FG XR6 Turbo Coil Packs

[xrkiwi]

Hi have been working away on my toy G6e Turbo motor into my BA Ute quite modified will list when I get a chance.Was at the tuners yesterday had to re gap plugs to .7 but we are still experiencing a hesitation if you will at 5000rpm or there abouts.We are changing to copper plugs this afternoon to try and combat this.My Question is  could it be coils they have done 130 000 kms was told that FG coils are the best but can not find any info on what type once modified.Injectors valve springs intercooler hot side intake massive dump into 4 inch xforce running Ba manifolds and turbo Garrett 3582 etc running at max 16psi.It cuts but then you can go through it Tuner researching today just wondered if anyone here has experienced this or possibly has some insight.Thanks in advance.