got a problem with my car again each time i come on boost its missing loseing all power and back fireing any ideas folks but it runs fine off boost

 

all the hoses tight, no cuts?

 

spark blowing out on boost!!! how good r ur leads? when u last change the fuel fillter? is ur timeing spot on?

 

everything seems fine cant work it out hoses are all ok
its a s1 engine got new pump plus accumualtor all sensors are new as is dizzy, fuel filter ,leads plugs
only me weekend car so doesnt do many miles wanted to use it tonight as well bloody typical

 

might try me spare leads on it might be that