Umm...no sorry. The Eclipse 4G63 is much weaker than the EVO's 4G63.

 

I didn't see that anyone else answered this: It's like inches and centimeters... they measure the same thing but using a different scale. See this chart (and others) for conversion:
http://www.chromatography.co.uk/TECH...r/Pressure.htm

or this tool to convert a specific number (eg. 21.543psi= ???bar):
http://www.centauro-owners.com/articles/psibar.html

 

Don't Slap Him, Punch Him!!!!

 

I had Vishnu tune my evo on Tuner Transformation and my boost peaks at 24 psi and tappers to 22 psi, I also have Exeede, HKS 264/272 cams ,cam gears ,10.5 housing and turbo back exhaust with test pipe. Im making 328 hp at the wheels

 

One thing too that gives you more room to up the boost is higher octane gas...

 

They are basically the same thing, just differenet measurements. Its like the metric system and decimel here. One is used throughout the world (SI: International System of Units). People like to use bar because its so close to atmospheric pressure.

easy way to convert bar to psi is

bar x 14.5

and psi to bar

psi / 14.5

here = USA

 

actually its 14.7 psi to 1 bar. but that aint much of a difference

 

It's like my answer and blackevoVII's answer: The same thing, but slightly different

 

i meant to quote the guy not you...hah im too lazy

yea 14.7 14.5...blah blah.

 

you can run US spec Evo8 up to about 20-21 psi dependant on other mods. It is more dependant on fuel cut, and thus total airflow signal to the ecu than anything else. The stock injectors/fuelpump is more than adequate for all the airflow the stock turbo can deal out in any situation.

Knock signal into the ecu will also have an effect. you can run 21psi on pumpgas with no trouble, but that doesn't mean you are actually making any more power than you would at 19psi becuase of the knock/ignition timing retard.

If you have 3exhaust/intake modifications the total airflow signal to the ecu will be higher becuase the engine is not restricted and can natually flow more. you will be able to run LESS boost before fuel cut happens once you mod the car, although you will be making more power @19psi with mods vs 21psi stock.

put afc or flash into the mix and the fuel cut is not the limiting factor anymore, then it's all about octane/knock/AF ratio tuning to determine what the maximum safe boost is.

 

Id love to see this no modification 70hp increase method. headgaskets on the evo8 are multilayer metal gaskets. Those are extremely strong, on a DSM they are good to over 600whp. 340 shoudn't budge a stock motor.

 

im running 25 psi it likes it, but i only do it once a month 4 or 5 runs
i dont think ill push it any harder till i build it

 

Your friend is right about not damaging the engine w/ 340hp but it has to be tuned to run safely and it will take much more than a boost controller to get you that power.

 

he probably meant 340 hp at the flywheel

 

I think he meant 340hp not whp