s14 idles like shit (well kinda like shit...)

[Southern Elegance]

I recently deleted my egr system and now my car idles like shit but drives perfect when above 1500 rpms.
Its throwing the idle air control valve sensor, crank position sensor and of course the egr sensor.
Drove fine before without any issues but unsure if it was throwing either of these codes.
I hear a slight whistling near injector three but its hard to tell exactly where its coming from, how should i go about trouble shooting this issue

[brizanden]

u kept the iacv right?

[Mitsubayati]

Did you make sure to cap off all of the vacuum lines you removed?

[fliprayzin240sx]

And leaned out the car with something? Shit will run rich on stock tune...

[blingbling]

It's probably an intake manifold gasket leak. Had same issue, took it to UMS and that's what they found. It was right between runner 2 and 3 and you could hear it hiss a bit. But this is just my two cents, use brake parts cleaner and spray where the runners meet the head and look for a leak.

[Southern Elegance]

it was a leak, this was on my friends car and he made the egr block off plate a little too big so it was having a insane vacuum leak. i heard a slight hissing but couldn't tell where it was coming from. problem fixed :)