stage 2+ cone filters and maf

[Mr Whippy]

Were not on about cams, lightening and balancing here, were on about an intake pipe...

Lightening and balancing are not detrimental to power, inlet piping is, it will also f*ck turbos if they are placing vacuum on the inlet pipe as the thrust bearing is being yanked the wrong way...

I've seen.2.5" pipes sucked in by turbos in the past...

I know, but the principle is the same.

Spending money on stuff you don't need means no money for stuff you DO need if you want to make more power.

If there is vacuum on the inlet pipe to that degree that it collapses the intake pipe, then you must have some serious vacuum and simply having a pressure take-off (like the nipples you put in the HDi elbow intake manifold union) would be all it'd take to assess the intake restriction.

I take it the 2.5" inlet wasn't aluminium but was actually silicone or something?


In any event, checking simple figures like pressure drop is easy and makes sure your inlet IS good if it needs changing, and makes sure you don't waste money if it DOESN'T need changing.

It also makes sure if you do mod and it works out worse you will know, or if you mod it and it's not much better, you will know.


Since so many people are desperate to buy shiny metal pipes I might just make some. £150 each for upgraded rear down pipes. Up to 10% gain in power!

Dave