I just got MBC, Cams and Tune.

My car's idle goes down whenever I push in the clutch when slowing down.
If I have the a/c on, the symptom increases and stalls the car.

I even switched to stock BOV hoping that would solve the problem, but nothing.

I checked all the hoses but they seemed okay.
Do I have a leak somewhere?

Please help... I tried some searching but nobody had the same symptom as I have.

 

BTW this only happens when it's hot outside. Above 75.

 

I don't know if this helps.. but i had the same problem when I was bone-stock..

When I got tuned... there is an area in EcuFlash where you can up the idle speed when the AC is on... I had my tuner play with those to try it out. It seemed to have helped.

My problem was intermittent... and seemed to get better after that...

 

there is an idle adjustment screw on the top of the trottle body.

you can turn it counterclock wise to speed up the idle

 

I tried raising the idle with ecuflash. I raised it up to 1200 with a/c on and 1000 without. Although it made the car stall less, it didn't make the problem go away. Car still stalls on a hot condition with a/c max.

 

The problem is... It still happens when the a/c is NOT on. Just not as bad to stall the car. And i tried raising it to 1200(idle with a/c) which is very abnormal and it still stalled. (Although it helped)

I don't know if I should raise the idle even more.

 

did you get a tune for your cam shafts yet? i have a New HKS EIDS for sale for $100 shipped if you wanna buy it. that'll help the idle issues.

 

I would not adjust the idle screw unless you know exactly what you are doing. Cams lower your vacuum at idle which makes your idle very lopey. You need to get a tune and it will idle very close to stock with cams. I have 272s and it idles fairly well. It still stumbles when ever you come to a stop and push in the clutch and hit the brakes.

 

Yeah I got a tune after the cam install and it idles VERY well.
But the car still shouldn't stall whenever i push in the clutch and brake to slow down.
It doesn't even have to be a complete stop.
I almost got in an accident while slowing down for a corner. The car stalled while I was making the turn. With power steering gone, I almost ran straight into another car.