stage 2+ cone filters and maf

[Ruan]

I fail to believe that Peugeot spent millions on designing an air intake system for a 90HP Turbo Diesel engine... They will have discovered that at low power, there's no need for a high performance air intake system... They were not worrying about whether the ram air effect is good enough at 70mph on a 90hp engine, when the same engine was producing 110hp on the same inlet, we know the inlet is good at 150hp, but I severely doubt it's good much past that...

Sure you can make more power than that, but you're going to be compromising turbocharger life, the amount of vacuum placed on the compressor will be silly..

They would have said make the air intake system as compact as possible as long as it does it's job at 110hp...

The 136HDi's inlet system is much better...