im re-doing the supercharger setup right on my sohc KA, yes im doing a full rebuild, arp's and all that. not the point. im having a flange made to run the S/C directly on the lower intake manifold, therefor i have no way of running any of the sensors on the upper intake manifold. theres the iacv on the back of the upper intake but there are 2 more sensors that im not sure of. is it possible to completely bypass these?

thanks.

 

the iacv and the aac are one part, you need them, you dont need the air regulator(its more of in the middle under the pvc valve) its more for cold starting. then on the bottom under the throttle body theres a little black solenoid for the egr, you dont need that either

are there any of the emissions?

 

all emissions are gone. i was told i can bypass the iacv and just adjust idle with the throttle body?

 

keep the IACV, ditch everything else.

relocate the IACV to a different location, drill, tap, file, and boo ya.

 

You can bypass it if you like...In my opinion I would try to keep idle control if possible. It really depends on how "nice" you like your cars...with no idle control the idle will change a tad based on the weather...when you let off the gas at high rpm, it might not catch itself and bog a little when settling to an idle etc...

 

good info guys, im sure i can find a spot one on the lower intake or integrate one into my supercharger adapter.

 

This(Other than bypassing), w/out a tune like he says it may bog or even stall when letting off gas. You would prolly hate driving it w/out IACV.

Also just curious, what sc are you using?

 

I've test driven a car with no IACV. had no p/s or a/c or anyof that jazz. It won't die, but it would come close to it. Made it a little bit of a pain to drive.
Good thing I didn't buy it. The engine ended up dieing because of oil starvation issues in a few months.
Seems like it was a pretty popular thing for kids to do for a while, and their engines all died within a few months.
general consensus amongst those kids "KA's suck and they blow up all of the time"
consensus amongst those that think things through, The oil pressure drops too low when the rpms fall too far below idle. Since the engine would almost stall before recovering, the bearings would wearout from lack of oil. Who knows the amount of wear at the cams considering it takes a considerable amount of pressure to get the oil to, and through the head to begin with. So that extra metal flakes in the oil just sped the process of killing the engine.

So, either find a nifty spot for the IACV or, set the idle considerably high so that when it does drop, it isn't dropping below 500rpms

 

If youre keeping the ivac I would check out the Supercharged section of the KA-T.org forums. You can do this one of two ways. One is to make provisions in your mounting plate (holes or a cut out) so it will mount much like it does to the stock intake manifold now. The other is to find a spot to mount your ivac and run vacuum lines to it. I've seen SC applications that have done both these and worked well.

I agree that it would be worth your wild to keep it...save you motor in the long run.

 

Good theory but I dont know how much that will hurt a motor. The oil pressure wont instantly bleed off if the motor stumbles. And if .5 seconds of not running >750rpm would starve the bearings, we'd be draining metal out of the pan every oil change just due to starting the motor. They probably just dont know what theyre doing and beat on the cars as well.

I drive my DSM daily for 6 years with no idle control. The only thing that really gets me is when the car is cold and I pull up to a stop sign, one out of 10 times it will die out.