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Old 08-27-2010, 01:14 PM   #1
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performance upgrades!

I own a 1997 jeep wrangler and I'm wanting to do some performance modifications to it. From what i can tell the engine is all stock. Although i think there is a aftermarket air filter. The problem is the jeep has an on board air compressor on it so the filter isn't where its supposed to be. The filter looks aftermarket but I'm not for sure. What things can i do to my jeep to increase mpg hp and torque? Thanks

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Old 08-27-2010, 01:18 PM   #2
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Nothing will make a significant difference to MPG, HP or torque. The only thing you can do to gain some power back is to regear if you have larger than stock tires.

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Old 08-27-2010, 01:59 PM   #3
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Try a stage 4 weight reduction kit with carbon fiber body panels, and jack up the engine with a twin turbocharger and twin supercharger, replace your frame with an aluminum one, install dual canisters of 200 wet shot nitrous, a dual titanium exhaust and full slicks front and back. Also be sure to add lots of manufacturers stickers. I have heard some companies can give you up to 50 hp!!!
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Old 08-27-2010, 02:16 PM   #4
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Take off the radiator cap and drive a vette under it and reattach cap. It's a Jeep!
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Old 08-27-2010, 02:16 PM   #5
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Try a stage 4 weight reduction kit with carbon fiber body panels, and jack up the engine with a twin turbocharger and twin supercharger, replace your frame with an aluminum one, install dual canisters of 200 wet shot nitrous, a dual titanium exhaust and full slicks front and back. Also be sure to add lots of manufacturers stickers. I have heard some companies can give you up to 50 hp!!!
Where can I get the carbon fiber body panels.
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Old 08-27-2010, 02:19 PM   #6
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An AiRaid or K & N air intake system with a throttlebody riser will give you a little more power and some mpg gains...but you need a fine calculator to really measure the difference. 10% mpg gain when you only get 15 to begin with is only 16.5 mpg. But I run the Airaid on my 03 rubicon with the throttlebody and it made a good difference going up steep hills, more power, little better gas mileage.
Only other thing you can do is have a tow hook-and hook onto someone in front of you and shut the engine off...LOL....a jeep is a jeep is a gashog....
SuperChip did a LOT more good on mine but I don't know if you can get one for your year.
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Old 08-27-2010, 02:38 PM   #7
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Try a stage 4 weight reduction kit with carbon fiber body panels, and jack up the engine with a twin turbocharger and twin supercharger, replace your frame with an aluminum one, install dual canisters of 200 wet shot nitrous, a dual titanium exhaust and full slicks front and back. Also be sure to add lots of manufacturers stickers. I have heard some companies can give you up to 50 hp!!!
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Old 08-27-2010, 02:40 PM   #8
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And the NOS fuel supplement
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Old 08-27-2010, 02:44 PM   #9
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ABSOLUTE best thing you can do for preformance is add an ingalls torque dampener according to some member with one post a few days back it did wonders for him





yes Im joking
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Old 08-27-2010, 03:17 PM   #10
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ABSOLUTE best thing you can do for preformance is add an ingalls torque dampener according to some member with one post a few days back it did wonders for him





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HAHA

If he worked in Ohio he'd probably work in a jeep factory too
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Old 08-27-2010, 04:21 PM   #11
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You guys are getting rough.
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Old 08-27-2010, 04:31 PM   #12
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OK, if nobody else is going to say it, then I will. There is really nothing out there to help performance worth a hill of beans, in spite of various claims from aftermarket suppliers. Folks who supercharge, I've seen posts where they're sorry they did. Stroking the engine seems like a viable best first thing to do, then an engine swap. Most soon realize the stock engine is very good for almost all circumstances offroad. On the highway, live with it and make sure your axle gears are correct for your tire size. That about cover it?
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Old 08-27-2010, 04:33 PM   #13
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Sorry, Cons, just realized that's exactly what you said in #2.
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Old 08-27-2010, 04:33 PM   #14
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OK, if nobody else is going to say it, then I will. There is really nothing out there to help performance worth a hill of beans, in spite of various claims from aftermarket suppliers. Folks who supercharge, I've seen posts where they're sorry they did. Stroking the engine seems like a viable best first thing to do, then an engine swap. Most soon realize the stock engine is very good for almost all circumstances offroad. On the highway, live with it and make sure your axle gears are correct for your tire size. That about cover it?
I said that gearing is all that will really make a difference (besides motor swaps) in the second post of this thread.
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Old 08-27-2010, 04:34 PM   #15
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Sorry, Cons, just realized that's exactly what you said in #2.
No worries
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Old 08-27-2010, 04:44 PM   #16
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Regear, all else is wasted money.
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Old 08-27-2010, 05:01 PM   #17
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Alright thanks i have 35s and I'm runnin 4.56 gears. This is about the best it gets?
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Old 08-27-2010, 05:05 PM   #18
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Alright thanks i have 35s and I'm runnin 4.56 gears. This is about the best it gets?
What size motor and transmission?
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Old 08-27-2010, 09:09 PM   #19
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4.0L 6cyl. automatic
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Old 08-27-2010, 09:20 PM   #20
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4.0L 6cyl. automatic
Your axle ratio is very optimal as it is for your engine/transmission/tire size combination. Your TJ does not need to have its axle ratios changed. In fact, I would not.

So really, short of installing a supercharger, there are no easy upgrades you can do to noticeably boost up your engine's performance. Not a throttle body spacer, not an aftermarket air intake, not a computer chip.

I would instead focus on how awesomely your Jeep is set up for offroading and not racing. Your engine/tire size/axle ratio/automatic transmission makes it, really... no kidding, an offroad beast. A Jeep is never the right vehicle to think of as a street racer but it sure is good at what it was designed to do... be a very cool offroad 4x4 vehicle.
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Old 08-27-2010, 09:23 PM   #21
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Can I remove the catalytic converter I see there is a O sensor after it so I suppose it will kick a code but maybe there is a fix or will removing the converter do nothing to help. Also I have a aftermarket header and thought of replacing the entire exhaust besides the header.
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Old 08-28-2010, 06:20 PM   #22
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You don't need a cat there in Kansas?
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Old 08-28-2010, 06:24 PM   #23
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Can I remove the catalytic converter I see there is a O sensor after it so I suppose it will kick a code but maybe there is a fix or will removing the converter do nothing to help. Also I have a aftermarket header and thought of replacing the entire exhaust besides the header.
Removing the cat isn't going to help, I would stop worry about it. If your Jeep doesn't have enough power for you and you can't live with it simply being a great offroad vehicle, you can install a supercharger or V8 into it, or sell the Jeep and buy a Mustang or similar.
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Old 08-29-2010, 10:51 AM   #24
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You don't need a cat there in Kansas?
You don't even need a driver's license in Kansas!! Just kidding, but the rules here are VERY relaxed, and there's NO emmissions laws that are enforced in Kansas. You can do just about anything here.....it's still the wild (mid)west!
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Old 08-29-2010, 10:54 AM   #25
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You don't even need a driver's license in Kansas!! Just kidding, but the rules here are VERY relaxed, and there's NO emmissions laws that are enforced in Kansas. You can do just about anything here.....it's still the wild (mid)west!
Marshal Dillon kept a tight rein on Dodge City but that's about it.
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Old 08-29-2010, 11:09 AM   #26
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Marshal Dillon kept a tight rein on Dodge City but that's about it.
I heard Chester took over and even Dodge went down the tubes.

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