Same reason to do a boost leak test. Make sure it's all up to snuff. 55k on the clock and I'll be doing the 60k service soon. Nothing more than a check up

 

im curious about this too. so whats the maximun and the lowest on an evo 9? thanks in advance

 

I think accordind to Mit spec's for Evo 4 5 6 7 is :
Max = 12 bar / 174 psi / 24.85 kpa
Low = Not less than 9 bar

Please double confirm with the more experience forumers out here...

 

thanks james for your input but unfortunately i cant seem to find any info on the forum regarding compression on the evo 9. im gonna be doing the compression today so id like to know what are the high and low numbers. but thank you again

 

There.

 

15 low on one indicates some slight piston damage from detonation. not a problem for stock power levels. start to push power that number could go lower quite quickly.

 

ok guys here are my numbers. let me know what you guys think. thanks in advance
dry: 134, 140, 150, 135
wet: 140, 149, 157, 150

the car was pretty warm i had turned it off for about 20 minutes after driving for 15 minutes none stop. the test was performed wide open throttle as well just in case if anyone is curious.