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Well, I can add something here (short of additional dyno testing). I have just installed the Sun (Hyperground) kit on 2 family cars -- my 1992 Infiniti G20 and 1998 Subaru Outback, both manual T. Both stock except for air filters and ECU from JWT on the G20.

On the G20 the added boost IS noticeable. It's mostly in the lower ranges, where torque is weak on this series. Tootling along in 3rd or 4th in town is also smoother. Car also starts RIGHT AWAY and the idle no longer drops when lights are used. Mileage -- don't know yet, will report that later.

The Subaru in general seems MUCH smoother, especially again in town use in 3rd and 4th -- less bucking when turning corners, etc. I am less sure about the feeling of additional power. Again, lights no longer reduce idle.

The wiring kit is obviously well made and the installation is easy. I found the recommended "S" kit fine for the small G20 engine compartment. I've recommended to Sun that they sell the slightly larger (length) "M" kit pieces to the Legacy/Outback owners -- I had a hard time making everything reach with the smaller set, using the best grounding points.

More on mileage later.
 

· Paging Mr. Herman
Joined
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1,428 Posts
Discussion Starter · #22 ·
Well I finally did it about bought the damn wires!

Overall, they are nothing to jump up and down for but they did make a noticable difference. The car seems to rev. extremely quick towards the lower RPM range and there seems to be a little extra kick. I have no idea as far as numbers but I think 3-5hp in the lower range is pretty close. Not bad for $100 and 20 minutes of my time.

Also....the company that sells Sun Auto stuff was really awesome. I ordered the wires over the phone and they left the same day. CA to CO in 3 days and only $11.50 for shipping.
 

· Flux Capacitor is the key
Joined
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751 Posts
Its kinda late now, but I was wondering,. What guage is the wires? I think I believe that it might actually gain a little power. Good grounding is needed when you dealing with high power!

You know...I think there was a reason why I took electrical engineering. LOL!
 
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Yes, the Sun group was very responsive on the orders direct to them. Immediate shipping.

I still have seen nothing but positive results, certainly lost nothing or picked up any problems.
 
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