its a scam, just a .25c resistor that plugs in the iat sensor to fool the computer into thinking it was getting colder air or something like that, i remember when i had a mustang, ebay was flooded with them..
Quote from Westers was $495 USD. They are in Canada.
Here's a paste of their email back to me....
>> $495 includes return freight. If you ever do upgrades to your vehicle in
>> the future, ECM programming
>> is free. 20% HP gain with 91-93 octane.
>> 15% with 89 Octane.
>> 10%-12% with 87 Octane.
>> There 'may' be dyno graphs on our website, but I've never had a complaint
>> on these after reprogramming them for
>> anyone, including Saturn Motorsports (we used to do all their programming
>> till they folded last year).
Fuel economy has always been better with our tuning, and we actually turn
the fans on 'earlier' than
GM does to prevent thermal overloading. So instead of having your fans turn
on at 215-230F -- we
turn them on at 195F ! Definitely a plus when sitting in traffic.
Westers has a good reputation, but requires AFAIK the removal of the PCM, shipping it to them, and getting it back and installing it again.
You may also want to consider Trifecta, which can email you a new tune, and have you run an acceleration run using your laptop and the software they supply (plus an interface cable they loan you via mail), email the new file back to them, get a final revised file customized exactly to your specific vehicle back by terurn email, and away you go. Down time = zero.
1957 Jamaican bodied MGA
1958 MGA Twin Cam (race car)
1962 MGA Deluxe Coupe
1969 MGC roadster
1971 Jensen Interceptor
2009 Pontiac Solstice GXP Coupe
2007 BMW Z4M coupe
Recently departed: 1965 Jensen CV8, 1969 Lamborghini Islero S, 1988 Pontiac Fiero GT
Mods at http://www.solsticeforum.com/forum/f...thread-102178/