Having an annoying problem with my 93 Integra. I installed supertech valvesprings and retainers, a catch can setup (using the 2 ports at the back of the block), and a new battery this weekend. When I start it, it will run fine cold but then once it warms up (approx 1/4 into the normal), it just dies. I watch the wideband and don't see it getting oddly rich.. unfortunately my datalogging cable isn't working so I can't tell what any of the engine parameters are when it happens.

At first I thought I had the valve lash too tight so I redid it this morning on the high end of the specs. The engine is a B20 with a pair of rather large cams that are of unknown origin. The previous owner claimed them to be Exospeed LS Race cams but I have yet to verify that. Obviously I had the timing belt off but that all lines up perfectly, I've triple checked that.

The car is turboed and the engine management is Crome. I've been driving this setup for months without problems until this weekend.

I'm stumped..

 

A few more things I've found... the car will idle if I give it a vac leak. but if I go through the motions of setting the idle, it will die when the iacv is unplugged. So I can't set idle properly.

 

What does the motor idle at?

Try backing out the idle screw in the TB some.

 

The screw is backed out as far as I can without it falling out or leaking around it

 

The car running when it has a vac leak = me screwing something up........ but what?