Questions on fuel injection replacement [message #225069] |
Thu, 10 October 2013 11:31 ![Go to next message Go to next message](/GMCforum/theme/default/images/down.png) |
Bob S.
![United States United States](/GMCforum/images/flags/us.png) Messages: 143 Registered: October 2012 Location: Rapid City, SD
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I have a 78 Royale that had the original 403 replaced with a 455. The original owner also installed an "Air Sensors" fuel injection system that I would like to replace.
I have been reading about the Howell system and see that it is highly recommended by the GMC community. It appears that the best way to go is to get the system with EBL. If I understand it correctly EBL allows you to reprogram the system for different driving conditions. My concern is that I am not very computer savvy and don't want to mess with reprogramming when traveling.
The mechanic that I use (highly trusted)recommended a system by a company called "Professional Products" that is a true wide band system and is self learning. He has used a lot of these systems in the past on off road vehicles and has had good luck with them.
I have learned to respect the knowledge and information that I find on this forum, so I would like to hear any and all comments and opinions on this.
Please understand that I am very interested in keeping the GMC vendors in business and this is not about beating them out of profits. I am trying to apply the KISS principle and install a reliable system that does not require a lot of attention while traveling. Thank you, Bob S.
Bob and Pam Schilling
Rapid City, SD
"78 Royale
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Re: Questions on fuel injection replacement [message #225092 is a reply to message #225069] |
Thu, 10 October 2013 16:27 ![Go to previous message Go to previous message](/GMCforum/theme/default/images/up.png) ![Go to next message Go to next message](/GMCforum/theme/default/images/down.png) |
jhb1
![Canada Canada](/GMCforum/images/flags/ca.png) Messages: 303 Registered: February 2004
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Hi Bob
If you decide to remove the Airsensors system please keep me in mind as I have that system on my Royale it is been very reliable 10 plus years except for breaking the sense wire in the mass flow sensor once repaired it myself with some in chrome wire.
Bob S. wrote on Thu, 10 October 2013 12:31 | I have a 78 Royale that had the original 403 replaced with a 455. The original owner also installed an "Air Sensors" fuel injection system that I would like to replace.
I have been reading about the Howell system and see that it is highly recommended by the GMC community. It appears that the best way to go is to get the system with EBL. If I understand it correctly EBL allows you to reprogram the system for different driving conditions. My concern is that I am not very computer savvy and don't want to mess with reprogramming when traveling.
The mechanic that I use (highly trusted)recommended a system by a company called "Professional Products" that is a true wide band system and is self learning. He has used a lot of these systems in the past on off road vehicles and has had good luck with them.
I have learned to respect the knowledge and information that I find on this forum, so I would like to hear any and all comments and opinions on this.
Please understand that I am very interested in keeping the GMC vendors in business and this is not about beating them out of profits. I am trying to apply the KISS principle and install a reliable system that does not require a lot of attention while traveling. Thank you, Bob S.
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John H. Bell
77 Royale; QuadBag,Manny OneTon,Honda EV4010, FITech
Montreal Qc.
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Re: Questions on fuel injection replacement [message #225097 is a reply to message #225069] |
Thu, 10 October 2013 17:17 ![Go to previous message Go to previous message](/GMCforum/theme/default/images/up.png) ![Go to next message Go to next message](/GMCforum/theme/default/images/down.png) |
Bob S.
![United States United States](/GMCforum/images/flags/us.png) Messages: 143 Registered: October 2012 Location: Rapid City, SD
Karma: 2
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Hi John, I will keep you in mind when I replace this system. It will probably be next spring before I get it done. I will have no use for most of the components after that so you're welcome to them.
The PO said that this has been very reliable, but recently it has been stalling at stop lights and then is hard to restart. My mechanic suspects mass air flow issues but with this system there are no parts available and difficult to diagnose. I am of the opinion that it is probably time to upgrade to a more advanced system. Bob S.
Bob and Pam Schilling
Rapid City, SD
"78 Royale
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Re: Questions on fuel injection replacement [message #225098 is a reply to message #225097] |
Thu, 10 October 2013 17:29 ![Go to previous message Go to previous message](/GMCforum/theme/default/images/up.png) ![Go to next message Go to next message](/GMCforum/theme/default/images/down.png) |
Larry
![United States United States](/GMCforum/images/flags/us.png) Messages: 2875 Registered: January 2004 Location: Menomonie, WI
Karma: 10
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Bob S. wrote on Thu, 10 October 2013 17:17 | Hi John, I will keep you in mind when I replace this system. It will probably be next spring before I get it done. I will have no use for most of the components after that so you're welcome to them.
The PO said that this has been very reliable, but recently it has been stalling at stop lights and then is hard to restart. My mechanic suspects mass air flow issues but with this system there are no parts available and difficult to diagnose. I am of the opinion that it is probably time to upgrade to a more advanced system. Bob S.
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I was at a Carb shop yesterday and talked some to the owner. He installed a Edlebrock self learn system on his (I think, Roadrunner) and is very happy with it. He also showed me a Howell self learn system. I didn't spend a lot of time talking to him about them, but it might be worth looking at these systems before you decide on a system where you must use the EBL for tuning. I sure wish this kind of system was around when I started my EFI conversion. Pricey, but after you gather up all of the parts or buy a adjustable system and the EBL, it might cost as much as one of the self learn plug and play systems....just say'n....
Larry ![Smile](images/smiley_icons/icon_smile.gif)
78 Royale w/500 Caddy
Menomonie, WI.
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Re: Questions on fuel injection replacement [message #225206 is a reply to message #225069] |
Fri, 11 October 2013 09:56 ![Go to previous message Go to previous message](/GMCforum/theme/default/images/up.png) ![Go to next message Go to next message](/GMCforum/theme/default/images/down.png) |
Bob S.
![United States United States](/GMCforum/images/flags/us.png) Messages: 143 Registered: October 2012 Location: Rapid City, SD
Karma: 2
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Thank you for all of your input. I am not sure I understand exactly what the EBL does. There is a good possibility that I see it as much more of a hassle than it is, and under estimate the benefits of it. If someone could give me a simple understanding of what it does, it might make it easier to make my decision. Thanks again, Bob S.
Bob and Pam Schilling
Rapid City, SD
"78 Royale
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Re: [GMCnet] Questions on fuel injection replacement [message #225322 is a reply to message #225069] |
Sat, 12 October 2013 07:47 ![Go to previous message Go to previous message](/GMCforum/theme/default/images/up.png) |
Steven Ferguson
![United States United States](/GMCforum/images/flags/us.png) Messages: 3447 Registered: May 2006
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Carefully remove that old Air Sensors system and put it on EBAY. Mine sold
immediately as there are folks out there looking for them. If you don't
sell it, keep the air duct on the top of the carb, RARE and will work with
any remote air cleaner.
Steve F.
On Thu, Oct 10, 2013 at 9:31 AM, Bob Schilling <bschilling@rushmore.com>wrote:
>
>
> I have a 78 Royale that had the original 403 replaced with a 455. The
> original owner also installed an "Air Sensors" fuel injection system that I
> would like to replace.
> I have been reading about the Howell system and see that it is highly
> recommended by the GMC community. It appears that the best way to go is to
> get the system with EBL. If I understand it correctly EBL allows you to
> reprogram the system for different driving conditions. My concern is that I
> am not very computer savvy and don't want to mess with reprogramming when
> traveling.
> The mechanic that I use (highly trusted)recommended a system by a
> company called "Professional Products" that is a true wide band system and
> is self learning. He has used a lot of these systems in the past on off
> road vehicles and has had good luck with them.
> I have learned to respect the knowledge and information that I find on
> this forum, so I would like to hear any and all comments and opinions on
> this.
> Please understand that I am very interested in keeping the GMC vendors
> in business and this is not about beating them out of profits. I am trying
> to apply the KISS principle and install a reliable system that does not
> require a lot of attention while traveling. Thank you, Bob S.
> --
> Bob and Pam Schilling
> Rapid City, SD
> "78 Royale
>
> _______________________________________________
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--
Take care,
Steve
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