I just bought a set of bd r850 twins. The question is what am I getting? When I ordered them I said I wanted a 64/s480 setup. They told me the r850 twins was that exact setup.
I can't find any thing on them except older posts saying is a moddified s400 or 475 setup?
Did they send me a set with an s480?
Does any have a recent set or know for sure.

 

Nobody?

 

...?

 

When you order a prebuilt setup from a dealer like BD they build them for the best match.
I would ask them what turbo's they used should be in the spec section of the part add.
If you wanted to build a specific set up you would have to order the parts you want and not the kit. Just call them and chat with tech! You can't go wrong with the basic kit unless your trying to make some kind of specific race or pull set up.

 

Thanks man I'll have to give them a call

 

So it seems I have a s475 I won't know with out measuring it. But I'm only building 40psi? I've backed the waste gate out 4 turns it hit 50psi once. I should be 70-80psi no problem

 

Check for leaks cracked intercooler or? Also Boost numbers are produced by a bunch of factors like fuel injectors injection timing exhaust size and so on. Low numbers are fine if it's making good power. Do not assume it's running bad if numbers are low!

 

R850s are a 64.5 over a 74.6
R1000s are 64.5 over a 82.2

 

I think the boost is a tuning issue it was at the 60 mark when I started having trans issues. But my egt's are still high under throttle but the smoke clears up?

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Also my receipt says 64/s480. What should the s475 measure 74.5mm