3 port boost solenoid.
 

Having my scooby mapped next week by racedynamix carnt wait, feel like a little kid again lol. I have a 3 port boost solenoid to fit is it advisable to let the mapper fit it. Cheese phil

yes

Ask Duncan nicely,and he will fit it for you for free just before mapping :-)

Depending on the car, id advise doing all you can before the map

fuel pump
plugs
intake
injectors
map sensor
check all hoses etc

if all these are done a good session wil be had, nothing worse than hearing... If you had......

good luck bud and enjoy