bro,what gb r u using now?
5-speed manual from Evo7.
Did some research, the Evo7's 5th gear has the tallest ratio among all other Evos.
The Evo8 and Evo9 has 6-speed, but both still has a shorter ratio, lower top speed.
---------- Post added at 03:16 AM ---------- 6 hour anti-bump limit - Previous post was at 02:42 AM ----------
Did ya overhaul da motor?
Yea bro, finally changed to the Toyota high compression semi forged 1JZ pistons i had in storage. Also replaced the main bearings, conrod bearings, & thrust bearings, there were some worn-out markings, might as well do a proper overhaul & replace what's necessary.
The Toyota pistons works great!!! The higher compression pistons makes it drives a like N/A, no turbo-lag at all. Personally, I'm bit skeptical about the compression ratio I have in my 4G63T right now. The seller says it's 9:1 for these 1JZ pistons. But my mechanic friend who helped me with the overhaul did a check & told me they're 1JZ N/A pistons, not turbo pistons.
Anyway, fortunately everything fits and engine is running smooth, it even purrs like a cat when climbing the rev, definitely feels more torque-ky....=)
And due to safety reason, i've switched off the boost controller, letting the external wastegate's 0.9 bar spring pressure to manage boost.
Still running-in the overhauled engine, driving the car below 4000rpm so far.