http://jacksonville.craigslist.org/cto/838439597.html

400 hp out of a 99 w/ flowmaster and cold air intake

 

love how the battery is sitting on the ground beside it lol

 

The price sounds pretty decent though!!

 

Man, nice price though!

 

yea thats a good price

 

Its probally not that far off @ the crank.I had LT headers,stock cat back,K&N,Hypertech Proggramer & made 333rwhp w/ a4 thats about 420hp @ the crank.You have too remember they are underated from the factory.My car stock made 302 rwhp/ 360hp @ the crank.

 

Crank HP.

 

99 LS M6 with those mods, what?....320RWHP? that equals 376FWHP assuming a 15% DT loss.

Nice car.....I'd love to see it parked next to an AB mach in my garage.

 

Dude, are you figuring a 25% powertrain loss?? 333 at the wheels at best might be 400 at the crank... thats a 20 % loss. real life is closer to 15 though.

 

Looks like a pretty clean car...

 

The guy who dynoed my car on a dynojet dyno gave me there formula (dynojet) but i say he's a little high and what your saying is more like it.

 

wish that was for sale when I was looking, I don't care what HP he's claiming

 

nice price, but those stripes are gross

 

Who are you guys refering to? me?

Nevermind....I caught it.


BTW here is the formula: RWpower/.85=FWHP. (assuming a 15% DT loss.)

 

I was told it was RW power/.80=crank HP from Dynojet.

 

That may be, assuming 20% DT loss for a DJ. That doesn't make too much sense IMO though. StangJets dyno less that DJ's. That that reference SJ's have a loss for manuals at 20+%. ANd that I don't agree with, seems how SJ's are said to be more accurate. I typically go 15% for manual and 20% for auto.

I think there's a misunderstanding. You can't do 20% all around as manuals have less loss than Autos.

 

Looks like a decent price for a nice looking car.

400 HP, not really.

 

Wow, so he rounded up. BTW, the rest of the world (i.e. non car enthusiasts) looks at crank HP because that is what has been advertised by the auto industry. And no one is gonna list a car at 388.3 hp. Must people are gonna round by 25 hp. 325, 350, 375, 400 ext. Stop being a douche and pointing out small embelishments for no reason.

EDIT: The stop being a douche also applies to those people arguing pointlessly over drivetrain loss. You are either
1) selling a car and advertising the estimated crank HP within a reasonable margin of error (like GM, dodge, ford do on all their cars)
OR
2) you are discussing THE POTENTIAL performance capabilities of a particular vehicle which has been subjected to testing by a "presumably" calibrated dyno. NOTE: ACTUAL PERFORMANCE CAPABILITIES are measured in ETs and MPHs.

So arguing what a cars Crank HP actually is pointless. It either is a general estimate for the purpose of marketing, or has no impact on the cars performance.

 

OK...Im interested now..what would be the right formula for calculating Crank horsepower...so my car makes 410rwhp..is that saying I have a 500hp motor?

 

DONT ask questions otherwise apparently your considered a douche.