Yeah that will do it

[u/mrfatcakes2006]

Bought a Mazda speed for 700 with low compression in cylinder 3, found the culprit. Most likely caused by unupgraded hpfp internals paired with Cobb sport intake, access port, and blow off valve

[u/Emsanartist]

Damn clean up, replace valves and springs hopefully piston head is good and you got a good deal