Is it normal that my evo 8 won't boost utill it reaches 4k rpm? or something wrong with my turbo or engine? Thanks.

 

what are your mods on your car?

 

have u tried boost leak test?

 

So far just ARC intake and rsr exhaust. I'm very new to the evo scene which I always been with MR2 turbo and still have it. They are totally different beasts, in term of boosting my mr2 more consistence less lag. On the other hand, evo takes more time but it pulls harder, feels like the clutch slip too but new clutch. Also, few times it went all the way to red line where I have to be very careful. I don't know if that's how evo works.

 

By the way, I checked the turbo and so far it has almost zero play so I think the turbo still good.

 

By the way, I also did check the turbo and there were almost zero play. Do you guys recommend evo 9 turbo replacement?

 

Perform a boost leak test before you do anything else.
MR2 is supercharged is it not?

And there is a simple test using 5th gear if you suspect the clutch is slipping.

 

I have mr2 91 turbo charge, how do you perform boost leak test?

 

Welcome to the Evo World where Boost Leak test should be the first thing to learn to do yourself. There are many threads on this forum.

 

Cool, let me do some research. Thanks.

 

https://www.evolutionm.net/forums/ev...g-how-why.html

 

Wow, I will make the testing tool this weekend and test it out. I really appreciate all of your guys inputs. Like I said, evo scene is still new to me. Thanks.

 

Be patient, make the tool, and when you pressurize the system, you will almost certainly encounter numerous leaks. Also, be sure to check the EGR system on the backside of the engine, which is a notorious trouble spot.