aftermarket Z4 air filter... dyno-ed

[Remus325]

In general there are not much hp gains to be made from changes to the air filter anyways. That said it is hard to go wrong with gruppeM. It looks good, feels great, and sounds even better.

 

[CyberTron]

I read somewhere that dyno on like CAI might not show much results becos the car is stationary when it is being dynoed, whereas when the car is on the road, the faster it goes, more air get pushed to the intake.

 

[louis]

that isn't a CAI, just a drop in filter...

 

[Racebred]

this look like the sort of variance you get in between different successive dyno runs anyway. it says nothing to me.

 

[Tanzy]

Looks like a 2.5L to me. I wonder what values are those? Crank? Corrected?

 

[louis]

those are figures for a 2.5L manual but i have no idea what u mean by crank, corrected etc.... that's why i posted it here to ask for input from the more technically inclined....

 

[Tanzy]

Dyno-ed power can be expressed as wheel horsepower or crank horsepower. Correction factor is some simple maths to correct for the humidity and ambient temperature to try and standardise the graphs.

For example, my stock engine dyno-ed at 194bhp after correction factor.