1)239
2)242
3)239
4)239

this a compression test on my jdm gsr what do you guys think can i boost her?

 

Boosting a stock gsr is common, regardless of compression results.

 

When performing a compression test, consistency is more important than psi. As long as the numbers are relatively close, (I think 8 psi is acceptable), your engine is healthy. By looking at those numbers, I would say that your motor is in great shape and it can be boosted. It doesn't get much better than that my friend. Congratulations

 

There impressive numbers, thats a healthy engine you have there.

Go for it boost the life out of her..

 

thanks guys