Misfire When Wot After Changing Gears

[ima_slap_joO]

Hey guys, I've had this issue for a while now where once I change gears from revving it out, the car will .....miss fire for 1 or 2 seconds before it starts pulling again, this is at WOT, with less throttle I don't have the issue. I have just changed the coil packs out, changed plugs .8 gap. I have also recently adjusted the TPS as it must have been

knocked or something, I adjusted to .48 on reds, car seems to behave according to where my foot is on the throttle, where when the TPS was out it was erratic, I have also changed the TPS. It can also happen when say....cruising in second at 2k rpm, then flooring it WOT, it will miss for a second...then catch on and off it goes. Once

it has miss fired in that gear, it will pull to redline, but once I change gear it will happen again, any ideas? I have checked for vacuum leaks, rectified some as now the car does not create positive boost in neutral where it was before replacing suspect hoses.

I have stock airbox with k&n panel filter, 3.5" from turbo, stock boost (12 psi) stock BOV and front mount. Plugs have been changed to copper@ about .7 or.8 from iridium @.7 or .8

Let me know what you think it could possibly be.

Please note....it isn't one cylinder misfiring, its all of them, for around a second or so.

Thanks guys.

[reeceo21]

i believe they are 10 psi but dont quote me

[ima_slap_joO]

Well with the exhaust and panel filter it will run no less than 12 psi.

[blind_elk]

You don't appear to be making mega horsepower - open the plug gaps out to maybe 1mm and see what happens.

[ima_slap_joO]

Hey mate, umm yeah thats the thing, the standard 1.1 will misfire as soon as full boost comes on, thats the only reason I have them gapped so low, with them at this gap there is no misfire on full boost.

[blind_elk]

Then maybe change your driving style a bit. Instead of simply flooring it, feed the power (watch the in-car shots of V8 super taxi drivers when they show the feet movements). When you floor it, the ECU dumps a heap of fuel in, temporarily flooding the engine.

[ima_slap_joO]

I can avoid it happening by sitting at partial throttle for a bit, but I am trying to diagnose the problem, I have never been in another skyline which has done it.