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Author Topic: 90 yj mods  (Read 1016 times)

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fireman411

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90 yj mods
« on: February 24, 2011, 01:26:31 PM »
ok I see alot of mods for 91 and better but are there any others good for a 90?I have regeared to 4:88 and I am getting ready to replace the fan to an electric one but what else?
« Last Edit: February 24, 2011, 01:26:52 PM by fireman411 »
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robertsiii

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Re: 90 yj mods
« Reply #1 on: March 05, 2011, 07:53:55 AM »
i found a borla header  that i installed (had to modify steering pump bracket for it to fit) .larger exhaust system helps. went with a spectra cold air intake . there are no mods for ecu.  elec fan really freed engine up. hope this helps      :beers:
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fireman411

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Re: 90 yj mods
« Reply #2 on: March 08, 2011, 08:02:55 PM »
how hard was it to change out the exhaust header? Not to familiar with this type of work. :stupid:
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robertsiii

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Re: 90 yj mods
« Reply #3 on: March 09, 2011, 08:21:06 PM »
total time to remove exhaust/intake manifold and install header/intake manifold and hook-up exhuast pipe was 4hrs. be sure and use a good gasket sealer to prevent gasket failure. dont know if borla header is still available. do a search for 90 yj mods on google there are several good write ups available.
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