SpecR Misfire

[AdamB]

No end of troubles with coilpacks, bought brand new set, fitted and all was well. Now developed misfire/hesitation at about 3500rpm at full throttle. Part throttles fine.?
cheers

[laze]

Plugs?

[Jonny Mac]

boost leak?

[AdamB]

Pulled plugs but in good condition although a little black. Overfuelling -boost leak agreed.
To try and describe it better its an almost strangled/ clogging effect lift off and it clears, foot down again and same happens.
Its a far more severe leak than I`ve had before if thats the problem. Will check all pipework later. Cheers

[AdamB]

Slight split in Fuel pressure to inlet manifold hose, changed.
Cleaned MAF sensor.
Still the same.
Rear silencer box on exhaust is badly damaged, could a iffy/damaged baffle cause a similar problem?
Still running standard boost control solenoid, again, do these cause similar issues?
Thanks

[crouchy]

Are you still running the standard intercooler? it could be cracked like on the s14's?

[AdamB]

Sorry should of said, no a front mount. Had a S14 for years myself, checked all common issues but its a new one on me.
Anyone know how timing behaves at this RPM? (I`m just picking faults out of the air now!)

[jib136]

sounds like a ignition problem as said on s15oc, check the coilpack harness dude