the blouch website has a misprint. the 1.5xtr is rated at 47 lbs/min and the 2.5 xtr rated at 49lbs/min
Why did i choose the 1.5 over the 2.5? The difference is negligble. I wanted 350 whp before i realized my engine didnt want to make that much on stock internals. I am not gonna push the 1.5 as far as it should be pushed so why go even bigger and have even more lag? in hindsight, i got ahead of myself and should have built the motor first. I should have waited and done it all at once, or settled for a maxed out 18g setup. oh well captain hindsight....
i do not think the size of the intake is going to effect spool at all. i think it is completely unrelated, and it is the exhaust size/shape/length that matters, but i could be wrong.
all in all i really like this turbo, i just wish i had of planned better instead of being impatient as always.
just because a vf series might have the same peak hp number as this turbo does not mean its as fast. its the area under the curve, integral for you math people, that is what makes a car fast. Peak numbers are just peak numbers and do nothing to describe the overall shape of the power curve. Even without understanding the theory, anyone who has ridden in a tuned VF subaru knows they fall on their face afer about 5000 rpms and make jack **** for power, temps rise, efficiencies fall, bad times are had by all
i dont have access to e85 where i live, or else i would already gone down that road. best case scenario is to build the block and see how far pump can take this thing
I am very curious as to how my setup compares to other similar setups. i too am running a solid 18psi from 3400-6700 rpms. it feels good, smooth and linear. i really like this turbo, i just wish i had an ej257 or 207