I used the 3L heads so the compression is fine and since i don't have any exhaust mods the engine is not overly lean but i can tell you that the engine can def suck and spit a lot more air than it is. My only intake mod is the KKM. I really wish i can get my hands on a 65mm TB and so I can take more advantage of the porting of the heads. I want to dyno it now and then see what kind of gains i get after i do mods so we can compare between 2.5 vs 3.0 mods.

jiako|98 svt silver|kkm true rev|18" Enkie RS5 wrapped w/falken GRB FK451 215/40|Mesh grill|
Sony headunit|Boston Acoutics (4)5X7|Memphis 1100 amp|(2) JL 12W3|KVR X drilled rotors|35% tint|2.25" True Duals w/ Magnaflows| kkm pedals|LSD|Fidnaza Flywheel|Centerforce Dual Friction Clutch|FMS wires|Konis/Eibach|ESP bushings and Mounts|75MM PRO FLOW|DMD|Aluminum shifter & E-brake handle|SAFC|HID's and a few more cc's 196.1 and 183.4