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The Original 3/8" Ruffstuff Diff Cover!Ruffstuff Axle Simple Swap Kit!The Ruffstuff NOT Universal 4 Link Kit!

Unread 03-02-2003, 03:42 PM   #1
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Join Date: Dec 2002
Posts: 172
4.0 Performance Chip

Hey guys i got a question.

Ive seen Jet chips and venom 400 performance chips advertised on tv and in magazines. Does anyone have one of these installed in their 4.0? And if so does it work? Likes dislikes? MPG. Let me know, I need a little more uumph out of my 4.0. (I dont want to change the gears because i got the lovely automatic and i need to travel on the highway without running at 3500 rpm.)

1992 Wrangler Sahara 4.0
3.5 BDS, 33X10.50 BFG AT
Herculined Tub
9000lb superwinch, Magnaflow catback
D44 rear with Electrac and TruTrac up front
Jeep Score: 235
Maine-yj is offline   Reply With Quote Quick reply to this message
Unread 03-02-2003, 06:43 PM   #2
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2005 LJ Wrangler 
Join Date: Feb 2003
Location: Ellicott City MD
Posts: 2,218
ive hird stuff here and there but i wouldnt bother with it, the dollar to hp isnt even worth it
2005 Unlimited Rubicon Hard N Soft Tops, Clayton Long Arm on RE Coils, Warn Bumper/Tire Carrier, Warn Winch N Bumper, Currie Steering, JKS Quicker Disconnects, JKS Front Trac Bar, Bilsteins, CO2 System..Yada Yada Yada
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Unread 03-02-2003, 08:25 PM   #3
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Join Date: Feb 2003
Location: Charlotte, NC
Posts: 29
I have to have a chip in my Z but I will share my experiences with you. If you insist on a chip/prom flash find a good programmer and have him do it custom. Prefabbed crap almost never gets your motor set right like a programmer can. One guy with a camaro LOST 5hp by putting a jet chip in.

DirtyDan is offline   Reply With Quote Quick reply to this message

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