I think it was scummy of bimmerhausperformance to come in to a couple of Hydra overdrive kit threads and start peddling their own product, especially when considering Hydra's reputation and overall ingenuity and dedication to solving problems that us N54 enthusiasts have.
I understand the Hydra kit basically substitutes the vacuum pump sprocket with an oil pump sprocket and compensates for the resulting change in chain slack (i.e. when swapping sprockets) by adopting a different chain length. Given that the kit repurposes an existing part from the factory chain configuration to achieve additional capacity in the N54 HPFP system, I'd say it's a fairly minor variation to a factory design, and a very smart one.
Now, I can see that Gjohnson7771 had access to bimmerhausperformance's kit a couple of months ago. I infer that he received that kit for free or at a discount. It certainly would explain the timing of bimmerhauseperformance's exit from here and the creation of Gjohnson's account.
I gather from this video that the bimmerhausperformance kit is a minor variation of the Hydra kit, as it's specifically intended to be installed without removing the crank hub. That is not something that Hydra have offered, but I understand they have mentioned on here that that is how they install their kits and that it is difficult to do so.
On balance I would say there's been an incremental improvement to the Hydra kit that I think would make DIY installation much easier - it seeks to solve an issue that people have with the Hydra kit.
It's up to Hydra on how they want to deal with a "competitor" like this. Knowing them, I believe they can offer a better and more comprehensive product/kit and I hope that's how they respond to this.
