My evo x is overboosting past 30psi. NEED HELP!! - EvoXForums.com - Mitsubishi Lancer Evolution X Forums
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Evo X Tuning Discussion for tuning & engine control systems that are unique to the Evo X. IF THE TOPIC IS COMMON WITH OTHER LANCERS, PLEASE POST IT IN: '08+ Lancer Common.

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Old 10-18-2015, 04:50 AM   #1
Vk_evo16
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My evo x is overboosting past 30psi. NEED HELP!!

So my evo x has a few aftermarket parts. Intake, headers, downpipe, full exhaust, and bov. I'ts been running weird. I have a boost gauge and an cobalt wideband afr gauge. The weird thing is that the afr gauge doesn't show me ratio numbers. It just has different colored lights. Green, yellow, and red. And every time i step on it the boost goes over 30psi and my service awd light goes on. I bought my car like this i don't know if the previous owner tuned it. PLEASE HELP.
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Old 10-18-2015, 04:54 AM   #2
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Gauges

Here are the pics of my gauges.
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Old 10-18-2015, 11:54 AM   #3
mayhem
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The only help is a professional tuner. You have so many aftermarket parts and an unknown tune. If you have to drive it to a shop stay out of boat and drive like a grandma. If you keep "stepping on it" you'll be needing a new block.
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Old 10-18-2015, 05:17 PM   #4
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But what about my gauges. Why don't they show the ratio like they're supposed to?
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Old 10-18-2015, 06:06 PM   #5
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Do you have to calibrate the AFR gauge?
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Old 10-18-2015, 09:00 PM   #6
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I don't know. I purchased this car like this. The gauge shows the different lights. I scheduled a tune this Thursday, but i need this car as a daily. I got college and work. So i don't know if it's fine to drive it. I understand that if the gauge worked i would be able to tell if it's running lean or not.
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Old 10-20-2015, 01:56 AM   #7
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How can i calibrate my afr gauge?
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Old 10-20-2015, 02:08 AM   #8
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If you MUST drive this car in its condition, atleast until a shop can PROPERLY take care and tune it, drive it as if you are trying to squeeze every last mpg possible out of it. Please. just smooth, easy out of boost driving.
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