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Think I may have found my gremlin. Was testing fuel pressure again and had 50psi at idle, pulled vac line for reg and fuel pressure didn't change. Just ordered a nismo reg and will fit that when it gets here. This would explain why it's been so rich and fouling plugs.

I currently have the same problem with mine. Was fine on dyno this morning then on the way home developed a miss fire at 4500rpm. Gappef plugs down from .7 to .5 only lowered the miss in the rpm down to 3500. Made it worse. Going to change the plugs tomorrow. And set to .55mm.

Mine where all burning good. Tuner said hose must of fell off somewhere. Boost leak. Couldn't find any off so new set of plugs first the change fuel filter and check out the height of fuel pump in tank. After that. I'm at a loss so it will be going back to tuner if I don't find the problem

Mine where all burning good. Tuner said hose must of fell off somewhere. Boost leak. Couldn't find any off so new set of plugs first the change fuel filter and check out the height of fuel pump in tank. After that. I'm at a loss so it will be going back to tuner if I don't find the problem

Found my problem this arvo. Changed plugs didn't do anything. Pulled fuel filter out. (Aeroflow reusable one ) stainless steel screen was blocked. Changed it from 80m to 30 m took for a run and was fine. Will pull the tank on the weekend and clean it out.

Pretty sure duty cycle shouldn't be that high on 550cc squirters and 18psi on a Td06 only making 240rwkw.

Looks like the new fuel pump is required anyway

post-55653-14392828983823_thumb.jpg

Edited by fmlycar

Nah that's way too high. 550cc should be good for over 300kw on pump. Before I was having issues I would see values around 67% even with spikes of 2-3 psi in boost. Will fit new bosch pump when it arrives and report back.

Edited by fmlycar

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