Hi and thanks for your reply.
For the road test, the nitrous is turned on
The delay I'm talking about is the activation of the Minimax, not a delay in the onset of extra boost.
What I mean is, on the road with everything connected up, when I put my foot down to the floor, the pulsoids don't activate and display on the Minimax doesn't change to "--" straightaway. There is a delay before anything happens.
The delay isn't present during testing of the system alone (pipes disconnected, engine not running, ignition on, Minimax on) under these circumstances, the Pulsoids activate and Minimax indicates "--" as soon as the throttle pedal reaches the position at which it is set for (80-90% WOT).
On the road with everything connected up, there's a delay. Once or twice the pulsoids didn't activate at WOT. I was wondering if the ignition is affecting or interfering with the TPS?