Xsi horrendously down on power.

[Ed Doe]

*AHEM*

[AdenoidsOOOOOOOWWWWWWWww]
Fiesta 1.6: 976kg, 101bhp. Power to weight: 103.5 bhp/tonne
306 XSi (AC): 1160kg, 135bhp. Power to weight: 116.4 bhp/tonne

Factor in servicing, reduced back-pressure from the straight through exhaust reducing low-end & midrange torque, the fact you're hauling a sub etc about, gear ratios (IIRC the xsi has a very long 2nd, meaning there's a bit of a gap between 1st and 2nd?) and its not unresonable to expect the fezza to be hanging onto your coat tails...

My old flatmate at uni used to have the older 1.4 ghia model, and it really did go like shit off a shovel, I was mildly shocked! It was embarassing at the time, I made sure I was never out in the dt (with only a stage1 tune at the time) at the same time as he was out, for fear of being shown up! lol
[/AdenoidsOOOOOOOWWWWWWWww]


Or it could be you can't drive.


And it's almost certainly that you don't have a '6....