I see the phrase factory beast or just beast mentioned when an evo does better than average when tuned or has simple bolt ons added. Better than average meaning better tq and whp numbers than are to be expected. My question is, and pardon me if its a dumb one, what is it that makes the extra power that qualifies it as a beast? Is it the motor itself holding expected amount of boost yet making more power? Is it the motor being able to hold more boost than usual? Is it the motor being able to be tuned better in a particular way?

 

I'm thinking anything over 400HP on a mustang is a beast, I'm more at the soft dog level at the moment

 

The way I have looked at this is some engines just 'click'. This meaning that every part of the engine works in a very efficient and powerful way (ever so slightly better than usual?). I have a buddy that had an 07 STi tuned with full bolt-ons and it was ~50 hp higher than the tuner has ever seen.


I am assuming tolerances of engines are pretty tight so I don't know what specifically would be different. Food for though...

 

So youre saying same boost same mods but the engine itself just works better than normal, creating more power than usual.

 

I guess the meaning "factory beast" could mean different things to different people. If someone uses that term then I'm assuming the car is on a stock block. The safe limit for a stock bottom end generally speaking is around the 400tq. Usually someone making in excess of 500whp is pushing the stock bottom end pretty hard and might deserve the moniker of "factory beast".

In the past engines came from the factory with more variation in tolerances then they do now. This meant there was a larger variation in engine output from engine to engine even if they were coming off the same assembly line. In modern times factory's have much more sophisticated equipment. This allows them to be more accurate, use tighter tolerances, and still stay efficient. All this adds up to the variance in engine output from engine to engine being much smaller.

"Factory Beast" (and other similar terms) in that past refered to a car making more power then what it was rated at from the factory with no additional modifications.

Than again, what do I know. Sounds convincing though, right?

 

Yes it did sound very convincing!

My complete wild *** guess is - There may be more available performance baked into the evo than the next factory performance car because the drive train was developed for a race car first, consumer product second. By rule Mits had to sell the car on the street if they wanted to rally it in the WRC. The street car was an afterthought. So the race car bloodlines went from the first evo on up until Mits left the WRC.

Figure the vast majority of your run of the mill tuner car, one of the ones that are dynoed a lot with smaller gains after bolt-ons, etc., are engineered the other way around. So with the evo you're basically popping the cork Mitsubishi shoved in there to make it more of a street car.