just put the Zex kit on my 98 ex d16y8+jrsc+walbro 255 fuel pump+vafc+vortech FMU+ZEX=192.8whp and 170.6 torque. Without the gas 149.7whp and 127.0 Torque. Both were 3rd gear runs. I'll post sheet when i get a scanner. I've sprayed probaly 8 times since and checked plugs and drained oil, to metal shavings on oil plug and the sparks looked good too. Did a compression check and they all checked ok to all within 15 to 20 of each other.

 

This is @ 6 or 8psi? How much spray (I'm guessing 55shot?)

 

sorry. Thats with 6pwi. akd the 55 shot. It seems to be holding up fine.