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  #21  
Old 04-30-2012, 10:07 AM
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Which track is that Barry?
A.
Alfredo,

That's Daytona International Speedway.

Barry
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  #22  
Old 04-30-2012, 10:22 AM
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I have a 575. I run the x-pipe and standard tubi's. I was thinking about changing the headers. Does anyone make a racing header for the 575?
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  #23  
Old 04-30-2012, 05:09 PM
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I have a 575. I run the x-pipe and standard tubi's. I was thinking about changing the headers. Does anyone make a racing header for the 575?
Yes sir!

These long tube headers need to be mounted with the 100 CPSI HJS catalytic converters from SuperSprint. The system is oversized at 2x60mm. We have 1 set in stock and are willing to pass along discounts on the catted system to get these objectively reviewed.

The full catted system was dyno tested on the SuperAmerica (540hp Euro) and showed gains from the standard 495whp to 541whp with no tune. By the dyno sheet, you can clearly see the bottleneck of the stock system is in the high RPM range - this is mainly due to the headers as they do not promote enough exhaust velocity for ultimate gains.
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  #24  
Old 04-30-2012, 06:52 PM
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Originally Posted by gatorgreg View Post
I have a 575. I run the x-pipe and standard tubi's. I was thinking about changing the headers. Does anyone make a racing header for the 575?
The headers would be the ultimate final stage improvement to a 3inch exhaust. They will not however do all they can if they have to push the exhaust through undersized pipes. The gain will be largely only from losing the restriction of the primary cats. To get the full scavenging effect of headers you need to free up your exhaust. You should enlarge the pipes first. No hot rodder puts headers on a car with a factory exhaust. I know your x-pipes are not stock however they no doubt are still only 2 1/4 inch. 3inch pipes have 78% more flow area than 2 1/4inch. However those lovely headers combined with 3inch pipes would result in well over 600bhp on a 575 and make it as quick as a 599, except of course a 599 with 3inch pipes.
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  #25  
Old 04-30-2012, 07:53 PM
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Would those headers fit a 456 GT?
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  #26  
Old 04-30-2012, 08:12 PM
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Would those headers fit a 456 GT?
Unfortunately SuperSprint never got a 456 in for exhaust development! We have 550/575/599/612 headers for the V12s.
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  #27  
Old 05-01-2012, 06:14 AM
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Then you do have one also for the 456, as the engine is the same as the 550 / 575 as is the basic architecture of the car.
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  #28  
Old 08-08-2012, 11:45 PM
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Did you ever put together a video of how it sounds?
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  #29  
Old 08-26-2012, 12:04 PM
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F12 has a great big exhaust system

In the July 2012 issue 600 CAR magazine from the UK there is a fabulous underside photo of the F12 without the underbody. Check out what seems to be a 3inch minimum sized exhaust system from the cats back. I would bet that the biggest portion of the extra 225bhp over a 575M has come from the free flowing exhaust. Most of the rest has come from a half litre more displacement and more than a 1000rpm extra. The smallest contributor will have been from new engine and engine management technology. I am of the opinion that Ferrari purposely choked back the output of the 575M to allow easy bhp improvements in the succeeding 599 and F12 models. They did this by squashing the too small exhaust in places or they were just idiots, which I somehow doubt was the case.

As an aside, what happened in the F12 to the flow through buttresses which supposedly conferred an aerodynamic advantage in the 599? Those holes in the bonnet 'feeding' the Nike swoops will also fail to appear on the F12's successor. Surely if these are credible aero tweeks they would cumulate on each succeeding model? Just design features with a technical reason thought up afterwards to give credibility? Just my opinion.
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  #30  
Old 08-30-2012, 11:05 AM
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[QUOTE=Trabots;141695637]

I would bet that the biggest portion of the extra 225bhp over a 575M has come from the free flowing exhaust. Most of the rest has come from a half litre more displacement and more than a 1000rpm extra. The smallest contributor will have been from new engine and engine management technology. I am of the opinion that Ferrari purposely choked back the output of the 575M to allow easy bhp improvements in the succeeding 599 and F12 models. They did this by squashing the too small exhaust in places or they were just idiots, which I somehow doubt was the case.

QUOTE]

Interesting thinking here.

If one could spend $8,000 on the exhaust of a 575, and
have 599 level horsepower, it would be a LOT less expensive
than getting the 599 itself.

I wonder if Ferrari would "deliberately" de-tune the 575, in favor
of the later 599, and the subsequent F12 ?

$8000 / 80 HP = $100 / HP. Not a bad deal.

I would have to see a dyno sheet of before / after
to be fully convinced though.

Scott
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  #31  
Old 08-31-2012, 09:20 AM
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QUOTE]

Interesting thinking here.

If one could spend $8,000 on the exhaust of a 575, and
have 599 level horsepower, it would be a LOT less expensive
than getting the 599 itself.

I wonder if Ferrari would "deliberately" de-tune the 575, in favor
of the later 599, and the subsequent F12 ?

$8000 / 80 HP = $100 / HP. Not a bad deal.

I would have to see a dyno sheet of before / after
to be fully convinced though.

Scott[/QUOTE]

Scott, you get it mate. The 575 is the best Ferrari deal going, awesome classic front engined V12 and now easily upgraded to 599 performance. My hand held 60-100mph times (3.7sec best) have equalled or bettered the 599 times (3.9sec) quoted in EVO and creamed the stock 575 (5.4sec) also from EVO. I have purchased a Racelogic GPS performance computer like the car magazines use for their data, and should have some accurate times when I return home in September. This will be the "dyno" and is just as valid. Take off the weight saved from the 575's exhaust and it still weighs more than a 599. Logic says if the on road performance matches then the horsepower must be at least equal. That is over 100bhp and still without a re-map. That is the best hp improvement I have ever seen with just an exhaust, however if you look at what was there previously it does makes some sense.
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  #32  
Old 09-02-2012, 04:35 PM
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Quote:
Originally Posted by Matt@CampioniShop View Post
By the dyno sheet, you can clearly see the bottleneck of the stock system is in the high RPM range - this is mainly due to the headers as they do not promote enough exhaust velocity for ultimate gains.
These headers are a piece of art!

I have a question though: the dyno shows engine power (Motorleistung) at 534.6 hp, wheel power (radleistung) at 411.5 hp and power loss (scheppleistung) at 123.1 hp or a high 23%.

Is it normal on a 575M?

I thought a commonly accepted figure was around 15% for a manual transmission and 20% for one with a torque converter?
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