Inflated Dyno? 04 Z06 125k miles!!!

[blackg5]

Just got off the dyno yesterday at JPC performance in Millersville, MD and wow, I was shocked at the numbers..

Mods- SW 1 7/8 headers, 3" catted x-pipe, Corsa Pace catback, K&N, Diablo predator tuned..



Even if the dyno reads high, I still think she's doing well for the miles on it!!

[2MchFun]

NIce numbers!
They say they get faster once they are "broken in" (I think yours qualifies)

[YumaZ06]

Welcome to

Numbers seem a little high for only those mods. :-?

[blackg5]

Originally Posted by 2MchFun

NIce numbers!
They say they get faster once they are "broken in" (I think yours qualifies)

thanks! thats what I tell everybody!! bought it 3.5 years ago w/ 15k on it, she's the grocery getter

Originally Posted by YumaZ06

Welcome to

Numbers seem a little high for only those mods. :-?

I appreciate it, not sure the settings on the dyno to make it read so high, but we'll see what it traps n let that speak for itself

[PerforminNorman]

It's a freak. Nothing wrong with that. I think my 02 made 372 with just a filter.

[zo642]

My 04 makes 385.Mostly stock

[PerforminNorman]

Originally Posted by zo642

My 04 makes 385.Mostly stock

You ARE a freak.

[blackg5]

Originally Posted by zo642

My 04 makes 385.Mostly stock

on what dyno?


I'm really not worried about what the number says, just glad it runs well, and hoping to get a nice trap speed...

[jishaq]

Originally Posted by zo642

My 04 makes 385.Mostly stock

Let me ask a newbie question. My 2004 Z06 has a little emblem that says "405 HP" on the sides. Therefore I've always assumed it puts out about 405 HP.

Yet it seems from this thread that it's an exaggeration, unless I'm misreading something here?

[YumaZ06]

It's supposedly 405 hp at the flywheel, give or take (usually more).

[MikesZ06]

Originally Posted by jishaq

Let me ask a newbie question. My 2004 Z06 has a little emblem that says "405 HP" on the sides. Therefore I've always assumed it puts out about 405 HP.

Yet it seems from this thread that it's an exaggeration, unless I'm misreading something here?

As Tom indicated, rwhp is considerably different than flywheel horsepower (which car companies use in their advertising and promotions).

The 405 hp is relatively accurate from what I've seen dyno'd on stock C5Z's (after adding back in the drive train loss).

Mike

[IVOZ06]

My 01 dynoed at 400 rwhp.

[MikesZ06]

Originally Posted by IVOZ06

My 01 dynoed at 400 rwhp.

IVO, your nose is growing as you type!



Mike

[jishaq]

Originally Posted by MikesZ06

rwhp is considerably different than flywheel horsepower (which car companies use in their advertising and promotions)

Thanks, that's what I was missing.

[blackg5]

Originally Posted by MikesZ06

As Tom indicated, rwhp is considerably different than flywheel horsepower (which car companies use in their advertising and promotions).

The 405 hp is relatively accurate from what I've seen dyno'd on stock C5Z's (after adding back in the drive train loss).

Mike

Car made 334whp with 90k miles, all stock on a Dynojet... Even though it was on a different dyno this time, +65whp give or take is