R34 Conversion Help

[Raki_King]

Hey guys

Roughly a year ago I completed a motor conversion into my 4 door 34, which I also converted to manual. I used a neo 25det from a wgc34 stagea (automatic) Which runs beautifully....

My problem is up until a few weeks ago i was running straight of the actuator 5psi. I now bought an older style electronic boost controller and have upped it to 7psi which also runs mint. Now...the minute I go over 7psi i get the typical skyline 5000-6000 miss but in my endeavours to fix it I have come up empty handed...

I have done all the usual, New walbro fuel pump, gapped plugs to 0.8, running wasted spark kit, checked all lines for leaks etc...and I have also spent weeks looking over topics here and still have nothing,

I was wondering if you guys might shed some light on the situation.

Thanks in advance.

[KiwiRS4T]

Whether its the usual slight hesitation or severe R&R it can be fixed by getting a Nistune chip and a good tune. Wasted spark is not popluar these days - was there anything actually wrong with your coils?

[mystery_kid]

sounds like coil packs really...

[Raki_King]

Thanks for the replies guys, my mate has the exactally the same mods as me in his 34 and it runs perfectly with no missing at all.. I dont have coils due to the fact that I am running the wasted spark kit,

I am not hitting r and r and I am looking at possibly nistune in the future but an identical car with identical mods and mine missfiring, and his isnt leads me to believe that this is curable without nistune for now...

[KiwiRS4T]

Try insulating your coils and sticking them back in (or better still see if you can borrow a set of known good ones) to see if a set of splitfires will fix it.