I've been considering it for a while, but may sell the car soon instead, so not sure now..
Theres a DP Chip for sale on the Pathie Forum for $550 which I'm ummming and arrrring about (maybe you too???)
Certainly most on the Pathie Forum who have chipped with many different brands speak positively of it.
Some brands will recommend an exhaust temperature monitor, some won't. I asked the DPChip people why they didn't recommend it, and they said "cos we don't set our chips so high that it makes the exhaust temps so hot" Other brands apparently are more aggressive in their settings and produce more power and torque, but at higher temps. This is probably the reason I haven't done it as yet as there are two trains of thought, and I can't make up my mind......:noidea:
As posted above, a larger exhaust is also a good idea for improved performance, with or without a chip