extractors and cat

just wondering what pacemaker extractors and a highflow cat would do for for me?? and what price range i should be looking at??

[AdzT3-146]

you'd probably get a 15-20 kw gain, would cost a bit over $1k to be fitted.

[EFFalcon]

extractors = $350-$450 + fitting ($100)
then the price of the cat itself, fitting of the cat may be included in the price of the extractor install since modding the cat is 3/4 of the work.

power gains depend on lots things :/

[AUII_Forte]

Cost me $720 for PH4499's and a 2.5in high flow cat. They aren't cheap!

well thats good to hear. looks like im gettin it real damn cheap.

[Qwikcorty]

Originally Posted by AUII_Forte

Cost me $720 for PH4499's and a 2.5in high flow cat. They aren't cheap!

where did u buy them from?? that seems awfully expensive!

[Grechie]

i got my 4499''s for $450, my high flow 2.5 cat for $370, & Redback 2.5 inch no resonator cat back for $260 .. total of 1080 just for my exhuast system !..but it was only put on a CFI, gave it bout 130KW (stock 120KW) was not much boost, now its going on a 4.0L MPFI EBII engine ! (stock 147KW) hoping for bout 155-160? i hope i see a difference with my extractors/cat mainaly as i couldnt see much on a CFI!!.!!!

[SileNceR]

you'll see a huge difference going from cfi to mpfi, even in stock form... cfi won't gain from extractors as they can't breath anyway its like strangling urself while u breathe in and then stopping to breathe out... doesn't make it easier to stay alive...

mpfi on the other hand will benefit a fair bit from extractors and exhaust... and sound awesome too... try running the mpfi setup without a lid on the airbox; just to see the sound lol

im gettin the full setup for $500 installed. y u all payin so much??

[mcflux]

15-20kw sounds a little optimistic (for a stock/near stock motor). Then again, maybe a high-flow cat will add a few more kw (at a more undrivable rpm, taking a bite out of torque in the process)

Don't bother with a high-flow cat (or should I say "overly high flow" cat), only makes your peak dyno figure look a little better. By all means, replace your current cat though! I replaced my cats with regular ones

-Dave-

[Kenaz]

Originally Posted by Ghia5L

15-20kw sounds a little optimistic (for a stock/near stock motor). Then again, maybe a high-flow cat will add a few more kw (at a more undrivable rpm, taking a bite out of torque in the process)

Don't bother with a high-flow cat (or should I say "overly high flow" cat), only makes your peak dyno figure look a little better. By all means, replace your current cat though! I replaced my cats with regular ones

-Dave-

Hi Dave, how much did you pay for your PH4000s? I'm getting some for mine very soon.

so u sayin that a high flow cat isnt worth it?? wat would you suggest?? extractors and what??

[mcflux]

Well for everyday driving, a normal cat would be just fine ;) (note, everyday driving is for <4000rpm use) <-- ballpark figure

Gudday Kenaz ;) My PH4000s cost $500 I think, however they may have been cheaper since I was quoted the following for my exhaust:

$500(?) for PH4000s
$250 for both cats (not high flow)
$300 for 2.5" into 3" piping (mandrel-bent, made at workshop)
$200(?) for muffler. It was a semi-expensive muffler too :P

Somehow this came to a total of $1150 fitted :

The mechanic had difficulty putting the extractors on (due to steering column) so it took almost half a day extra (the whole day, 8 to 6) but didn't charge any extra. Was a good thing, because I was silly and didn't get a WRITTEN quote lol! I got lucky (dumb luck?)

Generally they're around $600 I think. Fit 'em soon mate, they sound horny as!

-Dave-

[Kenaz]

Originally Posted by Ghia5L

Fit 'em soon mate, they sound horny as!

Yeah, I've been itching to get them since I heard your car at the Bundoora "aftermeet" cruise ;) At the moment I've just got a cat-back.

ok so it looks like ill just stick with the extractors then. just get a new normmal cat.

[mcflux]

Ahh yes, that was fun Shame I missed the rest of the cruise :(

Shop around for those extractors, because their prices vary quite a bit. For extractors alone, the place I went to didn't sell them at the cheapest price, there was some joint in southeast Melbourne I found on Ebay that sold the cheapest ones ($380 new I think! They were on special for 25% off or something like that). I went to the place I went to though because of the deal for the whole package, and the mechanic was a very genuine guy.

Wanna race at Heathcote? Check the grudge match thread ;)

MockGT, do whatever you want to do. Depends on what your driving style is I guess mate ;) Tell us how u go though & what u decide to do. Good luck!

-Dave-

hmmm yes well im not so sure now. had made up my mind but not so sure anymore. will see how we go.

[EFFalcon]

if ur getting it for $500
just do it.
thats very cheap

[AUII_Forte]

Sorry, I paid $700. $480 for the extractors (inc installation) and $220 for the cat. I know it's not cheap, but I don't think I got ripped off, it's about the going rate I thought.

[needturbo6]

only thing you need to do to the cat is get the ends chopped off and 2.5" pipe welded on and its all you need. better than cheapo hi-flows and nearly as good as a quality hi-flows.

if i get a highflow cat will i loose anything in da way of power or tourque??
also will i gain anything by doing it?

[needturbo6]

Originally Posted by mockgt

if i get a highflow cat will i loose anything in da way of power or tourque??
also will i gain anything by doing it?

no you will not lose power(unless its a cheapo ebay hi-flow...). Just modify a good condition ford cat, to 2.5" inlet and outlets and youll be right.

[Grechie]

Originally Posted by SileNceR

you'll see a huge difference going from cfi to mpfi, even in stock form... cfi won't gain from extractors as they can't breath anyway its like strangling urself while u breathe in and then stopping to breathe out... doesn't make it easier to stay alive...

mpfi on the other hand will benefit a fair bit from extractors and exhaust... and sound awesome too... try running the mpfi setup without a lid on the airbox; just to see the sound lol

yeah lol i never really felt/sore a power increase from extractors on my CFI but i sore a difference in top speed 140+ with exhaust....but i hope now with my full zorst system, and my K&N pod filter on the new 4.0LMPFI that it goes nice...i do on the other hand need a quciker diff. (currently ****y 2.77)



-Grechie

ok i forgot t mention i have mpfi so if i get the system im looking at i will i be dissapointed?

[mcflux]

nah mate, in fact it you should notice more of an improvement

High-flow cats (depending on inner diameter) give better KW (but higher up in the rev range, due to their higher flow capacity), and take out a bit of low-end torque (due to lower velocity at low revs than normal cats). Hence why I'm recommending not going that route unless you plan to drive at WOT and >4000rpm most of the time.

-Dave-

[ClassicAU]

this looks like a pretty interesting thread. sorry about cutting in on it, but it actually reminded me of a couple of questions. first off, i was also thinking of getting a 2 1/2 cat back. i currently have a set of "HiTech Headders" extractors on there at the moment. they look smaller than most others i have seen, so my guess is they are 2 1/4 to go with my 2 1/4 exhaust system. i have a standard cat on there, and from what i gather, all that needs to be done is put a 2 1/2 outlet on the end to put the cat back. do they do anything at all or just make noise? speaking of which, i have been told that cos i have a wagon, the pipes are longer and therefore i wil not suffer from as much drone. how true is this?

ok have decided to leave the exhaust system for now. am getting car lowered on saturday morning instead. bout damn time if ya ask me.

[EFFalcon]

ooooooooooh yeah
ur car will look mad when its lowered

hell yes. will be done for cruise on sunday. is $450 a good price??

[Damo]

$450 sound reasonable. Do you know what they are doing, what springs etc. spring = approx 200-250 + 100-150 labour, and maybe a set of shocks.