air induction kits

[McR]

I have just bought a 996 C4s which I love, but it does not have a sports exhaust (shame) Has anyone put on an air induction kit ? If so which one, or is it best to go for the sports exhaust?

[richardb.jones]

PSE without a doubt. Make the car sound like it should for a sports car !

It won't add bhp (nor will the the induction kit..) but it'll change your smile somewhat everytime you boot it ..

[McR]

Thanks

So which would you go for or maybe both ?

[richardb.jones]

Inductions kits will just foul the Mass Air Sensor (especially an oiled one) - the stock box provides more than enough air into the throttle body IMO.

Go for a PSE, adds to the resale where a 3rd party will likely devalue things.

Get an indy to fit - then you can leave out the 'switch' which adds substantial cost to the labour - I take it you want it on all the time ...

I made my own PSE (welding in the bypass pipe) and fitted myself (only hassle was cutting out the siezed manifold bolts..) but well worth the effort - it transforms the car IMO ...

[McR]

Hi how does it foul the Mass Air Sensor

[Slippydiff]

McR said:

Hi how does it foul the Mass Air Sensor

The majority of them use a filter medium lightly soaked in oil, this oil contaminates the MAF (it'll do the same to your warranty too, if you have one)

[Conian]

Yes, avoid induction kits! They do allow higher air flow but it's at a cost of filtration. You dont need 2bhp THAT much when yuo think that it will wank up your engine in time.

[McR]

Pants so I have just wasted £300 on a kit !

[Gaity]

McR said:

Pants so I have just wasted £300 on a kit !

Probably best to search the threads on this forum for a balanced view (before you ditch your purchase) - I would guess at a 50/50 spread of opinion for and against fitting induction kits. I take from the discussion that fitted and maintained properly, an induction kit should not have a detrimental effect on your engine. Like anything really.

[damiangt3]

McR said:

Pants so I have just wasted £300 on a kit !

Which kit did you buy?

I ran a Fabspeed CAI for 2 1/2 years with no issues, I used a BMC F1 panel filter with this, I'm aware that several issues have been raised with over-oiled K&N filters.

All the CAI did was increase induction noise, I certainly didn't notice any BHP/Torque increase.

[Conian]

McR said:

Pants so I have just wasted £300 on a kit !

Well ..... yeah

I once saw a forum of Porsche racers who'd switched back from K&N to standard Porsche filters. Given that a year of racing will highlight potential problems from several years of road use, teams were finding that after 1000 track miles their engines had lost 30% power while running fancy-dan filters, they switched back to OEM filters and found their engines could run to 1500 miles with only 8% power loss.

An induction kit isn't going to knacker your engine anywhere near as quickly as that... but i just dont like them figures!

(But i still use a Pipercross foam filter on my ZX9R!)

[McR]

I’ve decided to go for a PSE and take the K&N induction kit off. Interestingly Porsche at Tonbridge said they only would fit it with the switch, labour 7 hours UG! I will find some other place to fit it as I’m sure I won’t need the switch. They gave me a good price for the exhaust though, I asked for their best price and they gave me 10% off making it £1079.05 inc VAT