Misfiring - Urgent

[MrHouston]

Just had a new ECU fitted, now the cars missfiring, so fuckin annoying!

I can;t accelerate to hard or it just jumps like crazy and makes a loud noise, anybody got any ideas?

[vtr2007]

maybe theres a fault with the new ECU if it wasnt doing that before?

[Quick]

Take it back to where the ecu was fitted?
Was it the correct ecu?

[saxochap]

sounds like a faulty ECU, or just pure bad luck !