Breathe easy or Breathe OEM?

OEM / Induction / Performance Filter

  • OEM

    Votes: 10 43.5%

  • Induction

    Votes: 13 56.5%

  • Performance Filter

    Votes: 0 0.0%
  • Total voters
    23
I've drilled holes in the airbox - makes a great sound. Easilybreversible - just buy a secondhand air box and drill that and keep your original on the shelf. Cheap and easy and even feels nicer to drive.

However after hearing @5harp3y 's car and seeing the dyno figures I've decided to give one of kits a try - the box turned up today but I'll only get a chance to fit next week, looking very forward to it!
 
5harp3y said:
No real proof of the K&N damaging mafs

Loads of information about this on their website

I've built an induction kit for quite a few people in here
Click to expand...

Hi, can you put together an induction kit for a z4 twin turbo 35is? If so what sort of cost would I be looking at?
Cheers
 
To be contrary, I keep my cars OEM. My logic is that they were designed that way (albeit to a cost compromise) and "bolting on bits" without thorough engineering research isn't my thing. Many will likely disagree, including the sellers, but just my view.:)
 
I understand your logic, but why then would something as seemingly simple such as an air intake which has also been engineered with some thinking e.g K&N or Ramair which is a direct bolt on increase power without effecting reliability? If nobody tried to make things better then things would never improve, just my opinion
 
Last edited:
Ianmc said:
To be contrary, I keep my cars OEM. My logic is that they were designed that way (albeit to a cost compromise) and "bolting on bits" without thorough engineering research isn't my thing. Many will likely disagree, including the sellers, but just my view.:)
Click to expand...

And the world is still flat , . . . . . . . . well, the Netherlands are anyway.;)

Tony.
 
John Thompson said:
Thanks for the link sharp3y, have to say it doesn't look to daunting a project even for me< two good quality/high flow cone filters and two bits of rubber hogger. Wish I had a garage to work in, I really miss mine from my old house
Click to expand...

Yeah looks easy.

But I've seen that kit for £120 so I don't think you'd be able to put the kit together for that much so probably worth just buying it


https://www.mlperformance.co.uk/products/bms-bmw-e-chassis-n54-dual-cone-performance-intake
 
I'd suggest , if you want to improve intake performance, study the following and decide which one to attack first...

Flow - Look at the whole system and concentrate on increasing flow through the most restricted areas from where air enters the system to the inlet valve.

Balance - Look at how the air from the throttle butterfly to the inlet valve can be equalised across all cylinders.

Air-mass - Look at ways to increase the air mass.

Throttle response - Look at ways to shorten the distance from the throttle butterfly to the inlet valve.

Air/Fuel Ratio - Look at ways of reducing the distance from the MAF to the Injectors.

A change in one usually affects one of the others.
 
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