Hi all
I"m researching a power chip for the zd30 and have found a product called chip express, the figures look great the price is good ( $650.00 ) but can anyone tell me are they any good ?
Does this chip just increase fuel pressure like most or does it alter the engine timing which I understand is a better way to go.
I like the steinbauer power chip but at $1500.00 I dont think I could bring myself to spend that much.
any thoughts or information is greatly appreciated.

car is 02 zd30 auto with 3in exhaust blocked egr and dawes n needle valve and aftermarket intercooler.