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Hypothetically speaking if you were to remove the cat and bypass it what would the gain/loss be? (gas mileage, hp . . .) I know backpressure can be important but how much is it a factor on the 98 TJ 4.0L engine? Other than a banks header the exhaust system is stock. I am not looking for any...

BS, Hey, your not kidding there is no help, I have posted this question in a few forums with no help. The modulator as I understand it controls the shifting on an auto tranny and is often externally mounted and vacume operated. I should be back in late February if all goes well. Hawaii is...

I should have said they think it is the modulator. Does anyone have any idea of what part this could be? On most auto tranys is called the modulator and is an easy swap. Any ideas would be great. In any rate it will likely wait for the next 9 months as I am going to Afghanistan this weekend.

I had someone look at the Jeep. They dont think it is the modulator. It seems to be skiping second gear and going from first to third (stays in 2nd for a second or two). Looked in the service manual and could not find the modulator, what else could it be or does christler refer to it as...

So my tranny is slipping in, I think, in 2nd and 3rd gears. In any rate at around 15mph and 50mph. Fluid level is full. What is the liklyhood I am going to be learning to rebuild a auto tranny?

Looks good, back when I lived in Zambia there would be local kids (9-12 years old) that would post themselves by potholes (these are African potholes) and do exactly this, for a small price.

Well I pulled the diff cover to check the oil and it was clean. There was a thin coating of metal on the plug magnet but that was it. If I wasn’t having this issue I would have been comfortable reusing the oil. The oil looked very clean! Yes the backlash was correct; it was checked and...

I recently installed an ARB in my Dana 30. After one week ( about 200 road miles)I pulled the diff to check the oil and noticed their metal flakes in the oil and a lot of metal particles on the magnetic plug. I used "royal purple" and the diff cassing was throughly cleaned when installed. The...

I can't speak to changing the entire exhaust system, but I recently installed a Banks Header on my Jeep (left the rest of the exhaust stock 'cause it wasn't broke). It went in easy and has increased my gas mileage by a little over 1 MPG.

The Gooseneck I was refering to is the one on the intake box not the one in the gas tank. (is will try the gas tank one when I change the filter) I pulled out the "intake gooseneck" and the hole is a lot bigger, not sure how much this will help but I will post if there is any increase.

After installing the header and cleaning the fuel injectors, I have seen quite an improvement already, (the injectors were nasty). Using Blacksheeps (1.14) I am currently getting close to 16 MPG :) . I have also heard that removing the gooseneck from the intake will increase the MPG slightly...

TT, I guess since I installed the Air Comp a few years ago and the lockers are also going in separately I have inadvertently stumbled onto this exact setup. :D Thanks for the info

I just used the supplied ARB wiring diagram for one locker x 2. Each locker will be an isolated circuit so they will operate independently. I have the switches and air installed/ leak checked, but havent had time to install the lockers yet. Hopefully this weekend!

Thanks for the info. I installed the banks this weekend and will see how that does, then I will start with changing the airfilter and go on from there. Does anyone know how far off I can expect my milage to be. Like I said I have a 98 Sahara with 33x21.5x15 MTR's and 3.73 gears (stock). The...

No worries, I was just looking for a scape goat anyway.

Well I hooked it up, Just decided to ground to the lower arm of the "T" and it works, found out on another forum it dosent matter which way you set it up. With no current it is closed and no air passes, with current it is open and allows air to flow to the locker.

Still no replies :ugh: Anyway I guess I have a 50/50 shot if the polarity does matter. I'll let you know how it turns out.

I used to get about 15 in my 98 with 3.73 gears and 33 MTR's. Recently I noticed it has gone down quite a bit. Would the crack I have going halfway through my exhaust manifold cause this? I am replacing it with a Banks this weekend and hope to see some improvement.

ARB Air Lockers, Solenoid Wiring ? I am in the middle of installing an ARB and have a question about the polarity of the wires for the solenoid. I am not using the ARB wire loom so the QD T Plug that is on the solenoid doesn’t help. Both of the leads on the solenoid are black. Which one...

5 1/4 in the Dash I mounted 5 1/4 speakers in the dash and it makes a huge difference. If you go on ebay you can buy (or make) brackets that will mount the 5 1/4 in same location of the current useless 4x6 speakers. You have to cut a little metal but it is worth it. The plates sell for...