Boost leak test questions...

[st1989]

hi guys,

 

J-spec 94 twin turbo,

 

did a boost leak test according to..

 

http://www.supraforums.com/forum/archive/index.php/t-78644.html

 

will it matter if the car is set to ttc mode?

 

also, this may sound silly but when i pressure up the system i did find a few leaks and sorted them, cant hear any more but the pressure drops pretty quick, could this have anything to do with valves being open in the head or should the pressure in the system stay put?

 

the car only hits around 0.6 bar of boost, i have the car in ttc just now, it used to boost at a bar but all of a sudden wont anymore, when i put the foot down it will spike up to a bar then drop and settle at 0.6ish,

 

feels like the car is hesitating, i have reduced the spark plug gap to 0.6mm,

 

there nology D4YS plugs? anyone any view on them?

 

had a boost leak for a while now, not sure if its something to do with the wastegate?

 

im sure when i hit boost i can hear to what sounds like air hissing from somewhere but am not 100% sure,

 

thanks in advance!