Modified XJ Cherokee Tech XJ (84-01)
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Turbo stock Renix 4.0

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Old Oct 19, 2023 | 07:10 PM
  #1  
Big David's Avatar
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From: Gainesville GA
Year: 1999
Model: Cherokee (XJ)
Engine: 4.0
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The only advice I’ve got is to stop making multiple posts about the same thing.
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Old Oct 19, 2023 | 07:58 PM
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From: Northern CT
Year: 1995
Model: Cherokee
Engine: Turbo 4.0
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I can't tell you how the renix will do. I don't have enough experience with it. Piston skirts break without any extra power added I assure you.

Akaxauto makes a front mount 36-1 trigger, this would allow you to run basically any tuner you could want.

I like knock off greddy BOV but thats just personal opinion.

You should go bigger with the injectors and tune them.

The stock good condition fuel pump should be fine. You will beed an AFR gauge.

The 2 bar map sensors won't work any magic. The ecu will see half an atm at 1 full atm. I had transitional detonation on my 96 because I didn't realize how much timing needs to be pulled before hitting 1 atm. My tuner yelled at me then fixed it.
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Old Oct 19, 2023 | 09:13 PM
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thank you for the insight. i wouldve liked to keep the stock crank trigger to keep things simple and have less **** getting covered by mud but i guess if theres no other alternative i'll shoot for that damper trigger wheel you mention. I would like to think that the renix is more forgiving with detonation/knock given the fact it uses the ignition control module to advance/pull timing off depending on knock sensor readings. Im trying to see if a friend has a wideband with a gauge to help monitor afr for a couple of test runs and then we'll move on to the nicer part. my guess is i'll probably stick to a rising rate fuel regulator, try to use the stock fuel pump, bring up pressure to baseline where i can tinker with 5 or 6 psi and if it falls on its face then i'll probably just rip everything out and cry until i save money and time for a standalone, and tune as it should be. just wanted to give it a shot with stock ecm no tune after seeing so many cases online.
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Old Oct 20, 2023 | 06:31 AM
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From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
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Here's my advice. Listen to Trevor (Cummins93).
There's gonna be a lot more involved in tuning etc than you think.
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Old Oct 20, 2023 | 06:32 AM
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From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
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Originally Posted by Big David
The only advice I’ve got is to stop making multiple posts about the same thing.
I fixed that.
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