I seen that these are usually 80$ but i found this one for 25$ is it any good JDM High-Performance Ground Wire, Scion tC, Blue ? and do they really help the throttle delay and get a little better gas milage. thanks

 

Nope.

 

JDM mixes with tC like oil and water.

they do not belong in the same sentence.

 

 

then which one should i get and will it help gas and atleast throttle delay.

 

no, it won't. it is garbage, snake oil, junk. might as well get a turbonator.

 

oh, and you can get them for like $2 on ebay. i got one way back when, when i learned they did nothing, i decided to use it to decorate my room. looks kinda cool hanging from the ceiling.