4.0 with a jet chip / K&N filter - JeepForum.com

 
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post #1 of 4 Old 06-19-2009, 01:12 PM Thread Starter
DonziJeep
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2000 TJ Wrangler 
 
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Location: Connecticut
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4.0 with a jet chip / K&N filter

I recently sold my 98 TJ which had a 2.5 and a 5sp and bought a 2000 TJ with a 4.0 and an automatic. I was wondering what minor mods worked well on the 4.0? Is a jet chip and K&N worth it?

Thanks,

Don

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post #2 of 4 Old 06-19-2009, 01:20 PM
MiSSiNGAFeW
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2004 TJ Wrangler 
 
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I just bought the K&N filter that fit the stock filter housing, i have noticed better gpm and response. No point in me spending 300+ on a CAI right now. As far as the chip, it depends. I don't have one but i have seen threads where they work and where they don't so it's up to you. I'm pretty sure they change the power band so you will lose torque which is what a jeep is good for.

2004 Wrangler X, 31" tires and new bumper. More planned for after I move cross country.
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post #3 of 4 Old 06-21-2009, 12:20 AM
Reelm n Rubi
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Chips suck! Been there.

2003 Lt. Khaki Rubicon automatic
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post #4 of 4 Old 06-23-2009, 05:27 PM
mecompco
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Gears and/or cubic inches are the answer--bolt ons might net you a bit of throttle response or a ft. lb. or two of USABLE torque at best. Most all claims of HP gain are at the top end of RPMs.

'94 Cherokee Country
Engine: 4.0 HO, Sealed canister filter, 3 core CSF steel radiator, CatCo cat, Dynomax Turbo Flow muffler.
Electronics: Remote start/locks, Pioneer DEH-P7800MP w/XM, Polk Audio speakers, Garmin Nuvi 660 GPS, Cobra 148 GTL P&T w/Wilson 1000.
Suspension: Old Man Emu 3" lift+OME AAL, JKS adjustable trackbar, QDs, LCAs UCAs, A.C.O.S., DPG Offroad adjustable bumpstop plate, Daystar poly bumpstops.
Steering: Currie HD steering, C-ROK steering box reinforcement, OME stabilizer.
Armor/Recovery: T&T Custom belly skid, Mopar gas tank skid, JKS LCA mini skids, Rock Lizard Super Skink Sliders, Mopar 2" receiver, ARB Bull Bar/Ramsey REP 8.5 winch.
Drive train: D30 front axle w/Superior Chromo D30 axles & outter seals, D/S 4.56 R&P, ARB locker, Ruff Stuff cover. Ford 8.8 rear axle w/Superior Super 88 kit, Ford Motor Sports 4.56 R&P, ARB locker, SOLID cover, Russell stainless lines. Front and rear Tom Woods HD drive shafts, 242 x-fer case w/Tom Woods SYE.
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Awaiting installation: Autometer A pillar gauge pod, oil, water, & tranny temp guages, PIAA driving lights, Goferit tie-rod flip bushing, '95 Brake booster and M/C, M.O.R.E. Motor mounts, TnT Custom 1.5" Shackle.
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