Installing long tubes. What do I tell the on board computer - Hemi Truck Club
 
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Old 04-10-2016, 02:57 PM   #1
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Installing long tubes. What do I tell the on board computer

Installing long tubes on my 04 1500 5.7 4x4. I have a DiabloSport intune I2 I2010 tuner. I am using the 93 octane tune. I am going to be installing headers next weekend. Any body have a suggestion on best parameter adjustment for the long tubes. Only other mod is a cold air intake.

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Old 04-10-2016, 04:27 PM   #2
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Old 04-10-2016, 05:25 PM   #3
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You shouldnt need to adjust anything really. Maybe add a little fuel at wot across the board like 1%. Real thing will be if the computer throws codes for catts if you remove them that will need a custom tune to turn the light of or use foulers which work sometimes or just delay the light from coming on later
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Old 04-10-2016, 05:40 PM   #4
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The system I bought is made by OBX comes with resonators not cats. But I hear stock 02 sensors will work. I will adjust to the 1% fuel. Didn't think I needed to mess with the timing. I'm going to have them ceramic coated before I install them. Will see what happens.
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Old 04-10-2016, 05:44 PM   #5
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Old 04-10-2016, 06:20 PM   #6
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Old 04-14-2016, 06:04 PM   #7
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Installed OBX long tube kit. The fitment was good. I had to get longer bolts for the head flanges and had a slight clearance issue with the y-pipe on transfer case. O2 sensor extensions are needed on the rear. I chose to plug the sensors into the harness and zip tie them to the transfer case mount and so far no check engine light. Made slight adjustment on tune and it seems to run pretty good. I thought it was going to be a lot louder but the resonators give it a nice mellow tone . We let you know if check engine light comes on in the future.
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Old 04-14-2016, 06:26 PM   #8
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