From guys that have gone from -5’s/2530’s to a 9180/1.05, it behaves like a pair of -5’s to 4000 rpm then the 9180 will walk away from it.
If an 8374/1.05 is on 500 rpm earlier than a pair of -5’s then how much later can a 9180 be?
*using -5’s as a yard stick.
How hard will you be leaning on it?
It won’t be the most responsive setup in the world but you are talking about a 94 lb/minute turbo all in.
Do you plan on building this soon? How hard do you rev it? Any other changes apart from the snail?
Its gonna be interesting to see the difference, especially in the real world.
Still on the factory gearbox?
I believe the dump pipe has to move back 7-8 mm. Going to dummy fit mine soon. Seems like if you want to use all of the available compressor in both the 8374 and 9180 (moreso) the 1.45 is needed.