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2013-14 Shelby GT500
Questions for cold air intake
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<blockquote data-quote="Robot_trainer" data-source="post: 16575227" data-attributes="member: 157423"><p>Funny you should mention that. I went down the rabbit hole last June. I decided to replace the 4 year old original S and B screened filter that came with the JLT kit. That filter was disco'd and changed to a shorter, no screen version that flowed more air. When I installed it, I noticed a slight surge at 2000rpm (cruise RPM) steady state. I mentioned this to JLT and they said sometimes the tune is just off enough to cause it. Well I figured second guessing everytime I changed a filter wasnt for me and mentioned this to them. They asked me what mods were on the car (very little-long tube headers, cobrajet throttle body, colder plugs, 170 stat and 3.73s). They sent me a new tune to compensate. I loaded it and it seem to run better. Next day it started throwing bank 2 rich codes. PCM was pulling 25% fuel. I tried loading the Lund tune back in, but got an error (probably my mistake. I never figured the battery would go low after driving the car but I was told the reflash used alot of power and to always have a charger hooked up when re-flashing). Luckily it didnt fry the PCM, but I had a nightmare on my hands. Car would not idle cold and was still seeing -20% trim. I removed the JLT intake, Re-installed the OEM cold air, got a new tune from Lund, disconnected the battery, turned on every switch there was, let it sit 8 hours and then reloaded the tune. That corrected it. Not saying the tunes were at fault because it more than likely it got scrambled, but it was an inconsequential thing that led down this path. To be honest, I didnt notice any performance difference between the JLT and OEM, but thats just around town/highway/passing and I was able to use an aftermarket non oiled Air Raid filter.</p></blockquote><p></p>
[QUOTE="Robot_trainer, post: 16575227, member: 157423"] Funny you should mention that. I went down the rabbit hole last June. I decided to replace the 4 year old original S and B screened filter that came with the JLT kit. That filter was disco'd and changed to a shorter, no screen version that flowed more air. When I installed it, I noticed a slight surge at 2000rpm (cruise RPM) steady state. I mentioned this to JLT and they said sometimes the tune is just off enough to cause it. Well I figured second guessing everytime I changed a filter wasnt for me and mentioned this to them. They asked me what mods were on the car (very little-long tube headers, cobrajet throttle body, colder plugs, 170 stat and 3.73s). They sent me a new tune to compensate. I loaded it and it seem to run better. Next day it started throwing bank 2 rich codes. PCM was pulling 25% fuel. I tried loading the Lund tune back in, but got an error (probably my mistake. I never figured the battery would go low after driving the car but I was told the reflash used alot of power and to always have a charger hooked up when re-flashing). Luckily it didnt fry the PCM, but I had a nightmare on my hands. Car would not idle cold and was still seeing -20% trim. I removed the JLT intake, Re-installed the OEM cold air, got a new tune from Lund, disconnected the battery, turned on every switch there was, let it sit 8 hours and then reloaded the tune. That corrected it. Not saying the tunes were at fault because it more than likely it got scrambled, but it was an inconsequential thing that led down this path. To be honest, I didnt notice any performance difference between the JLT and OEM, but thats just around town/highway/passing and I was able to use an aftermarket non oiled Air Raid filter. [/QUOTE]
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Questions for cold air intake
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