C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

With headers & cat-back, will I need a custom chip?

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Old Jul 29, 2003 | 07:38 AM
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From: OBAMA IS HITLER
Default With headers & cat-back, will I need a custom chip?

Recently installed my Magnaflow cat-back, right on the horizon now is Hooker headers (2149) and their front Y-pipe (eliminates pre-cats). With the exhaust modifications to my L98, will I need to run a modified program to accomodate?

Also.......what are the pros & cons of also gutting the stock main cat & running a pipe thru (sniffer test not a concern)? I'm debating whether I should leave the cat alone with the exhaust mods, or have it worked over.

Thanks for any input! :seeya
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Old Jul 29, 2003 | 09:25 AM
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Default Re: With headers & cat-back, will I need a custom chip? (bradvette)

i would go with level 2 chip, you will see some gains and will run better. also i gutted the cat on my 90, ran stronger but a lot louder.
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Old Jul 29, 2003 | 09:43 AM
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Default Re: With headers & cat-back, will I need a custom chip? (bradvette)

No chip is necessary.
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Old Jul 29, 2003 | 10:12 AM
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Default Re: With headers & cat-back, will I need a custom chip? (vader86)

:iagree: but i think it will help.
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Old Jul 29, 2003 | 12:40 PM
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Default Re: With headers & cat-back, will I need a custom chip? (mos90)

I definately think a chip will help...I have long tubes into straight pipes into stock mufflers...I ran 13.8's with the stock chip...had one burned and tweaked and now I'm running between 13.4 and 13.6's... good luck
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