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

vapor canister

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Old Mar 9, 2009 | 06:39 PM
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frank j galus's Avatar
frank j galus
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From: bedford nh
Default vapor canister

If I remove the vapor recovery system do I have to have the prom recalibrated. 86 vette,730ECM. Thanks
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Old Mar 9, 2009 | 08:33 PM
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No, mine threw no codes when it was removed.

You still need to deal with the vapors though. When I performed the Canisterectomy on mine, I made two loops of new line and put a roll over tip valve on it. This way the tank can vent fumes and in case of liquid coming through or a roll over, it will seal shut. I used an in-line model from a fuel cell.
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Old Mar 9, 2009 | 09:55 PM
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Originally Posted by frank j galus
If I remove the vapor recovery system do I have to have the prom recalibrated. 86 vette,730ECM. Thanks
how do you have a 730 ecm, stock was a 165, you swapped it out?
either way no reprogramming, but I still zero out those tables (couple of tables, and raise min. temp. etc.) so it doeasn't try to make the purge command.
Originally Posted by Aardwolf
When I performed the Canisterectomy on mine,
nice clinical term...I just used the original line from the tank to the front for the vent and put a filter on it....I do like the valve idea though

Last edited by mseven; Mar 9, 2009 at 10:00 PM.
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Old Mar 10, 2009 | 03:49 PM
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frank j galus
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From: bedford nh
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Originally Posted by mseven
how do you have a 730 ecm, stock was a 165, you swapped it out?
either way no reprogramming, but I still zero out those tables (couple of tables, and raise min. temp. etc.) so it doeasn't try to make the purge command.

nice clinical term...I just used the original line from the tank to the front for the vent and put a filter on it....I do like the valve idea though
Thanks for the response. Your right Vett is not stock 383,lingenfelter big box,roller cam, 58throttle body,12:1cr 700r, 3.73rear & a few other parts. Again Thanks for the response. Frank
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