Needing Some Help!

[se4njb7]

Got a rev 3 turbo and fitted a new greddy profec oled boost controller, bosch 044 fuel pump, new ignition leads and disconnected the tvsv. So whenever I set boost to 13+psi and I go full throttle in lower gears the car jerks a couple times between 3-6k rpm. This however doesnt happen in 5th gear but sometimes it can do it occasionally. No idea what is causing this, has anyone have any ideas?

Cheers

[LukeSi]

Sounds like a misfire, checked the plugs, leads etc?

[strawman]

blocked air filter?

[Nic]

What spark plugs are fitted? you'll need a cooler grade of plug if you up the boost pressure.

[se4njb7]

Got ngk 7's in and new leads. I have a new s2000 induction filter on too. Any other ideas?

[se4njb7]

would a dodgy map sensor cause it? i dont get any eml lights and no codes are stored also

[se4njb7]

Swapped map sensors but still no change. Swapped coolant sensor, no change. Can someone help me before I go to get the car dynod?

[se4njb7]

Guessing no one has ever had this? Next thing I am going to replace is the dizzy cap and rotor arm. Then possibly the knock sensor.

[2mad]

How did you fit the fuel pump .. How was it wired up .

[se4njb7]

swirl pot, relays etc... managed to sort the problem, turns out it was a dodgy ignition coil.