171702 with 1.15 ar

Your not gona make 600 hp with turbo if by some miracle you can there will be no longevity of that turbo

 

How high of an altitude are you running in? If you are up high 3500ft or above 24/7 I would say go for it to see if you like it. EGT's are going to be an issue when warm or at lower altitude. You will find that because of the restriction more RPM on a climb will not equate to lower EGT because of back pressure at lower altitudes. Yes on faster spool. For most use cases the 1.32 is really the go to.

 

When you did your motor work, did you put a rebuild kit in the engine brakes? Jake maintenance tends to get forgotten about. Springs get weak, solenoids, accumulators, seals all wear.

A non variable vane geometry turbo older truck will never build boost and hold back like a VGT turbo truck.

As for overspeed. If it is an actual borg warner turbo, and you do not drive like a crazy person, again at your altitude I do not think you will have a problem. If you have the fuel to push that thing up past 50psi .... maybe. If you let off abruptly on every shift and stall the compressor to make the cool noise, definitely. But if you roll on and off the throttle driving a non stock truck responsibly ... it "should" last.

 

What your worried about over speeding that turbo would be my biggest concern like it was mentioned the EGTs are also something I would have my concerns with I am not a fan of that turbo and would even be less of a fan of it in mountain driving
I’ve never ran a exhaust brake myself but have heard they work well

 

EGTs will be higher the higher you go in elevation. Less oxygen/fuel equals higher temps.

 

I guess I missed it…what engine is this going on?