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Old 02-15-2005, 19:36   #1 (permalink)
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Exhaust quotes (EFV8)

Hey all,

I've done a lot of reading over this forum and I think I want a twin 2.25" all the way through, but if the price is too much I'll just have to go single 2.5/3". It's an auto, with GT40P heads and herrod supplied 4-1 extractors (have been told by one shop they are De Filipo). Currently this means I make all my (little) power 2500-4800rpm or so.

1) Will going a twin 2.25" be too restrictive for this power range? I'd like to get back some of the torque for the auto so is this option going to be best of both worlds or worst? :p (best being torque low & power high, worst being no torque with restricted power)

On to the quotes though, for a cat back , I've been quoted, including fitting etc:

True Flow Exhausts: (mild steel, redback components etc)
- single 2.5 $330
- dual 2.25 $700

Sun-Ex Exhausts:
- single 2.5 mild steel $425
- single 2.5 stainless $895
- dual 2.25 stainless, custom 16" straight through mufflers (his personal specs) that end up 2" out the back, its his personal "best" system apart from going Remus $1950

2) What do you guys think of these prices?

Now, I think 1950$ for a cat-back exhaust is a bit of a rip, i mean, it can't be worth twice as much can it :p And i'm not spending 1/5th the value of the car. What I am fairly sure of is that the quality from them will be higher than True Flow, and that the guy at SunEx seems to know quite well what he's talking about (you can see he loves the work :)). He's also said that if you get the dual they will do all the extra work in customising the sound to my tastes for nothing (which i would expect!). Stainless comes with a 10-year warranty.

3) Can anyone comment on either of these exhaust shops?

4) Can anyone else recommend a place to do a dual 2.25 in the melbourne area (prefer north-west but i'm willing to travel if i save a grand on it :p) so I can get some more quotes to compare on?

5) What do people think of De Filipo 4-1 extractors? Would it be wise to change them over and fit Hurricanes etc or would the gains be too minimal to notice?

6) Anything else you feel like adding!
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Old 02-17-2005, 21:30   #2 (permalink)
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Re: Exhaust quotes (EFV8)

Ok , here are some comparisons in the pricing of Exh tubing to work out why stainless systems are soo much more


Std 3m length of 2 1/4 ACMS exhaust tubingl = $60 Retail
Length of 3m 409 grade stainless 2 1/4 Exhaust tubing =$108 Retail
Length of 3m 304 grade stainless 2 1/4 Exhaust tubing =$270 Retail

If you are planning to keep the car for 10 - 15 years the stainless may pay for itself over time, but cars run alot hotter than they used to so they dont rust out as much

2 1/4 dual system would be perfect for your engine but for a cat back system anything more than 1K is too much,

What sort of note are u after i may be able to reccomend some mufflers - I would go for a 10 x 4 about 14 - 16 in long either a o/c or o/o with FGP with a baffle or just straight through depending on ur tastes
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Old 02-27-2005, 07:45   #3 (permalink)
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Re: Exhaust quotes (EFV8)

Im running a single 2.5" cat back, with no extractors.

Ive just got a single berkley hot dog, no mufflers, and its not too loud. Sounds good, loud enough to be heard without attracting police attention. Doesnt drone at freeway speeds or anythin aswell. And doesnt annoy me after a bit of drivin like some of my mates zorsts.

Sometin lik ethat should cost $250 upwards in mild steel.
But if you are runnin extractors or hollow mufflers, you may want to stick to a straight through muffler
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Old 03-10-2005, 07:34   #4 (permalink)
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Re: Exhaust quotes (EFV8)

I got the following for $1150 from a local non-franchise shop:

Pacemaker PH4000 extractors
Flanged cats (not high-flow, wanted to keep my torque)
1 ft lengths of twin 2.5" pipes (were meant to go to diff, but they would've been under the driveshaft, so I opted for mostly single pipe after that ) joining into single mandrel-bent mild steel 3" pipe.
Single deep-offset muffler (about 1/3 along the 3" pipe).

The extractors were $500.

For a cat-back dual exhaust, I'd be looking at mandrel-bent dual 2.25" mild steel setup with a single muffler (offset, deep-offset, hot-dog, whatever) at around $600-$700 (including muffler). I was wondering whether I should have gone for twin 2.25" pipes, but I can't get the grin off my face from the nasty war-cry that my little windsor now bellows... And the muffler hasn't burnt in yet! (got it done a couple of days ago)

Good luck with your decision mate

-Dave-
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