evo factory throttle body effective bore is 60mm, Airtrek's as far as I can measure is 52mm. Tho I maybe inaccurate with the Airtrek's coz I just measured it without dismantling throttle body. =)
I am driving a Cefiro A31 with RB20 Turbo Skyline GTS engine. Currently I have upgrade my exhaust to 3" from front to back, K&N air-filter, boost controller. Might be mod my side Intercooler to FMIC. Then...
Hehe...no special offer yet. But they are looking at opening special promotion. Still working on that and hope can give us ZTH member more discount..hehe.How about cheap Apexi Turbo Timer (pen type) ...