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MG MGF Technical - Uprated K&N air filter

Several moths ago there was some talk that a new K&N air filter was being developed which would use a closed airbox to effectively force cold air in. This will presumably give performance gains over the standard 57i filter.

Does anyone know what became of this? I have just visited the K&N site and found this:

The D-CAF filter utilises a specially adapted JR double cone to effectively force cool air direct into the air intake system of the engine. This results in increased BHP and torque, improvement in rev response throughout the RPM range and improved overall driveability.

Anyone know if this is the K&N series 2 filter and if it will work on an MGF?
Jonners

Hello

The JR D-CAF unit has been released by JR who are a seperate company from K&N. The materials used and concept are very, very similar but JR tend to be 10% cheaper!

As yet K&N have not released a Gen 2 kit for the MGF and their tech can give us no idea of a possible release date.

Regards

Lesley
Lesley

K&N Does not have a series 2 (phase 2) filter available (yet?). Besides, after seeing some of them, we decided to set up our own line of products. (we don't really see much advantage in just shutting off the area around the filter. We do see more advantage in the RAM effect (call it an ultra soft turbo ;))

Our product (Hurricane Performance Airbox) consists of a cone-shape airfilter (same as in 57i) with a venturi on top and an airbox (cone shaped aswell) around it.

We're designing kits for several cars now. It's beeing tested on a few Elises and a Seat Leon Cupra (V6). Results are VERY good. Looking at the K-engine, it seems to be that the engine revs faster from 3-4k which is exactly where you'd normally find a dip in the K characteristic.

We will do RR comparisons with the Elise's as a basis for our campaign, but after doing some back to back tests, we are already 100% sure that the airbox brings in just a bit extra power. (and sounds great too!)

After market release of the Elise and the Cupra, we will probably head on with the MGF and the Subaru Impreza.
Target price will be around EURO 225,- (but that's fully dependend on the extra stuff needed to have a good fit for the airbox..
Yvo Tuk

...and to complete the picture the already established ITG kit provides all these advantages.

Rog
Roger Parker

And don't forget the 'flobbadob' flower pot air box conversion! ;o)

Cost: 3
Rob Bell

Has anyone here fitted the ITG air filter? Is it worth getting I already have a 57i so is the cash worth spending?
Ashley

From what i know its better than the K&N, looks the nuts. costs quite a bit over 200.

If you already have a K&N then it probably isn't worth it. th eimprovement over the K&N will be small, and smaller than the comparison from standard to fitting the 57i.

its up to you, how much do you want that slight improvment in power and driving characteristics
Matt

Ram effect is negligible, especially at road speeds. Maybe at 200mph you might get a little bit of effect.

Getting cold air in from outside the engine bay is important.

Mike
Mike Bees

Rob - did your (or should we say the elise enthusiats') flower pot idea work? I.e. does it make any difference whatsoever? If so are there any pics of what you've done on the web?

Also if I do this how, exactly, would you explain the concept to your insurance company ;)
Jonners

Jonners- I haven't RR tested the set up, but you are right that this clever bit of cross fertilisation ;o) from the Elise BBS does actually work- an improvement to driveability and a perceptable improvement in mid range torque. For the outlay, the thing is hard to beat!

Still trying to chase up on a more 'formal' solution- but no joy as yet :o(

No pictures on the web of a flower pot install on the web as yet- may be later in the year when I get time.

As for explaining it to an insurance company, I'd recommend patience!
Rob Bell

K&N 57i = 90
ITG = 200+
Yvos airbox = 140

Previous comments have suggested that the ITG is better - but question whether it is worth the extra money. Yvo's airbox falls between the two - I'm awaiting his rolling road results with eager anticipation :o)
Dot

I made a wrap around heat shield/duct out of pollished aluminium for my 57i installation a few weeks ago, inspired by Robs flexible heat shield/duct.

The shield/duct is a couple of inches longer than the filter body when wrapped around the filter and is open at the ends to drain water sucked into the twin plastic pipes which vent onto the filter through a tight fitting hole in the side of the shield. The gap between the filter and the shield around its circumference varies from about 30mm min to about 100mm where the pipes enter.

The pipes and shield are held in place with multiple thick cable ties. The shield itself is held via ties though holes in the upper engine cover bulkhead near the holes for the engine cover bolts. The whole arrangement seems pretty sturdy. Can't comment on what it would be like to drive without the heat shield as they were both fitted at the same time, but it does appear to slightly 'mellow' the noise heard on acceleration from other cars fitted with the 57i.
Paul

I made a wrap around heat shield/duct out of pollished aluminium for my 57i installation a few weeks ago, inspired by Robs flexible heat shield/duct.

The shield/duct is a couple of inches longer than the filter body when wrapped around the filter and is open at the ends to drain water sucked into the twin plastic pipes which vent onto the filter through a tight fitting hole in the side of the shield. The gap between the filter and the shield around its circumference varies from about 30mm min to about 100mm where the pipes enter.

The pipes and shield are held in place with multiple thick cable ties. The shield itself is held via ties though holes in the upper engine cover bulkhead near the holes for the engine cover bolts. The whole arrangement seems pretty sturdy. Can't comment on what it would be like to drive without the heat shield as they were both fitted at the same time, but it does appear to slightly 'mellow' the noise heard on acceleration from other cars fitted with the 57i.

I've took a few photos but the're not back as yet
Paul

whoops!..sorry about the repeat
Paul

This thread was discussed between 14/10/2001 and 16/10/2001

MG MGF Technical index

This thread is from the archive. The Live MG MGF Technical BBS is active now.