Just wanted to give a thumbs up to Justin and JDM for a job well done. I just upgraded my 99 to a 90 mm mass air, oil breather cap, and new j49/69 (different name for 99's). This setup is much better than the old R9 superchip program. Shifts are more crisp but not harsh, and the tracr9 side 2 was not streetable due to lean studder prior to shifting into 4th at light throttle. There is a definate power increase also. I was running 13.6 @ 101.3 here in Boise (3000ft ele.) I am anxious to see what she has in her now. Looking forward to the new pulley setup also.