460BHP ?

4.2 V8 32v Naturally Aspirated - 414 bhp
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johninspain
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460BHP ?

Post by johninspain » Sun Feb 21, 2010 11:31 pm

http://www.pistonheads.co.uk/sales/1503972.htm

Am i being a cynic asking why its well know in Woking, serviced at preston but from mersyside ? And 460bhp ?
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cz.Garry
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Re: 460BHP ?

Post by cz.Garry » Sun Feb 21, 2010 11:34 pm

johninspain wrote:http://www.pistonheads.co.uk/sales/1503972.htm
And 460bhp ?
NA engine +40 BHP by exhaust and remap? IMHO impossible.
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ArthurPE
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RE: Re: 460BHP ?

Post by ArthurPE » Sun Feb 21, 2010 11:38 pm

that would require the following:
increase in vol eff of 11%, on an already efficient engine...if it were 0.90, it would jump to 1.0!!!
increase of compression ratio to 13.9...not happening
increase displacement by ~1/2 liter
extend rev range 11% to >8600 rpm...

not in my opinion
Two things are infinite: the universe and human stupidity; and I'm not sure about the the universe...Albert Einstein
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johninspain
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Re: RE: Re: 460BHP ?

Post by johninspain » Sun Feb 21, 2010 11:57 pm

ArthurPE wrote:that would require the following:
increase in vol eff of 11%, on an already efficient engine...if it were 0.90, it would jump to 1.0!!!
increase of compression ratio to 13.9...not happening
increase displacement by ~1/2 liter
extend rev range 11% to >8600 rpm...

not in my opinion
loke i said Arther, you know TOO much !!!
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youry
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Post by youry » Mon Feb 22, 2010 2:36 am

sorry guys to tell you that adding +40HP to an rs4 V8 is tottaly real. done on mine with lots of dyno testing.

but its a complet chaneg fo exhaust with sport cats (+15hp)

and engine remap (+25hp)

tne OEM remap is done taking accoutn that it still has to work with carppy gas (95 octane level) so if you only use 98 octane you can be more agressive on ignition timing which not going to far of course (no engine knocking)....

now what is false is to say that you reach 460hpo as OEM engine extracts typically in the 370-380hpo region so you actullay get back to the 420 hp once you did the mods...
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S2tuner
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Post by S2tuner » Mon Feb 22, 2010 10:44 am

Youry, how long ago was the first time you remapped a car yourself?
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Porky
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Post by Porky » Mon Feb 22, 2010 3:30 pm

I live near Woking, work near Woking, my parents live in Woking, I grew up in Woking....

Never seen this car in Woking... :roll:
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hogster
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Post by hogster » Mon Feb 22, 2010 7:57 pm

Porky wrote:I live near Woking, work near Woking, my parents live in Woking, I grew up in Woking....

Never seen this car in Woking... :roll:
What he said!
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PetrolDave
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Post by PetrolDave » Mon Feb 22, 2010 8:06 pm

youry wrote:OEM engine extracts typically in the 370-380hpo region
...according to some dynos, but not according to real world acceleration runs.
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youry
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Post by youry » Tue Feb 23, 2010 2:57 am

S2tuner wrote:Youry, how long ago was the first time you remapped a car yourself?
I never said I did it myself did I ? But work with the right people to have it done for my cars and customers. don't see any issues with that.
AUDI RS5 B9 (2017-2019)
AUDI A6 AVANT 4G (2012-2016
AUDI RS5 B8 (2010-2012)
AUDI A4 AVANT B8 2.0 TD I 120hp, upgraded to 184ch/442Nm used as daily car (09-12)
AUDI A4 RS4 V8 upgraded to with +35hp/+30Nm) (06-08)
PORSCHE 996 TT upgraded to 500hp/700Nm (05-06)
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