High flow cats and extractors

[gamevx]

I am thinking of gettin some extractors fitted to my V6. i'm gettin a set of pacemakers. Now what i wont to know is it worth putting new high flow cats in? its going to cost me just as much for the cats as the extractors, and some ppl tell me it not worth puttin new ones on a 6 cos the stock ones are ok.

whats everyones opinion on cats?

[Not_An_Abba_Fan]

Hi flow cats are not necessary on a stock engine. The standard cats flow enough. If you turbo or supercharge it then it would be ok but leave your standard ones there.

[daron]

i have to race cats and makes a diference but then im charged but yes if n/a i wouldnt bother with twin but would still go high flow single

[dufus]

The local Carline Mufflers guy told me that if I get extractors, is should get a high flow cat otherwise i shouldnt bother with the extractors.

[VY03]

Problem is that the V6's need some backpressure and though the stock ones are a bit restrictive its not worth going hi flow cats unless you plan to go turbo or supercharged later on then

[Not_An_Abba_Fan]

The local Carline Mufflers guy told me that if I get extractors, is should get a high flow cat otherwise i shouldnt bother with the extractors.

The only reason you were told that is because they wanted to sell you a hi flow cat. The extractors will give you the benefit, a hi flow cat will take it away.

[VY03]

About maybe 3-5kw gain hardly bang for buck

[Not_An_Abba_Fan]

And then only noticeable on a dyno. Street feel would actually be worse.

[Jesterarts]

Yeah, what Not_An_Abba_Fan said...
I got headers, stock cat and then a 2.5 Catback behind that...
Cause really got a kick in the arse will all that...
Sure the cats might give u an extra 3kw but u will not feel that on the road.
UNless ur gonna charge, then cats are an idea

[gamevx]

hmm... well while i'm on the topic, what type of extractors has every one got?

[VTPREDATOR]

seriously tho, wats the standard cats diff to high flow cats, to a stock ecotec??? i cant see how itd change performance, its just a cat....

p.s. dont throw abuse, just askin a simple question. i still run standard cats, as they were still in good nik when i got my zorst.

[VTPREDATOR]

hmm... well while i'm on the topic, what type of extractors has every one got?

pacemakers seem to be the way to go, but a lot of the guys run hm headers.

[Not_An_Abba_Fan]

seriously tho, wats the standard cats diff to high flow cats, to a stock ecotec??? i cant see how itd change performance, its just a cat....

p.s. dont throw abuse, just askin a simple question. i still run standard cats, as they were still in good nik when i got my zorst.

Absolutely no difference on an ecotec. If it was a super 6 then it would make a slight difference.
A hiflow cat has a different ceramic substrate, the holes in it a slightly larger and the inlet and outlets flow smoother. There are also steel internal cats which all flow better than a ceramic hiflow.
Big hp engines should run hiflows, stock ones don't need them.

[Jesterarts]

I got H&M headers... happy as with them

[Not_An_Abba_Fan]

I got a set of Genies sitting in the shed, just haven't gotten around to fitting them yet. Would have preferred Pacemaker but at the price (Carton of Woodstock) I got them, I'm not complaining.

[karlos_1984]

ive been tossing up the idea of exhaust and headers recently too. I had pacemakers with stock cat and 2.5" redback system with front muffler box only on my VL, and it sounded awesome. I was gona spend th e$ and get the HM headers aswell, but for those of you that have gone the headers with exhaust also, did u really notice any difference in power or anything, i know the note is important, but a mate of mine used to have a car exactly the same as mine engine wise, and he put on his catback exhaust first, but when he got headers later he sed he got no difference in power or noise, what's the story? Cos if i can get no difference in power or note by having headers as well, i dont see the point in spending the money.

[kimmys~vs~calais~sII]

Im looking to get headders for my vs also..is their alot of difference between the pacemakers and h&m's?
How much do they differ pricewise??

[Jesterarts]

Exhuast n headers give you a powerband from about 2500 up and some improvement takin off...
I was happy when i got my HM headers goin through a stock cat n then into a 2.5 redback catback with only the middle muffler

[Not_An_Abba_Fan]

HM's are a bit dearer because they are stainless steel. Bit of a difference in power on a dyno, but unless you plane to drag it, there are no real differences between brands. Quality of build is a factor though. Which ever brand you get, make sure they have at least 2 years warranty, most have 3 now with stainless being between 5 and 10.

[Jesterarts]

Speakin of warranty... i should probably find the receipt for my headers...lol

[Not_An_Abba_Fan]

I don't have a receipt, but I know where the guy lives that I bought them off.

[gamevx]

well Thursday my cars goin in for my new headers, got pacemaker in tuned length. So i cant wait!

[dufus]

Thanks guys, I was going to get a high flow cat before reading this, so you have saved me $250 bucks, which can go toward somthing else

[VT_Boi]

I run standard headers, standard cat and then my 2.5 system with lukey muffler. My mate has a VT with Pacies on it, my car actually pulls better than his, so why waste my money on extractors when I can put that into suspension and brakes and play in the twisties.

[Jesterarts]

Your mates car is screwed then...lol