Please keep in mind, this dyno graph is 2 days before the 6 year old motor popped, with less than 50 psi of compression on Rotor 2.


Edit: Reading on my phone… You did acknowledge the engine condition from the jump… My b!!

 

it made 434 whp DJ at 17 psi in the initial build phase with a less than optimum engine condition.

In your initial build phase the EFR7670 only made 419 whp DJ at a much higher 26 psi.

And apparently still haven’t picked up on the turbine housing differences that I’ve had multiple conversations with the wall on for the last two years. Otherwise it might have been recognized that the Pulsar 0.85 A/R div T4 housing is going to be a closer equivalent to the BW 1.05 A/R housing that was on the EFR7670.

To put it in perspective, the G30 1.06 housing is a closer fit to the EFR8374 0.92 housing. That’s why I chose the -770 compressor for the build I’m working on.

To be fair, I doubt they will spool up quite as fast as the EFR at the very bottom, but how close and whether it will matter is yet to be determined.

The size dimension differences allow the G30 to fit easier and also with more separation from the LIM if it’s done right. That didn’t seem to get much consideration on the manifold that was posted up. There are also likely to be differences between them that aren’t discernible on a dyno graph.

While I’m on my soapbox, let me clarify that a V-band is still a single scroll. The differences between single and twin scroll didn’t suddenly vanish when the V-band version showed up. On the G30/35 it’s still only a single 2” pipe size. So you’re merging two 2” pipe sizes into a single one and so far nobody is using a divider to shield them from interfering with and crossing over each other.
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Has anyone got any real word data on a g35-900 T4 1.06 divided? Not interested in the 1050

Curious to see spool.

 

should be pretty good imo

you could even look at the G35-900 with the Pulsar PTG35 0.85 div T4 housing rather than the G30 turbos for the lower hp range, it should flow about what the G30 1.06 will, but is likely not the best response for autocross on E85 etc.

the estimates for my rationale:



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or alternatively the G40-900 with 0.84 A/R for less emap


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