understand.

In this picture the aerodynamic pressures are depicted in different colours. Red is the highest going through yellow and green to blue being the lowest.

If you want heat to exit the engine bay take the air in at a high point and exit it at a low one, not try to battle against another area of high pressure which could well reverse the flow.

 

[Bobby Dazzler]

Do an under bonnet pressure and temperature test.
In front of the windscreen is the second highest pressure point on a cars surface and the pressure there will force air into the engine bay, not draw it out as the pressure is greater than that inside the engine bay.
That is why the ventilation intake is located there, to give positive pressure airflow.

You would be better having outlets close to the leading edge of the bonnet behind the radiator and a partial undertray under the engine bay.

I'm sure you don't believe me, but perform some proper testing and I'm confident I will be correct. Even if I'm not you will learn something about airflow and improve the performance of yours.

Assuming that the intention was for hot air to escape when driving then DM is absolutely spot on. However when stationary it will have a positive effect, so if it's a trade off to keep temperatures down when you're waiting in a queue on the drag strip it could go either way.

This will draw air into the engine bay due to the pressure differential. Unfortunately it's unlikely (but not impossible) to pass the intercooler, and so will be of limited benefit.

It could (but not definitely) impair airflow as it will interfere with the what has been designed into the engine bay. To be fair it may not be so scientific in a Mk3 Escort, but certainly modern car design attempts to manage under bonnet airflow.

Why? If you make airflow work for you it is at a cost - usually at the cost of drag. Want downforce (or less lift)? Then it's at the expense of drag. Want cooling (or less heating)? Then it's at the expense of drag. Want sporty body kits to look sexy? Then it's at the expense of drag.

So given the recent drive for efficiency - and developments in processing power for CFD - underbonnet airflow is an integral part of the designed cooling system, and will be based upon a specification.

 

[Bobby Dazzler]

I don't like quoting myself, but...

http://www.mbclub.co.uk/forums/717058-post53.html

 

[Dieselman]

Why? If you make airflow work for you it is at a cost - usually at the cost of drag. Want downforce (or less lift)? Then it's at the expense of drag. Want cooling (or less heating)? Then it's at the expense of drag.

Want sporty body kits to look sexy?

Like this Guy...

 

[Dr-Nab]

wtf!! is that based on an EG Civic?

 

[Dieselman]

wtf!! is that based on an EG Civic?

You seem to know what it is...go on...it's yours isn't it?

Apparently, it's a Civic CX.