Hello & welcome another foz in leeds whoop ! ☺ depends what software you want GR in Rotherham will do car berry open source, or there's scooby clinic in Chesterfield, dunc @ racedynamix will drawl to you and if your feeling like a trip Andy forrest in Scotland is one of the best. Also try Richard Henry motors ports in Bradford, they use bob rawle I think.
Most of them will advise you change the fuel pump to a stronger unit.