Hi

I am new to this forum, looking for some turbo information.

I have a 2004 Dodge SRT-4 with a Mopar stage 3 turbo upgrade.

A well known turbo builder was to upgrade my compressor wheel to a 47lb wheel (similar to a 20g). Due to some prior modifications to my compressor inlet, they could not perform the upgrade, but had already modified the turbo in such a way that they could not put the original stage 3 compressor wheel back on. I guess they didn’t measure it before working on it.

The only way they could get the turbo to work with the inlet I have on my turbo was to install a 16g6 compressor wheel, which the turbo shop called out as a 44lb wheel, or an Evo 9 compressor wheel. I was advised that this would still be a performance upgrade from the stage 3 compressor wheel.

From what I have read, the Evo 8 and 9 compressor wheels are identical.

Info on the Mopar stage 3 setup:

The Mopar stage 3 turbo is called out as:

TD05HR-15GK2-10cm2
It has a compressor housing that is slightly larger than an Evo 8 housing, but smaller than the Evo 9.


The compressor wheel is called out as “15gk2”, which would imply that the 16g6 wheel you have in your evo 8-9 are superior in flow.

However, the inducer and exducer sizes stated online come up as:

Mopar Stage3 TD05-15G -
Inducer: 1.94
Exducer: 2.56

MITSUBISHI
Mitsubishi 16G6 (EVO. VIII wheel)
Inducer: 1.89"
Exducer: 2.68"

I have been told that the inducer on the EVO 8-9 wheel might be as big as 1.904”, but that still makes me question which wheel will perform better.


There aren't any known compressor maps for the stage 3 turbo.
Any thoughts?


Thanks guys.