Well, I had psi readings of the T500 when the dually had stock injectors.
I worked on my uncles truck, stock injectors, needed a new hpop. I had a hpop from Joey, the modded 17 which was smaller and made before the T500. Had 20k miles on the pump.
I threw it in for him and the psi went higher, but I wanted to see more. Still wasn't up to par as the T500.
Bought an Adrenaline and then put that in.
Psi was barely any better then the Modded 17 and it was lower than the T500 on my dually was with stock injectors.
I'm positive a T500 would've worked better if I would've put one in.
In the end, they're still close in performance. I just honestly think the T500 out edges it.
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There is a lot of assuming in this post. Testing between two different trucks can yield very deceiving results.
1. What condition are the injectors and their o-rings in
2. what condition is the oil in
3. what oil is being used
4. who is tuning the truck and what are they demanding out of the pump
I believe all of the options currently surviving in the HPOP game are quality. We watched a certain company attempt something and fail miserably. The ones that stayed conservative are still selling hundreds of pumps a year and they all have great track records. Obviously the HBjr is new, but I would say it has already proven itself to be reliable.
You've got three options and they will all meet the same goal. If they aren't enough, buy dual pumps.
We sell the Adrenaline because of our working relationship with DieselSite and the service/quality they provide. Their attention to the small things like packaging, shipping, whats included in a kit, cleanliness of parts, ect.... Not to mention the pump is badass as well.