2008 Mitsubishi Lancer Evolution GSR: Doing The Math

277.5 whp

220.5 whp

1 dollar!

er....252 whp.

I looked it up, it currently got:

Bigger front-mounted intercooler
upper hard intercooler pipe
cold air intake
ECU reflash
AMS turbo cat-back exhaust

I say about 275 whp on a dynopack on 91 octane.

$1 Bob! Oh wait, this isn't Price is Right. 296 whp on a roller-type dyno or 309 on a hub-mounted dyno. Call me an optimist.

I think you're all low, I'm guessing 322.5 whp.

287 WHP

But I don't get this exercise. You aren't trying to beat the GT-R in the quarter mile. You are trying to beat it on a track.

Tires, brakes, suspension....and then power.

Joe

Correct. Handling upgrades = far more important.

Weight reduction = even MORE important.

Power boost = last priority.

That power / weight ratio on the Evo is shameful. Methinks this car ought to stay in the video game hall of fame with the 17-year-olds. The more I read about the Evos the less I like them.

270 whp.

I think you guys should look at putting the GSR on a diet. I know you need to keep the back seat and what not, but get some lighter wheels/lighter rotors, pull the spoiler off, maybe look into a lighter hood/trunk, light weight battery, take out all the junk in the trunk.

I bet you could get 200 lbs off that thing just by hitting it with an ugly stick a coupla times.

And for all of use who don't have cars backed by Mitsu, I don't think weight reductions have much of an effect on your drivetrain warranty (bumper to bumper is another story)

Remove the spare and get a 1/2 weight battery (still completely streetable, especially in SoCal). You'll drop 50-60 pounds right there.

I'd stay away from lightweight wheelssince you want to, I think, drive the car to the track and get these numbers.....lightweight wheels tend to be more suited for track duty than dual-use. Or they are ridiculously expensive.

That being said, I don't know what the stock wheels weigh. Maybe you could shave off 5 pounds and still retain good wheel strength.

Or maybe you could downsize to a 17" wheel with a shorter tire sidewall to actually increase the final drive ratio and cut rotational mass at the sametime.

Wow, whp? I'm guessing the hp is horsepower, but what is the w?

Wheel HorsePower. When you buy a car, they rate the hp at the camshaft. A car will lose some power transmitting the power to the wheels through the friction in the drivetrain, and effort to spin the wheels (esspecially with all wheel drive)

whp is measured at the wheel (duh, right? =)) so it takes out the guess work of measuring the engine horsepower and subtracting how much is lost through the drivetrain. Because of that, it makes a great measuring stick.

Cool drawing.

"When you buy a car, they rate the hp at the camshaft."

I'm sure you mean crankshaft.

Except for some cars, like the SRT-4, which Dodge heavily underrated. My car said it came with 215 hp and actually had 220.2 at the wheels stock. Whoops.

Is it sad that I sat here for 5 mins trying to decipher your integrals? Only when I saw the square root over the entire problem without "C" being squared beforehand did I realize I had just been punk't (sp?).

I think you guys are way off. With an AWD application, I imagine your WHP numbers are gonna be closer to 240.

Thanks mazdaspeed.

Crankshaft.

Umm... I'm going to have to guess...
317.6 AWHP. Last I checked it makes about 370 at the crankshaft with your mods right?
-If I were modding it for GT-R territory I would give it some serious suspension upgrades along with super sticky tires. Then I'd move to some lightening (wheels, pull out the spare), after that I would get a few more power mods to boost it around the high 400 low 500 range.

MS3lvr92, 15% drivetrain loss or so is way too generous for an all-wheel drive vehicle.

My guess's around 280 hp to wheels with A/C and all accessories turned off.

This project reminds me of C&D'er's efforts to soup up an EVO. I vaugly remember them getting something like 430 HP or so out of the engine, only to blow up different parts of the driveline each time they tried to use it.

Meanwhile, the folks over at Turbotrix are claiming at least 670 HP and 147 mph from their efforts with an EVO VIII. It doesn't sound very street-legal though, as a Nitrous Express system is involved :-0

estreka, the X makes 240 stock......

It still got the stock cats, so it is somewhere between 250~300, that's why I said 275. It would be 300+ without the cats.

"317.6 AWHP. Last I checked it makes about 370 at the crankshaft with your mods right?"

370 was a claim or guess from the previous owner, there was no dyno # to back it up.