Ferrari Mailing List: Re: 458 with aftermarket exhaust

[Peter Pless (ferrarilist]

Here we go. The old dyno debate. Forget the numbers. Forget the drivetain losses. Every dyno reads differently

 

All that matters is that on the same dyno that 458 showed a significant jump in the power NUMBER. (which still surprises me)

 

From: Mike Fleischer [mailto:themightytoe [at] gmail.com]
Sent: Tuesday, 23 November 2010 6:19 AM
To: Peter Pless
Cc: The FerrariList
Subject: Re: [Ferrari] 458 with aftermarket exhaust

 

yeah I am still not buying it at all...

My 1st vette put down 360 at the wheels (rated 385), my 348 put down 255 (rated 300), second vette put down 358 (rated 400)...  Granted the Chevy's at least were woefully under-rated from the factory but still... 

So your telling me that Ferrari's brand new latest greatest video game, isn't as efficient as the "bane of Ferrari" the 348?  Man I gotta go back to that Ghetto and bring it home...

On 11/22/2010 8:49 AM, Thomas Reynolds wrote:

Well, here's where my math "skills" are called into play.  562-450=112 hp loss.  That's 19.9% loss from a claimed 562.  I've always heard that a driveline loss to RWP of anywhere from 15 to maybe 25% is always possible.  25% of 562 would be a loss of 140.5 hp.

 

Tom Reynolds

Tulsa, OK

--- On Mon, 11/22/10, Mike Fleischer <themightytoe [at] gmail.com> wrote:

From: Mike Fleischer <themightytoe [at] gmail.com>
Subject: Re: [Ferrari] 458 with aftermarket exhaust
To: "Tom Reynolds" <kjtar [at] att.net>
Cc: "The FerrariList" <ferrari [at] ferrarilist.com>
Date: Monday, November 22, 2010, 1:55 AM

Ah yeah I call bullshit on that.

450 hp out a motor that claims 562 at the crank?  Thats a 25% driveline loss...  I don't think so.  At most its probably 18%, but more likely around 15%...  So it should see 480-490 at the wheels, and likely is under-rated from the factory a bit anyhow (at least most American muscle engines are).

On 11/21/2010 6:36 PM, LS wrote:

Indeed, I was fully expecting to see no mention of dyno gains or something on the order of 10-15rwhp gains.

A guy I know and some mods done to a 355 and the cost was about $12k for full header, cats, mufflers, etc.

The dyno shop was "out of order" that day conveniently.

LS

 

---

From: Peter Pless <ferrarilist [at] pless.com.au>
To: LS <lashdeep [at] yahoo.com>
Cc: The FerrariList <ferrari [at] ferrarilist.com>
Sent: Sun, November 21, 2010 7:29:35 PM
Subject: Re: [Ferrari] 458 with aftermarket exhaust

Anyone else surprised at the power gains? Ferrari doesnât normally leave that much on the table.

 

From: LS [mailto:lashdeep [at] yahoo.com]
Sent: Monday, 22 November 2010 11:28 AM
To: Peter Pless
Cc: The FerrariList
Subject: Re: [Ferrari] 458 with aftermarket exhaust

 

Great sound and apparently awesome power gains...I wonder how much?

$15k?

LS

 

 

---

From: Fellippe Galletta <fellippe.galletta [at] gmail.com>
To: LS <lashdeep [at] yahoo.com>
Cc: The FerrariList <ferrari [at] ferrarilist.com>
Sent: Sun, November 21, 2010 12:37:44 PM
Subject: [Ferrari] 458 with aftermarket exhaust

http://www.youtube.com/watch?v=mtp2TGhKY0s

 

 

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