lost power and mpg help!

[obxtiger]

i just had my 12000 mile service about 2000 miles ago. gas mileage going down from a average of 46 to 48 to only 40 to 42. power also down 60 to 80 mph roll on in top gear takes about 8 seconds. it's not much better if you drop down a gear. it makes passing very interesting. any suggestions to yalk to the dealer about. thanks

[Guest]

any suggestions to yalk to the dealer about. thanks

It sounds like they either:  downloaded a new mapping program to the ECU. Or

they phuqed up the balance of the throttle bodies. Or

maybe your chain's too tight now. Or........etc.etc.

[obxtiger]

thanks i did change my first rear flat by myself but i don't thank that would cause all my problems. my 4th flat in 6 months by the way  :oops: