That late??
The thing spools at like 2,500rpm on my dads r33 (full zorst, FMIC, 10psi)
Its the least laggy thing ive driven so i thought it wudnt be too bad if u put it on an rb20, well not 4,000rpm bad... i was thinkin full boost at like 3,700ishrpm (dependin on gear).
Good to know it pulls all the way to 8,000rpm not that u do that or anything hehe