[sambeeb]

Hi,
I've just fitted a boost triggered system to my vw polo gti 9n3 1.8T motor. My 0.4mm"A" nozzle is positioned post intercooler about 7 inches from the throttle body. I was surprised to see that just over that short distance (the AIT sensor is located behind the throttle plate) I was seeing a drop of 10 degrees. It is continuing to cool beyond that of course - the plenum is actually cold to touch for the first time ever!
My question relates to plug gaps. Having double the boost, I'm running 1 heat range colder plugs with the suggested gap for my engine at 28 thou. Firstly, is there any truth to the notion that in water injected turbo cars that standard tip plugs are more quench resistant than fine tip iridiums at the same gap?
Once water injection is installed, can a smaller plug gap be run for better off boost running and/or to make the plug more quench resistant?
I ask because my K03 turbo'd car comes on boost very early and hard so in playing with the system I've been setting it to trigger earlier and earlier eg 9psi at the moment, assuming that water delivery lag will then be less of a problem if I do this. Basically I want to know if I can potentially run lower boost trigger points without bogging by running smaller plug gaps?

thanks for any help
sam