Hi just looking into exhaust modification as mine has cracked twice in 2 track days and at 15 years is probably a tad past it. K series 1800.
I notice a lot of people do the cat removal route however note that power gains are not huge and at $10k fine I don't fancy playing...
I can get a 200 cell high flow cat which should be approx half the restriction of the 400 fitted by manufacturer. Has anyone any experience of this good / bad or indifferent?
I am keen to get a slightly better noise and good flow but dont want to send the computer haywire, it has a pre and post o2 sensor as standard.