I was wondering which would be the best for a 300whp setup? gonna run 10psi or so and i wasnt sure which would be best, i figured the 38mm? also i found a tial hybrid which was a 38mm with a 40mm diaphram, would that bolt up to my dumptube because its re routed back into the downpipe so the flanges for the wastegate are in a fixed position i know it will fit a tial 38mm and 35mm and i wasnt sure about the hybrid 38/40mm
The 35 and the 38 are basically the same, you wont notice a difference.
Yeah, the 38 is the replacement for the 35