hx35w would be a better upgrade with those injectors and is a proven setup with his fueling box since he has a hy35w

hy35 specs are 56/58/9 vs hx35w 56/60/12

hx40 specs can vary....

the ideal one is a 60/65/16, but most are 58/65/16

blow off valve is definitely a good idea for a 40 since they are known for breaking shafts if you bark the turbo too many times (let out of the throttle too fast)

better off with a HE351cw if you wanna keep the upgrade on the cheap...

spool much faster than the hx40, stronger shaft in it, and better drive ability than the 40.

here is a whole thread of bashing the 40 if you don't want to take my word for it

Holset HX40 Super HX40 specs - Competition Diesel.Com - Bringing The BEST Together

 

You obviously don't even know what that turbo is. Maybe you should look up the specs on it before doling out advice.




OK, I apologize. I thought those chinese hx40's were all the same. I see it has a 68mm inducer. You were right. Sorry.

It's been one of those days.