Originally Posted by AlfaLincs
There are nowhere near the opportunities for gain on the V6 from chiptuning as there are on the diesels. You may get 10-15 BHP.
I'd have a look at the squadra tuning site as they have had a good reputation for not 'overegging' the claims too much, and they have some before /after graphs to compare.
www.squadra-tuning.com
Actually i've just looked and they have no section for the 166..so I'd make an enquiry first just in case.
I'm now getting vibes that say the 166 does not have a swappable chip. You have to reprogram the existing eprom,,,so its a remap I'm beginning to think.
AlfaLincs
I can recommend Squadra highly, they remapped my GTV V6 3.0 and it runs a lot better then before. Not a huge increase in power but a much improved throttle response!
They do list the 166 in the
pricelist but you have to send them your ECU to be remapped (or visit Holland

).