Air flow and "S" bend in pipe

[Jack_and_MLE]

Hello All

I have an air box which with little modification can be fitted to my engine a 1.8VVC on DTH TB.
The inlet of the air box is pointing towards the front of the car, and the air filter on the car is fitted behind the front driver side wheel.

I can fit a 75mm pipe between the air box inlet and the air filter; however it means the pipe will need to make an S shape. The pipe run would be about 1000mm, the pipe is a Revotec non collapsible pipe.

The air box could be modified so the inlet is between cylinder 2 and 3. In this case the pipe will only need a 90 bend and the pipe run about 300mm

Would the S shape create issue for the air flow?
Which solution would be best?

Thank you for your help

Cheers

Jack

[GavinPearson]

There are 2 issues - pressure drop across the pipe from bends and picking up heat from the engine bay.

If the air path looks relatively smooth it'll probably be fine for your engine. I'd insulate the pipe so it doesn't heat up the air being drawn in, that will deliver colder air and therefore more power.