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Guys i dont mean to sound rude but what the f*ck are you doing getting a custom chip with just a exaust and filter ??? A custom chip should be the very LAST MOD you do to your car. Because if you got it tuned and then changed your diff gears or intake or manifold, you would have to get it tuned again to get the full potential out of it. Then each mod you do after that, you would have to get it tuned again. It is best to do all your mods first and then only get a custom chip done at the end.
Completley right, the chip i have in now is re-progamable, so it cost dyno time to change it now i don't have to pay for the chip again. So basically i only wasted about $300 by getting it dyno tuned after the exhaust, but no other mods were planned for 12 months atleast after buying the exhaust. It would have come close to paying itself of in fuel saving alone in that time and it was a much better car to drive during that time.
now i've just had the diff done and the i was planning on getting the cam done (rethinking that at the moment) at which time i'ld need to get the chip canged to suit the cam. So if i get the cam done the place i got the chip will re-program mine so that it will run the new cam, and i can save on the kit cause i don't have to worry about getting there chip just to get to a dyno to have it tuned.