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So i have a X3 power flash and there are no preloaded tunes, i have 1 tune for free and i was thinking about using it for 93 octane and LT header tune but i dont have the LT headers yet. Would running this tune for the 93 octane now not harm anything until i get the LTs in?
 

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99% of the time when you do header job, you will get code P0155, cause your o2 aren't getting as hot as they usaul did, so you almost always gotta tune them or get a delay, also if you run that tune you will probably run rich
 

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While some may not need a tune for LTs, may times the car will run like crap unless the tune is adjusted for the increased delay in o2 response time and lack of hot exhaust. I would see no problem running an LT tune with no LTs.
 

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And do not run a LT tune if you do not have long tubes either. I did this and the car would not run right and when it would go above 2000 rpms it would throw a cel and the car would shut off.
 

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i was pretty sure that rich ran his kooks w/o a tune for a long time
 

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roxas, what current mods do you run?

where in NJ are you?
 
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