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Old 01-17-2010, 09:21 AM
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I just got my new 4cyl. 97 wrangler the other day, its engine is completly stock and I wanted to know what would be the best and most affordable way to give it a little more juice?
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Old 01-17-2010, 10:04 AM   #2
Knows a couple things...

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I hate to be the one to tell you but there's not much you can do to that engine to help. Some engines with restrictive OE air intakes respond to free-breathing aftermarket intakes but the TJ's OE air intake is non-restrictive right from the factory so that won't help.

Our Jeep engines don't really respond to low-$$$ mods like some other engines do, I think I'd just keep it tuned up and drive it as is. Definitely do NOT install a K&N air filter if you offroad, K&N air filters have finally become well known for not being very good at keeping dirt out of the engine at all. I took mine off years ago, I'll never install another K&N air filter.

When you have a choice, buy American.
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Old 01-17-2010, 10:56 AM   #3
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I drive a 4 cyl just to keep me from speeding. It's been quite a few years since I had a speeding ticket. Need power? get something else.
Retired my 94 YJ 4cyl 5spd @ 200K
Now in a 04 TJ 4cyl 5spd CV @120K+
Both as a commuter vehicle in NW, NJ
April 2012.downsized and now a 99er.
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Old 01-17-2010, 11:51 AM   #4
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Jeep's inline engines seem to make their best torque & horsepower in low to mid range rpms, not higher rpms. Unfortunately, the stuff that's out there such as headers, cold air/free flowing intakes, etc only benefit higher rpm operation. I agree with Jerry, keep your money and enjoy your Jeep for what it is.
Doug Coleman

2000 Wrangler Sport - "Red" - Stock
1999 Z-28 - "The GLUMAKR" - Not Stock

"Mid-life crisis? Pfffffttt... more like a whole-life crisis."
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Old 01-17-2010, 12:29 PM   #5
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X234 on everything said already
If your jeep is stock save your money
on trying to pep it up and look
at bumpers/winch/bb/rims/tires
There are lots of stuff to spend money on

"locked and loaded"
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