its not completely useless... but ur still gonna have a slow ride :-/ no matter what you do... so its up to you how u spend ur money, if you decide that its worth it or not

 

If you are really looking to have something fast, you should just save your money for a GSX or GST and it will end up being much faster and cheaper then modding your 420a a lot.

 

Yea I know what you mean but my mom just got me this car and she kinda picked it out so I was kinda stuck with it so im trying to make it work for now
I not trying to have a super fast car, I just want a nice car that is kinda legit. I already got most of the basic mods so im lookin for the next step.
So what will SAFC II do for me if i get it?

 

it'll just fine tune ur stock fuel and air settings... you'll probably get a couple extra hp outta it

 

Are they completly universal?
or do they make different ones for different motors and what not?

 

I have an original SAFC in mine. Have no idea how to do anything with it. It came with the car.

Does anyone have a manual on how to work it???? The web site only has info on the SAFC II

 

yes they are universal