I have a 2004 octavia just before the new model was released. It a 1.9tdi 90bhp which ive had remapped up to 120bhp. Is there anything else i can do to make it go faster?

IIRC the main difference between the 90 & the 110 was the different injectors (and possibly something to do with the intercooler)

You would probably get it to a 110Stock and have your remap tweaked to get it up above that.

I can't remember if this applied to the VAG engines mind, but I think it was.

I'm sure somebody with more know will confirm or deny this.