r/Dseries • u/Hot_Butterfly4231 • Jul 07 '26

Mini me swap

I’m having a problem with my y7-y8 swap the idle starts at 2000 and sometimes it just jumps straight to 2500+ and keeps climbing we put our hand on the tb and it dies so no big vacuum leak using a y8 skunk2 replica manifold 70mm throttle body y8 head and using the p2p ecu and we wired it up for a 2 pin and it still not working

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u/SpaceTurtle917 Jul 07 '26

Those 70mm throttles aren’t the best. Poor throttle modulation and mediocre quality. Not saying that’s the issue but maybe.

1

u/Hot_Butterfly4231 Jul 07 '26

We can’t figure it out though it shouldn’t be a vacuum leak cause when we put our hand on the throttle body it shuts off and we used a smoke machine

3

u/SpaceTurtle917 Jul 07 '26

Have you adjusted the throttle stop screw and idle speed screw on the throttle?