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Ok im going to be on my Ps soon and i was thinking about installing an exhaust system in my r33. I done all the handling modifications like coilovers, swaybars etc etc but as im a P plater is it worth the hassle to get extractors due to cops? or just stick with a cat back exhaust?

Edited by mick2nv
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https://www.sau.com.au/forums/topic/290769-extractorsheaders-for-p-platers/
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Its really up to you man...if your doing whole exhaust i would also do extractors as its probally one of the best performace increasing mods on a N/A, but being on red p's you arnt legally allowed ANY mods, so you'll get bummed if your pulled over and checked.

EDIT: DIDN'T NOTICE YOUR IN SYDNEY, DON'T KNOW WHAT LAWS THEY HAVE IN REGARDS TO P PLATERS

^Sydney is just as tight as victoria...

By the time you put a cat-back on, you may aswell do the whole lot, extractors back. More power, more noise.

I've got a full exhaust system on mine, you can feel the difference compared to what it was at before.

For some reason I thought it was also modifications which alter the performance?

I'm pretty sure that's how it is in QLD and VIC, but not in NSW

Here we go

The prohibited vehicle condition restricts provisional (P1 and P2) drivers from driving certain high performance vehicles. The condition applies to provisional licences issued on or after 11 July 2005. The scheme aims to prohibit young driver access to vehicles that are overrepresented in young driver crashes.

Prohibited vehicles are those with:

Eight or more cylinders (except diesel).

A turbocharged engine (except diesel).

A supercharged engine (except diesel).

Engine performance modifications that require an engineers' certificate.

Certain high performance six cylinder engine vehicles or other vehicles as described in the publication Novice Drivers - High Performance Vehicle Restrictions.

Heres the link aswell, just for those who will try to prove me wrong :(

http://www.rta.nsw.gov.au/licensing/gettin...conditions.html

Edited by Super Drager
For some reason I thought it was also modifications which alter the performance?

It used to be.

I think they changed it after people pointed out that any non-factory exhaust would technically "alter the performance". So any P plater with an old car that can't buy an OEM one due to it being discontinued would be up the creek.

it worth the hassle to get extractors due to cops? or just stick with a cat back exhaust?

Extractors are less noticable than a catback.

They don't muffle so replacing them doesn't make the car that much louder. If you find a way to make the OEM heat shields fit, they're practically invisible unless they lift the car up.

If you're worried about getting done by the cops, I'd do extractors instead of the catback. Not the other way around. A giant cannon hanging out the back is noticable, as is the noise as you roll by.

The other option is to find a catback that looks stock. I'm not entirely familiar with the differences, but I would assume that a factory turbo catback would flow better than the factory NA catback. If they could be made to fit, doing extractors and a FI catback (which shouldn't cost you that much) might be the best "stealth" option.

Does an exhaust require an engineering certificate? Technically modifying any part of the exhaust modifies the way it breathes, which affects emissions, so technically it would need to be DECC tested.

im in the process of obtaining coby extractors for mine, bought them off a guy on here. with a 2.5" catback you do loose some responsiveness in the low end, but theres heaps more go in top end power. hopefully the extractors should help even more.

not alot of other mods you can do really to get power, but yeah. get a heatshield made up for it and get them HPC'd and youl be right on.

sorry for the late reply people, iv'e been away, thanks for the replys!

Yes i'm going to go to a custom exhaust place to get it done (which one? im in the fairfeld area). My top priorities for the exhaust is to get rid of that raspy noise at around 3000rpm, give it that sexy rb noise of course and the slight performance gain. But what kind of price would i be looking at for a straight through exhaust system (headers and catback)?

cheers

sorry for the late reply people, iv'e been away, thanks for the replys!

Yes i'm going to go to a custom exhaust place to get it done (which one? im in the fairfeld area). My top priorities for the exhaust is to get rid of that raspy noise at around 3000rpm, give it that sexy rb noise of course and the slight performance gain. But what kind of price would i be looking at for a straight through exhaust system (headers and catback)?

cheers

if you want the same RB noise that im thinking of you wont get it unless you get a turbo. but you can still make an NA sound good with the right system. allow atleast $700 for the full job, atleast. $400 for a catback and a few hundred for headers. i picked up a second hand pair of cobys for $310.

if you want the same RB noise that im thinking of you wont get it unless you get a turbo. but you can still make an NA sound good with the right system. allow atleast $700 for the full job, atleast. $400 for a catback and a few hundred for headers. i picked up a second hand pair of cobys for $310.

cheers man i have about a grand saved up so that should give me a good system then :P

www.dkne.com.au will start you off its a fairly straight forward process . but the exhaust studs are fairly brittle

ok thanks for link but ill probably get them custom made but if i change my mind ill definently look into getting dkne's

2.5" catback + headers = win.

heatwrap the headers and they won't even know

im not an expert but i thought you would need more than just heatwrapping the headers. More like a heat shield made up?? but if thats all you need to do, well thats good :laugh:

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