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tune after catless exhaust install?

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Old 03-08-2015, 08:12 PM
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Default tune after catless exhaust install?
I have a 99 z28 and have already had my pcm sent out and had a frost tune done with current mods;including a air/egr code delete. Now I'm about to install long tubes and true dual exhaust without cats and air/egr. Will I need my pcm retuned again?
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Old 03-09-2015, 11:47 AM
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For getting the most out of the new exhaust mods installed, and to also eliminate any CEL you might get from the catless pipes yes it's usually recommended to get a re-tune.
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Old 03-09-2015, 11:57 AM
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Originally Posted by Z28U!
I have a 99 z28 and have already had my pcm sent out and had a frost tune done with current mods;including a air/egr code delete. Now I'm about to install long tubes and true dual exhaust without cats and air/egr. Will I need my pcm retuned again?
Hi Z28U, where are you located?
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Old 03-09-2015, 12:33 PM
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Maryland



Originally Posted by 1slowbusa
Hi Z28U, where are you located?
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Old 03-09-2015, 05:43 PM
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Originally Posted by Z28U!
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Ok gotcha, how far are you from 18072? Do you have a wideband on the car and does it have an output?
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Old 03-09-2015, 07:08 PM
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About 4 hrs away and I don't belI've so
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could a bad tune be causing this? strange symptoms




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