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Hi guys,

I've been slowly buying parts to upgrade my car

I've got turbo (HKS GT2535), intercooler (Cooling Pro Stealth Series for R34), front pipe (JJR Bellmouth)

Is a cat from a R33/R34 bolt straight on? I'm looking at a magnaflow 3inch cat that has been flanged already and want to that it will bolt straight on

I'm going to custom the cat back (don't want a cannon tip and can't find what I want around)

the last bit is the suspension - this is proving to be a nightmare...I don't know that the group buy is still going...if it's not going - that what options should I go for (don't want coilovers - too much hassles and I have read the suspension thread and made even more confused :D )

Edited by BigDirtyJase
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Yes, 34 and 33 cats use same flange pattern, bolt on.

Have you considered one of these ? Mine came with the flanges, bolted straight on, very happy with it.

http://www.metalcat.com.au/

http://www.skylinesaustralia.com/forums/me...mp;hl=catalytic

http://www.skylinesaustralia.com/forums/Me...mp;hl=catalytic

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I fitted a JJ Bellmouth and Hi Flow X Force Cat. Fitted perfectly on my S1, with a 3" Cat back, as supplied

Increase in power most noticeable and saving about 2l/100 in fuel.

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Yes, 34 and 33 cats use same flange pattern, bolt on.

Have you considered one of these ? Mine came with the flanges, bolted straight on, very happy with it.

http://www.metalcat.com.au/

http://www.skylinesaustralia.com/forums/me...mp;hl=catalytic

http://www.skylinesaustralia.com/forums/Me...mp;hl=catalytic

yeah I would love to get a metalcat but there are none around and I have spoken to some exhaust places around my place there is a massive back order for these...they recommended me to go mangaflow (that's my second choice) or to wait (which I can't)

If I can find a metalcat that I can get straight away then i'll buy one

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just get the x force metal cat. cheap and good. be sure to get the high flow one its worth it.

Thats the one I got from JJ. Also put in a new O2 sensor at the same time.

I just came op the mountain and the difference with the X Force and bellmouth is amazing.

Before it was like 3 grand plus and 4-5 psi to keep at 60kph, now it comes up at 2and a bit with no boost, so in effect the S1 now comes up in D and not 2nd, hence the better fuel consumption.

Also fitted a hi flow panel filter caus I have a cold air deflector.

Edited by 66yostagea
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https://www.sau.com.au/forums/topic/234655-cat-convertor/#findComment-4115336
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I have had a HKS 2535 on an R33 and I tried 3 different exhaust combinations and let me tell you the 2535 is a great punchy turbo but it really needs to breath!!!

If you can gut the cat and you will never look back, it really does make a massive difference.

It also makes your rear bar turn black from the carbon deposits your exhaust puts out too. But who cares when you've got a Stagea that blows flames? :/

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Well I got a magnaflow cat. got it for $280. Now just gotta go to the exhaust place and get the cat-back made up. Xmetal - the reason I didn't get a X-Force 5 of my friends had their one collapse on them after 6 months.

I'm going to go custom as I don't like cannon exhasuts (personal choice) and can't find a aftermarket dual tip exhaust (or maybe I haven't looked hard enough).

I was thinking to go for a de-cat...but i guess i want to go for a sleeper look

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