Jetex Induction Kit

I researched the info using www.jetex.co.uk and noted that they listed a 'KMA5' induction kit for the 94' - 98' 1.5 litre Mazda Lantis, and showed a picture of this in situ (See Right) . Whilst looking on this site I noticed that the also produced a new version of their kits called a Direct Cold Air Filter. This is the kit I ended up going for (See below) - hoping that due to its universal fitment I should be able to adapt it to fit.

I ordered this kit (£117.50 all in), which arrived the next morning. The only problem I could foresee was the lack of position to install the sensor, which was currently positioned in the upper part of the original air box. I therefore created a small section of pipe work between the new filter and the original electrical trickery to re house this sensor. To do this I glued a small section of black 68mm rainwater down pipe and then connected the 70mm cone onto this pipe (See below-right). I then drilled a 20mm hole in this piped section to fit the aforementioned sensor. Needless to say I had already had some thought process on this to enable me to order the correct sized kit.

This filter has ducting pipe that connects straight into the end of the cone, giving direct cold air which in turn creates a vacuum inside the cone - therefore sucking more air in what would be the natural entrance of a cone filter. I positioned this pipe into a hole in the under tray of the engine bay, keeping it away from the hot air around the engine. I also created a mesh grill for the end of this to prevent leaves and the like getting into the filter.

Fitting, and fiddling took about an hour all in and the result is great. I must say though that I had already been running a K&N free flow filter in the original box - with ducting from the same position used for the new filter. I had also removed the original resonator box, which took air from above the passenger side wheel arch. This ideally needs to be taken out to allow the ideal positioning of a cone filter and is achieved by jacking up the car and painstakingly prising it out, having removed the engine under tray and part of the inner wheel arch. Not a desperately difficult job, just a tight squeeze.

The end effect is a throaty roar on hard acceleration; nicely visual under the bonnet and improved engine response. I can't say I notice a massive performance difference over my previous set up, though that was in effect a similar set up anyway. It just sounds and looks far better.

To sum the situation up, you could really create a DIY induction kit with little problem. All you need to do is create somewhere to house the air box sensor, between the filter and the electrical trickery in the original pipe work as described above. Then just use an appropriately sized cone filter, and duct some cold air to this.

Sounds easy, doesn't it? Well, it is relatively speaking - I just don't think your Nan would get in done in a day!!