Stand alone or piggyback, Is a piggyback any good Options

[beno]

Hey

I wanted to buy a apexi power fc for my car but I cant find a tuner in new zeland for it so i got told by the same shop to put in a HKS I.S piggyback ecu. I dont no much about tuning but what i have read about piggyback ecu's has made me think that they are not very good.
Is the HKS piggyback a good choice or should i get a stand alone ecu? Any background info on piggyback ecu's is much appreciated as Google didnt help me much...

EDIT# My goal is only 250hp at all four wheels# with stock motor, mods will be
3' exhaust, spark plugs and leads, fuel pump and pod filter.


Thanks for any help

This post has been edited by beno: Jan 25, 2007 - 8:29 PM

[lagos]

im not a fan of the powerFC. it has no knock response built in, and thats a really bad thing.

to get 300hp, down to all 4 wheels, youll probably need to upgrade to a bigger turbo. id start looking into that first, and then decide if you need a piggy back or a full stand alone. since you already have stock 550 injectors, you might just need to make a few minor corrections. if thats the case, a simple piggy back with do the job just fine.