996 3.4 induction kits

[yeti]

Yes, I've done a search and narrowed it down! Looking for a decent induction noise (I miss my 964) and a sharpening of throttle response; if it helps with power... no complaints, but I am not expecting much. Every little helps as they say...

Of the top two items on this page, which is better if price is taken out of the equation?

http://www.design911.co.uk/pages/productList.aspx?...

And if the cold air kit is better, which panel filter to go with?

TIA

[thegoose]

We had a car for a year that had this one fitted:

and it sounded great - it had PSE too which no doubt helped the experience, but you could definitely hear the throaty induction noise.

[dom9]

I have one of these:

http://www.design911.co.uk/fu/prod765/Cold-Air-Ind...

And one of these:

http://www.design911.co.uk/fu/prod304/BMC-Air-Filt...

Which is a fair bit cheaper than the K&N (I got the induction pipe off eBay for about 25 quid or so), gives the same performance and sounds great...

I am still intrigued by these:

http://www.design911.co.uk/fu/prod12796/Aluminum-I...

Just not sure I believe their performance claims...

[yeti]

Hmm, so far one in each camp - any work on which works better or males the better sound? In the 964 days we kept the flat panel, just used an airbox with a lot more flow, the cones weren't great.

The plenum makes some great promises but at £600 it's too much money to take a chance on. If I had £600 spare it'd be going on 200 cell cats.

Anyone else compared and contrasted the 2 filter types, cones Vs flat panel & CAI?

[Ian_UK1]

I used the hose/BMC-F1 combo when I had a 3.4 996. It sounded sensational and noticeably improved the throttle response. The induction yowl at high rpms sounded like an extra 40BHP, but I doubt there was more than a 4-5BHP gain in reality.

A very good, easily reversible, inexpensive mod for the 3.4.

Edit: My concern with the K&N is that it allows hot air from the engine bay into the filter/engine. The standard airbox, modded, still draws air in from outside and is a proper 'cold air' solution. As the ECUs pull timing quite rapidly as intake air temps start to rise, keeping them cool is essential if you want the best performance the car can deliver.

Edited by Ian_UK1 on Tuesday 22 November 10:47

[s_mcneil]

Ian_UK1 said:

Edit: My concern with the K&N is that it allows hot air from the engine bay into the filter/engine. The standard airbox, modded, still draws air in from outside and is a proper 'cold air' solution. As the ECUs pull timing quite rapidly as intake air temps start to rise, keeping them cool is essential if you want the best performance the car can deliver.

^^^This, coupled with the fact it's like a cheap Meccano set in your engine bay... If you must fit a CAI then look into the EVOMS version, head and shoulders above the K&N.

[yeti]

Thanks for the replies - the cone type does have some shielding to keep engine heat away but keeping the standard airbox makes more sense as per the 964. I'll save the £100 for some ally tat for the interior

Having a sports(ish) exhaust already plus this should give me the noise I want, had forgotten how loud even standard air-cooled cars were after listening to a workmate's 993 yesterday. The 996 makes a lovely noise, just... Different. Still Porsche, but different.

[dom9]

yeti said:

Hmm, so far one in each camp - any work on which works better or males the better sound? In the 964 days we kept the flat panel, just used an airbox with a lot more flow, the cones weren't great.

The plenum makes some great promises but at £600 it's too much money to take a chance on. If I had £600 spare it'd be going on 200 cell cats.

Anyone else compared and contrasted the 2 filter types, cones Vs flat panel & CAI?

The reason I went with the standard airbox, and actually, on reflection (you can check my build thread) was that the K&N was significantly more expensive and the heat shielding didn't seem anywhere near as good. I really don't see why it would give any more performance. The claims on the plenum do seem a little out there and it is expensive but I think Sean has one and may have had his car put on the RR. I fancy 200CEL cats when I come home, but I may just get the cat elements welded into the standard cat pipes as it is a lot cheaper and I already have aftermarket exhaust headers and boxes and it is all fitting together nicely at the moment.

yeti said:

Having a sports(ish) exhaust already plus this should give me the noise I want, had forgotten how loud even standard air-cooled cars were after listening to a workmate's 993 yesterday. The 996 makes a lovely noise, just... Different. Still Porsche, but different.

With the panel filter and resonator delete pipe, along with the sports exhaust, your car will sound great. I very much doubt it will be too loud, but it will certainly growl far more than a standard car, even one with PSE etc. It's a lovely noise. Now, writing all this - I am missing mine Have to decide whether to stick with it or sell, depending on whether I move back from Singapore or not!