40th Stillen Supercharger Build

Nism0

Update:

So after my initial post I've notice a loss in power. My tuner said something about data not copying over and sent me a new tune. And this is where the story picks back up.

After speaking with Stillen I recently puts cats back on and only see a max of 7psi very high up in the rpms, basically redline (I'm guessing this means I do not have a 928 impeller?). The map switching has stopped but now I've felt a huge loss of power. I sent logs to Stillen and they said besides running a little rich up top everything is fine.

I also sent logs to my tuner and he said on 2 out of my 3 pulls my throttle body is only opening half way even though he can see in the logs that my pedal is 100% down. I tried doing a throttle body reset and I didn't notice any difference. I checked around for boost leaks and couldn't find any. Though I'm sure a smoke test would be better then a soap and water test.

Any input is appreciated I've been very upset with the results after the amount of money I've spent on this setup. Especially since I really do not have time to troubleshoot everyday which is why I went to a shop.

I guess I will be taking the 3 hour drive back to R/T so they can put it back on the dyno. Getting annoyed, but I guess that's how it goes.

Thanks in advanced to any input. Mark at Stillen has been great and so has Vince at R/T tuning!

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'08 350z Enthusiast
'10 370z 40th Anniversary
'19 370z Nismo Tech