Problem Solved!

 

I'm sure he tuned the car...

I think its the Compression

816hp? was that with race gas? Neema

 

I tuned the car yes and tuned the stock motor 733/512tq. I didn't know lowering the compression would affect it this much. So to solve this , would a larger turbine help? I'm thinking a divided 1.15 AR hot side?

SiAdam - I got the VE numbers from the fuel map.

 

With the lower compression I would run 35 psi on a larger hotside and you should be around what passman made.

 

I think I'm going to try a 6766 divided 1.15 AR if I can't get another hotside. Is that possible to simply swap hot sides or is the inner side different where wheel slides in?

 

1.15 may be a bit big, try going with the 1.00 on the 6766. LJ recommended the 1.00 with my 6466 but they accidentally sent the 1.15. We swapped the hotside out for the 1.00, just haven't run it yet to see for sure how it'll be but i'm guessing that's the ticket size to run for quick spool and good top end on a twin scroll.

 

But you are still at stock compression. He may need the 1.15 secondary to lower compression.

 

Get the 1.15...you should be able to just get the turbine housing and swap them. No reason to swap turbos...get what you have dialed.

 

Yeah I think I'm gonna just get the turbine. Anyone know where I can buy just the hotside?
1.15 should work great for my setup seeing how this motor wants to breath and always has since I could remember.

 

I would call full race, as u will need the vband welded on, and the ceramic coating is available from them also