Which one would be easier to use and deliver more power i dont know alot about ecu's and looking to purchase a chipped or already chipped ecu
so please give advice and does hondata s100 deliver 15hp?

 

Neither system actually "adds" horsepower.
What makes power is the tune being right.

It would really help if you listed the engine application you are going to be tuning.

 

NepTune has more tunable adjustments than S100. Adjustments that can be valuable in safely pulling the most power out of a setup.

 

And even though this isn't directly related to your question, you have datalogging as an option with NepTune via a datalogging cable or Hulog setup whereas S100 doesn't allow you to have this capability.

 

Neptune!

 

So Neptune For My 1994 Ls?

 

Ubderdata! lol no...

Talk to your local tuner which is going to be tuning the car & use what ever system they tune.

 

agreed.

but if it were between S100 and Neptune, neptune gets my vote every time.
way more of everything for the money.

if you don't have a lot of mods (ie no cams, boost or huge compression changes) you may be better off sticking with the stock ECU.

 

so with i/h/e should I stick with stock ecu?

 

Neptune.

 

i/e - yes
h - depends on what's done.

(i = pre-TB intake, not post TB intake)

 

neptune