What is wrong with ordinary K&N/piper x kit?

[Jackson172]

My old saxo *dont laugh

had a open K&N induction kit, standard cold air feed. I loved the noise, didnt have idle problems and felt OK to drive.


But why is it such a sin on a 172? I really dont wanna pay £250ish for enclosed ebay the 57i K&N kits can be urs for just £90!!

please if that are that bad (BIG loss of power) persuade me against!

 

[16v_er]

Open filters let warm air from the engine bay. Enclosed filters keep induction charge abit cooler, and thus the air is abit more dense for more power than a open filter.

 

[len_beach]

As said above. For best value, you would be better off buying a PiperX foam panel, removing the acoustic valve, uprating the induction feed to a 70mm bore tube either to the base of the wheel arch liner or to the foglight and replacing the inlet elbow with a silicone item. This little lot can be done for £50-60.
I can't see a Viper gaining much on that lot.

 

[MarkM]

If you put the battery in the boot you can have an open filter behind the headlamp.

If you do it yourself cost would be

£50 for batt box
£30 cable and connectors
£90 for ITG maxogen filter and samco hoses and alu joiner

Here is a pic of mine.