Coughing On Boost R32 Gtst Mostly Stock :(

[Wikigod]

Hey guys im posting on here for a mate he has a R32 skyline and after changing the spark plugs its started coughing on boost when going about 5-7psi sometimes it even goes upto 10psi

Mods are

turbosmart dual boost controller

apexi bov

turbo back exhaust

pod filter

we have changed the vacuum lines

fuel filter

intercooler+piping

Sparkplugs

intake pipe

ive even tried my coilpacks in there

Whats the next step nothing has seemed to really help

Thanx for the help guyss

[Badgaz]

what are your spark plugs and what gap are they? also clean your coil packs with contact cleaner....they get quite dirty over time and the dirt/carbon allows the electricity to short up the coil pack to the closest grounding point. you can pull the silicon boots off your coils so you can clean them separately in warm soapy water. I did this on my original factory coils that i replaced with my split fires and they work fine again.

This is the video i used to figure out what to do.

spark plugs should be 0.7mm-0.8mm

try those two things and see if they help.

[Wikigod]

Cool man ill have to try that in the morning thanx for the quick reply

ill gap them and fix it all tomorrow any other suggestions i should do while im doing that?

Cheers

[Ben C34]

Assuming you replaced plugs woth the same type and gap I would suspect the coil pack loom

They get brittle and can stuff up after being disturbed. Seeing as your coils don't help it points more towards the loom.

[Badgaz]

Yeah true the looms get brittle, Also be sure the earth on your injector loom is fastened where it should be.

[Wikigod]

Thanx boys i will have to have a closer look tomorrow at that too

Thanx heaps

[KiwiRS4T]

Have you checked fuel pressure? Pump on the way out?