HSV Headers

[chappy]

Can anyone tell me what the advantage of installing extractors over the standard VY HSV manifolds is.

Is there a proven gain if so how much?
Who did the test to prove the gain?

I know alot of people are going to say extractors are the only way to go but hear say isn't proof.

Cheers.

[minux]

The gain is better flow resulting in better bottom end performance. just look at dyno output between stock and non stock and see the difference.

If i ran stock headers on my car it would be making around 20-30 rwkw less simply because of the setup

[chappy]

The gain is better flow resulting in better bottom end performance. just look at dyno output between stock and non stock and see the difference.

If i ran stock headers on my car it would be making around 20-30 rwkw less simply because of the setup

Ok you are talking stock Gen111 manifold ok I am talk HSV type headders.

Are you saying that the stock Gen111 manifolds and the HSV Headded type manifold make the figures.

Where did you pull the 20-30rwkw figure from you quote a dyno figure, where did you get the dyno result so I can go read about it please.

Cheers and thanks.

[minux]

lol, how can you read my own dyno results?

I am talking stock vs defilipo.

HSV ones really arent too different to stock.

[Noy]

Yeah there is a steep climb in the difference dude