HKS Supercharger
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You should contact 350zspeedracer at My350Z.com. He had it installed, and performance was dead on with what HKS published. He said there was a good amount of power from 2000-5000. After that it dropped off almost as quickly as it began. It's a great kit for the street, and the price is actually lower than the MSRP. Avalon Racing has it for ~$5400.
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78 Posts
my favorite and most complete supercharger kit to date!
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78 Posts
oil cooler / intercooler / fuel mangement system / new injectors /
this kit is the only one where it actually didnt feel overly HOT when you pop the hood after the car is run...
this kit is the only one where it actually didnt feel overly HOT when you pop the hood after the car is run...
The HKS supercharger and the Vortech supercharger were both written up in this months Turbo magazine. The gains of the HKS kit were substantially less than the Vortech kit, and the Vortech kit has *much* more time in the field. While the install looked really clean, for the money, I don't think it's worth it. I'm sticking to my guns on the Vortech kit.
It would be interesting to see a tuned HKS kit. I would have to assume all the examples we have seen is the pre-tuned kit from HKS where all the Vortech installs have been tuned by a tuner.
From the dynos we have seen of the HKS kit the top end is where it is lacking but is this because of the pre-tune from HKS. We will only know when someone decides to tweek the HKS unit and then we can compare apples with apples.
From the dynos we have seen of the HKS kit the top end is where it is lacking but is this because of the pre-tune from HKS. We will only know when someone decides to tweek the HKS unit and then we can compare apples with apples.
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39,216 Posts
I'd have to agree somewhat on this one. I just read the latest mag with a tuned HKS kit on the Z. The kit comes with EVERYTHING, including a 35 page instruction manual. I would almost buy one for the discounted price that Avalon is offering and do it myself...if I had the money. Maybe that will be my winter project - saving money for it.
Micheal, I think you will find that the HKS unit will be very limited in it's future power increase capability when compared to the bigger centrifugal superchargers (Vortech and ATI) as the rotrex/HKS unit has very limited mass air flow increase potential.
From what I have seen on the rotrex S/C previously (have used them on holden and Ford V8 engines) I think you will find that the HKS S/C will have superior low rpm power though from there on in the bigger centrifugal superchargers will produce the best power in the mid to high rpm.
Would be very interesting to see the torque and power curves of all of the popular S/C systems on the identical fuel octane and tested on the same day and dyno. :thumbsup:
Peter
APS
Peter,
This is true. I have done some calculations on the Rotrex unit and the amount of improvement available to stay within the rotational impeller limits of the parts. Basically their is not much room. HKS has modified the standard compressor housing with their own trim but IMHO I also think it will never flow enough to match the ATI/APS/Vortech kits if high HP is required. Unfortunately I cannot get my hands on a flow map of the modified unit.
Michael
This is true. I have done some calculations on the Rotrex unit and the amount of improvement available to stay within the rotational impeller limits of the parts. Basically their is not much room. HKS has modified the standard compressor housing with their own trim but IMHO I also think it will never flow enough to match the ATI/APS/Vortech kits if high HP is required. Unfortunately I cannot get my hands on a flow map of the modified unit.
Michael
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