Im about to put a cai on my jeep. Whats the best way to eliminate the vacuum hose that goes to my stock air box so I dont have a vacuum leak? I have the renix 4.0

 

If it's the one that goes to the valve on the front of the air box don't worry about it, you won't have any issues. The other small line I can't remember off hand. The big one goes to the charcoal canister, the kit will have a way for that to attach.

 

So having it just laying there wont affect my Idle any and its a cai my buddy gave me but it does have a port on it I assume is for that. Also gonna relocate the IAT. What should I use to plug the hole where the IAT was? Maybe another IAT from the scrap yard would work.

 

That or a bolt cut flush and wrapped in teflon tape.

 

I'm sure it's a common thread, may well be a pipe thread that will take a plug from a hardware store. I suppose I'd just go in with the IAT to match the thread.

You can pick up a cittle cap at an auto parts store for where the little vacuum line (off that "block"), came iff that goes to the thermal switch for the heated air intake on your air box.

I hope the kit has something to rout the front CCV tube to it. Might be one of those little filters will clog up inside where you can't see it, then it will look like your rear main is shot when the crankcase pressure goes up.

 

Cool and hell I just have a 90* elbow in the spot where the ccv should be lol.

 

Slim, I was looking to see if I could PM you a photo. (I can't). Also your box is full so nothing could go anyway!

 

Deleted some pms sorry didnt realize it was full man

 

1/4 " NPT plug.

I don't like the idea of eliminating that tube from the front of the valve cover. It can affect idle and also is instrumental in removing moisture from the crankcase.

 

Hmm didnt know that Iv been running it like that for 2yrs since it was like that when I bought it

 

Got it installed today just gotta move the IAT when I get the time



My redneck fix for plugging the vac line. Used a service port off of a Trane A/C unit and put a new scrader valve in it. Works like a charm

 

Now it's gettn confusing. The tiny little tube that went the the thermal switch on your old air box, just needs capped off. (same tubing as on the EGR solonoid).

It looks like it has a deal to accept the front CCV vent. (Important), as well as the canister vent. THEN, from that other deal vac. is provided for the CCV valve on the REAR of the valve cover. You want that. Far from "harmless", Positive Crankcase Ventilation is a very good thing. Also it's designed for that little 2.6mm? "vac leak" at the CCV orifice.

Also you need vacuum to the FPR. Looks good! So a 1/4 in. pipe thread plug will plug the old IAT hole...good to know.

 

Lol you just confused me haha

 

The waters have been muddied..........

 

HaHa! I want to make sure you have vac to the Rear CCV and the FPR, have capped the tube that went to the thermal switch in the old air-box, and that the front vent on the VC is free to vent. Stuff that I figure matters.....