i have another one of my unusual problems...
i've felt like since i adjusted my intake i had 'too little restriction'...

i have a very big 60mm intake and throttle body and a very short intake with a cone filter...

seemed like i had too little air flow at low rpm's so i made a cone restrictor to jam in the intake, initally the opening was too small, so I enlarged it to about 45 -50 mm, and made a few other adjustments and throttle response feels better...

anyone ever had too big of an intake cause problems?

Yes, Nissan engineers ran into a problem with intake flow. So they extended the throttle bore down to the bottom of the plenum (using an aluminum tube). It helps with low speed off-idle performance.

seems like adding restriction helped... might need to open it up a bit, but it was noticeably more responsive.

yeeah having a proper air filter and intake in front of the throttle body would work too...

the throttlebody is off a ga16de, so it flows way more than the old a15, but what made it really bad was when i switched to silicone hose for the 90deg bend instead of hard abs plastic, the silicone was about 15% larger inside and that's when things started to run badly.

arent you on lpg?
probably getting more signal to mixer with more vaccum

yes. exactly what i was thinking.