Ferrari F40 on the dyno

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DaTT

Garage Moderator
Moderator
Feb 13, 2003
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Vic

Elite Member
Jun 12, 2001
50,422
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Originally posted by: MIKEMIKE
Originally posted by: The Godfather
Why is there flame comming out of the exaust at the end? Is that normal?

its backfiring, it was getting so much fuel so fast thatwhen they let off the pedal, and the engine RPM's dropped, the car got to much gas, and the gas exploded on the exhaust stroke somehow.

i think thats right, atleast i know it is backfiring.

Actually, it's called afterfire. When they let off the throttle (after WOT and redline), the air intake valve closed almost shut, causing maximum vaccum pressure in the intake manifold, and (for a brief second before the injectors shut down) a massively rich AF ratio. Unburnt gas traveled through the combustion chambers and ignited inside the exhaust. Pop-pop-pop. It is normal in any car, you just can't hear it through cats and quiet mufflers.

Backfire is actually when fuel ignites inside the intake. Very very bad.

The whine is the dyno rollers spinning WAY too fast...
 

SupaDupaCheez

Platinum Member
Nov 21, 2000
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Is it just me, or does it look like only ONE wheel is spinning? The driver's side rear wheel appears to be at a standstill. Is it just due to the crappy video?
 

CVSiN

Diamond Member
Jul 19, 2004
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Originally posted by: Bigsm00th
it seems pretty stupid to do that to any car, let alone a really nice one.

dude its a dyno run.. commonly used to tune high performance cars and bikes..
this way you get a accurate computer view of the Fuel/Air Curve so you can make adjustments to the mapping to get the most outa your car..
they did NOT rev this car past redline.. they took it to 5-6 gear to get a top end run to check Horsepower/Torque outputs..

this is 100% not damaging to the car/bike.

 

Apex

Diamond Member
Oct 11, 1999
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www.gotapex.com
Originally posted by: ironcrotch
Originally posted by: The Godfather
Why is there flame comming out of the exaust at the end? Is that normal?

Yea, it's called badasserey

LOL. :) I need to steal that term sometime.

The flame was caused by unburnt fuel. When it hits the hot exhaust tips, it ignites. It's normal on this car.

I kinda doubt the reved it much past redline.
 

sindows

Golden Member
Dec 11, 2005
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Whats with mega expensive cars and their awesome noises they put out? Why can't normal cars sound like this? :(
 

Vic

Elite Member
Jun 12, 2001
50,422
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Originally posted by: sindows
Whats with mega expensive cars and their awesome noises they put out? Why can't normal cars sound like this? :(
Twin-turbocharged, dual-intercooled, 2.9L DOHC 32V flat-plane crank V8 producing 478 bhp at 7000 rpm.

That's why :p
 

OutHouse

Lifer
Jun 5, 2000
36,410
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whats so exciting about that? just a fast car spinning its wheels on rollers and the enging making a bunch of noise.
 

SophalotJack

Banned
Jan 6, 2006
1,252
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After watching that video I realized I will save a lot of money on viagra if I just put that video on my vision:m.


"Hold on baby, I need to watch a video before we get down to business."

Lol.
 

MrDudeMan

Lifer
Jan 15, 2001
15,069
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Originally posted by: bR
Originally posted by: Bigsm00th
it seems pretty stupid to do that to any car, let alone a really nice one.

lol

shove that lol up your a$$. im not talking about the process of getting your car dynoed, im talking about revving past redline if they did infact do that. idiot :roll:
 

RiDE

Platinum Member
Jul 8, 2004
2,139
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Originally posted by: Bigsm00th
Originally posted by: bR
Originally posted by: Bigsm00th
it seems pretty stupid to do that to any car, let alone a really nice one.

lol

shove that lol up your a$$. im not talking about the process of getting your car dynoed, im talking about revving past redline if they did infact do that. idiot :roll:

Out of all the responses to your post, you pick on the one with only 3 letters in it. Not only that but those 3 letters ticked you off so much it you start calling people names and hurling insults.

What made you assume you knew what the "lol" was for?