Requesting pics of creative ISC hose re-routing

born2drv

Banned
Nov 1, 2005
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Burbank, CA
I hate having a big rubber hose over the top of my engine going to the intake pipe and so I'm wondering how I can relocate this thing. Anyone have any suggestions? Post pics if you have any please!
 

malloynx

Member
Mar 30, 2005
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if you running the maftpro like me, just fit a small filter on the ISC. I got one from autozone for like 8$.. i'll post up a pic

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born2drv

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Nov 1, 2005
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Burbank, CA
they are bad for the valve covers i know because they (a) make an oily mess on top of your engine (b) vent your fumes to atmosphere (bad for environment) and (c) provide no vacuum source for the crank case ventilation.

However I'm justing using the filter for the ISC to suck in fresh air, not to evacuate fumes like the PCV.
 

born2drv

Banned
Nov 1, 2005
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Burbank, CA
So I put this filter on my ISC and man when I started the car it scared the shit out of me. Running a filter directly on the ISC creates the loudest sucking sound I've ever heard.... it sounds like a vacuum cleaning underneath my hood, I can't even put my head close enough to it to listen it's that loud.

Do you guys experience this same thing????
 

Reign_Maker

Has cheezberger
Aug 31, 2005
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Justin said:
No. The only reason its going all the way over there is for the AFM to meter the air it sucks in at idle.
THANK YOU! +1 for that info... I was looking at that the other day thinking what I could do to alleviate that stupid hose... Im glad to know it doesnt work off vacuum... Thanks man...
 

tookwik4u89

Red T-shirt
Apr 6, 2005
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Rockford, IL
I though I had an intake gasket leak when I first started it with the FFI, then realized it was the isc sucking air, DUH!....I have a little k&n on it, no problems.
 

tookwik4u89

Red T-shirt
Apr 6, 2005
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Rockford, IL
If you had a leak in the hose it wouldnt matter, other than its sucking unfiltered air, Its basically a controlled leak to control idle speed.
Edit...I'm thinking with our speed density, if leak was big enough and running afm, would cause lean.
 

hottscennessey

DONT BE A BITCH!
Jun 3, 2005
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Richmond, VA
starscream5000 said:
If you had a leak from that hose it would create a lean condition, correct? Or do I have that backwards?

There are different situations depending on hows its routed:

-But if you had a leak from that hose on the stock AFM it would cause a rich condition under boost with the hose in the stock location it would cause you to run lean under boost, becasue its letting in unmetered air.

-If it were going into a chargepipe like on my car (MAFT Blowthrough), and it were leaking it would cause a rich condition under boost because you'd be losing metered air.

-On maft pro, it wont do anything because its speed density, and the ISC valve is opened or closed due to whatever the ECU says, therefore the ECU is compensating for that air with fuel.