Exhaust Mod

[Gholdwayne]

Im looking at getting a catback job done for my car at the moment, starting off with the catback from a stock standard system. Now what im wanting to know is that, is it ok for the catback system to be 2.5" in size and still be able to use the existing extractors, collector pipe, & cat ?

And are there size choices too with the extractor and collector pipes or are they just one size ?

Im still thinking at this point if i should get the rpw headers since i saw them cheap at the site, or if i should go with hurricane when theyr $700(i understand theyr the same as rpw, just that i don't know if theyr coated) from liverpool exhaust - where im getting my exhaust done...

[vipfto]

yip 2.5 is perfect and will bolt straight up.

The RPW headers are good as stock ones are so restrictive but you can buy these after and bolt up at any time mate

[Gholdwayne]

ok, so the 2.25,2.5 thing isnt applicable to the collector pipe (its one size) ?

[vipfto]

na factory ones are real small but RPW are around around 2.25 i think?

its more to with the flow of the headers and collector pipe than actual size

[Gholdwayne]

ic, so i dont have to worry about picking the wrong size when it comes to the collector pipe.

so has anyone had their exhausts done at Carline mufflers? Liverpool exhaust is a bit far from St marys and carline is a suburb away but i wanna know if there are some things that are of concern... last time i quoted carline for a catback was $650 which i thought wasnt bad, havnt checked livo yet though. Oh and hopefully they do installations for the varex muffler plus the hard wiring to the battery...

[Bennoz]

Stock is 2.25. Get the cat back in 2.5, the RPW's are 2.5 as well, so will match up perfectly.

[Rambo]

hey gholdwayne.
i just got a quote from Performance exhausts last week for 2.5 mandrel piping, with 2.5 high flow cat and muffler(redback) and twin tips for $1100 at Performance Exhaust in Penrith (Nepean Square)

I talked to the fabricator Mark there for a fair bit all his work comes with 2 years workmanship warranty,

Im gonna get some more quotes but seems like $1100 aint oto bad?? right?

[Rambo]

oh and he said $1100 max just depends on how many bends he needs, so could be low as $950.

[vipfto]

that seems little steep but you are buying muffler too....

I guess thats for stainless system? which you prob dont need as will way outlast car go for mild steel and should be cheaper.

Mine cost $350 for hiflow cat, resonator and 2.5 inch piping mandrel in mild steel with de-cat pipe but I used existing muffler however I do a lot of work for them, would usually be around 6-700 ish I would imagine. That does not include extractors or why pipe either which just directly bolt up

[Gholdwayne]

that seems little steep but you are buying muffler too....

yeah its a bit steep, i remember $650 from carline for a catback, and high flow cats arent too expensive, and ill have to check with these workshops if they install varex mufflers as thats what im putting in.

[bushido]

GO to performance exhaust centre at northmead. good prices and you can choose exactly what you want for your system. haken is very good

[Gholdwayne]

GO to performance exhaust centre at northmead. good prices and you can choose exactly what you want for your system. haken is very good

that sounded really engaging

[Astron_Boy]

Don't go to carline! period.

If you wanted to spend money and get full on quality with Stainless, then I know a guy, but if you are on budget, I wouldn't recomend.

However, don't go to Carline.

Infact!

Just... don't go to Carline!

[Gholdwayne]

crap workmanship ? they werent on the top of my list anyway, its livo exhaust, maybe performance exhaust centre...

[bushido]

I still recommend Haken though. Very good craftsmanship.

[Bennoz]

My cat back was mandrel bent, stainless with Herrod muffler, resonator & metal cat was $1400... to give you some grounds for price comparison.

I tend to agree with vip thou, a mild steel one will probably outlast the car as is anyway.

[Gholdwayne]

actually im also thinking about getting the hurricanes first + metal high flow cat... - so im going to livo first as they source the hurricanes.

[koolio1234]

I reckon do the exhaust from the catback in 2.5" mild steel as been suggested. Leave the headers till later as they wouldnt be too hard to pop in later assuming you went with the 2.5" piping.

[Gholdwayne]

^^ yeah im really contemplating on that but it feels more of a wank factor since i know that the extractor half of the zost is the performance path.

Even so, i want to get the catback with the throaty sound that i want but then installing the high flow cat and extractors might change the tone when i do that after the catback job, - it might change some frequencies in which the resonator was designed to noise cancel for, in turn changing the overall tone.

Or does it not affect the sound at all ? im really counting on advice right now, i really want the catback tbh. tone is just as important as performance to me - i want to enjoy exhaust tone while driving, its just so enjoyable to me that way since im less inclined to spirited driving(petrol budgets)..

[vipfto]

From cat back will give you the noise and it will give you more KW too

IMO add the extractors later they will also give KW and will only change noise slightly as you would of already had cat back done