Topic: easy engine upgrades

[Sparky Watts]

We're getting closer to an answer Sparky...  We're getting closer...

Yup....I can feel the hair on the back of my neck standing up!

[Jeffy]

We're getting closer to an answer Sparky...  We're getting closer...

Yup....I can feel the hair on the back of my neck standing up!

Geez, you lazy bums are going to make me open up my FSM and look it up aren't you?

On a side note, I lost all my YJ FSM scans so I'm going to have to do it all over again.  I think this time I'm cutting my book apart then scanning each page.  :cry:

[SMC4WD]

Geez, you lazy bums are going to make me open up my FSM and look it up aren't you?

LOL  Now he's just teasing us....   :P  

Based on that photo, the IAPS is on the manifold.  So if this topic title is correct (even on a TJ), how is that a simple mod? not only how do you move it to the air filter box, what do you do with the hole left in it's place?

[Sparky Watts]

Geez, you lazy bums are going to make me open up my FSM and look it up aren't you?

LOL  Now he's just teasing us....   :P

I think you're right!
   

what do you do with the hole left in it's place?

Duct tape?  Chewing gum?  Get that little boy from Holland to stick his finger in it?

I'm a patient man, Jeffy...take your time.   I'll expect an answer by 6pm CST.
 :twisted:

[SMC4WD]

Get that little boy from Holland to stick his finger in it?

hehehe...  he said 'dike'...

[Jeffy]

Ok, you can stop playing circle jerk.

I did some work on my Jeep and snapped a picture of the intake manifold.  The IATS is in the picture.

[SMC4WD]

Ok Jeffy...  Besides the Bevis & Butthead jokes...  You Rule!!

Now let's discuss it's usage, or better yet, it's movage.

It was mentioned to move it into the airbox (correct?).  I have personally popped all the rivets out of the side of the factory box, opening up most of that inside part.  I have also pulled out those two reducers that go into the airbox and into the throttle body.  Aside from that, the airbox is there, and intact (K&N air filter).

So assuming that we pull that part off of the manifold, and bung the hole.  Drill out the airbox and screw it in there??

Where?  On the tube to the throttle body?  On the top or lid of the airbox??  Inside the airbox, pre-air filter?

An expensive way to do this could be to buy another sensor and leave that one right where it is.  This will eliminate having to buy a bung, screwing around in that area and perhaps causing leakage.  Then with your brand spanking new one, screw that into the airbox area stated early, unplugging the wires from the one, and plugging it into the wires from the other.

Worst case scenario is that if it doesn't work, you could always unplug your modification, and re-plug it back into the original.

Please note that the main question here is...  where do you relocate it to?

[Jeffy]

You would still need to cut and splice the plug to reach the airbox.  You'd probably want to move it to the lid of the airbox.

One thing to consider when removing stuff and cutting holes on other things is that the MAP reads pressure.  By removing the ventury, you increase the CFM but you reduce the pressure.  This throws off the MAP and the PCM ends up leaning out the Fuel mixture.  It also changes the vacuum for the booster.

Found this out after I went back to the stock box for emisisons.  Low-end torque picked up and the brakes firmed up too.

[SMC4WD]

This one I'm going to have to get back to you on...


Whooossshhh, that was the sound of the verturi, brakes and whatnot going over my head.   :roll:

[SMC4WD]

Ok...  I've learned through websites on how to cut the vent tube on a gas filler to create a larger tank.  I've worked in the four-wheel drive industry for many, many years learning about the coolest upgrades out there.  

I've bought, and had been given different forms of modifications and upgrades.  I've tried (financially) to build it and fix it as economically as possible.  

Opening up the air box was another one of those freebie upgrades that I’ve learned through boards…

This brings me to this topic…   And a simple straight forward question.  Is it worth doing?  The link in my siggy shows all the upgrades I’ve done.  Will this add more?

The 1994 model has a computer that cannot be upgraded.  I’ve contacted JET and they’ve tried for me.  OB1, or something like that won’t hold their codes and it keeps putting itself back to normal.  

Without all the technical lingo, Is it worth doing?

[canadian_woody]

WHY WOULD I WANT TO DO THIS?

does it increase the capacitance of my blinker fluid?

So all of you are just itching to do this, without even knowing what purpose it does? :shock:  :shock:  :shock:  :shock:

[SMC4WD]

WHY WOULD I WANT TO DO THIS?

does it increase the capacitance of my blinker fluid?

So all of you are just itching to do this, without even knowing what purpose it does? :shock:  :shock:  :shock:  :shock:

I could only answer for myself.   Every teeny little bit helps.  Enough teeny little bits added up, and you got alot.  

Plus, I'm cheap.  A free, or really inexpensive upgrade, that could be benifitial is a good thing.

You asked, "Why we would do this?  
Well I asked "Is it worth doing?"

[Jeffy]

The idea is to move the IATS away from the manifold.  Cooler air would be more dense and the PCM would theoretically add a bit more fuel.

The other theory is that the IATS should be reading measurements on the incoming air and not pick up heat from the intake manifold which is right on top if the exhaust manifold.  If it's not tuned to work with the engine heat, it could be forcing the engine to run leaner then it should be.

[Dont Know Squat]

ok i am still confused....i dont have a "air box" anymore due to installing a FIPK2 style intake so far so good but should i move what sensor??

[Sparky Watts]

ok i am still confused....i dont have a "air box" anymore due to installing a FIPK2 style intake so far so good but should i move what sensor??

Perhaps it could be moved to either the filter itself, or if you have one of those "heat shield boxes" around the filter, you could put it there.....