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Changing from long tube header to shorty, do I need a tune?

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Old 02-17-2019, 11:54 PM
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Default Changing from long tube header to shorty, do I need a tune?
I already had the car dyno tuned (13.0 afr). I live in CA, and want to stay away from the popos giving out exhaust tickets. My question is do I have to retune the car? I'll be installing bbk shorty headers in place of slp long tubes.

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Old 02-18-2019, 06:05 AM
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Does your current set of headers cause your vehicle to smoke, sound loud, fail a tail pipe test, visual examination or otherwise attract attention to your vehicle? Are these two sets of headers CARB approved? These are the questions I would confront first.

Rick
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Old 02-18-2019, 06:22 AM
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Yes, you should retune the car.
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Old 02-18-2019, 06:24 AM
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Originally Posted by B52bombardier1
Does your current set of headers cause your vehicle to smoke, sound loud, fail a tail pipe test, visual examination or otherwise attract attention to your vehicle? Are these two sets of headers CARB approved? These are the questions I would confront first.

Rick
long tubes are not going to pass the visual in California, nor would they clear a sniffer. No lt’s are carb compliant anyway since they move the location of the cats, if you even have them installed
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Old 02-18-2019, 12:19 PM
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Originally Posted by B52bombardier1
Does your current set of headers cause your vehicle to smoke, sound loud, fail a tail pipe test, visual examination or otherwise attract attention to your vehicle? Are these two sets of headers CARB approved? These are the questions I would confront first.

Rick

Hi Rick,

no the car doesn't attract attention, but I don't want to risk a state ref ticket. They are carb approved.

Oh and the car has high flow cats.
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