| exhaust header & EFI [message #344079] |
Sun, 09 June 2019 11:14  |
jfkarls
Messages: 53
Registered: June 2019
Location: Racine, Wisconsin
Karma: 0
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I've read a lot of posts regarding fumes inside cabin and it appears that two changes can help: 1) Headers and, 2) EFI system to help burn fuel more efficiently. I do smell like exhaust & gas when I get out of cabin so I know it's running very rich. OK my questions for you professionals are this: 1) what is the best set of headers to buy & should one buy the whole pipe and muffler package? seems kind of expensive, can a local guy do it cheaper? and 2) Whats the best EFI system to buy? Thanks for all your help guys - JFK
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| Re: exhaust header & EFI [message #344083 is a reply to message #344079] |
Sun, 09 June 2019 12:32  |
JohnL455
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
Karma: 12
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If you don't hear an exhaust leak up front, you probably don't have one.
Your carb may need a simple choke clean/ adjustment and idle mixture adjustment. Only a few minutes job and about $1 in chemicals.
John Lebetski
Woodstock, IL
77 Eleganza II
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| Re: exhaust header & EFI [message #344087 is a reply to message #344079] |
Sun, 09 June 2019 14:44 |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
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Uh Jody, where are ya and who are ya?  For a package system, the Atomic MSD seems to do well. You might look at the Holley Sniper. It's a new product but it has Holley behind it so I'd expect excellent tech support and a good product. FiTech has one out which has had some early hiccups, I expect they're sorted out by now. If you're a tinkerer, and you want to go the whole gallon instead of a bolt on, speak with Jim Kanomata at Applied GMC about a system which uses GM parts and is highly configurable. It isn't 'plug n play' but there are many GMCers who have it, and like it. There are several gurus who can help you get it going properly and tune it to your coach and driving style. It controls timing as well as fuel, and thereby gives you 10% or so increased mileage. Remember, ten percent is probably less than 1 MPG on these coaches. I think Howell Industries makes it, but ask Jimmy the K.
--johnny
Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
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| Re: exhaust header & EFI [message #344088 is a reply to message #344079] |
Sun, 09 June 2019 14:51 |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
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And, much of the Howell system can be sourced off certain GMC products down at your friendly Men's Mall (junkyard) if you're tool handy and cheap. Applied will sell you pretty much anything from the complete system down to individual pieces. The major selling point is, pretty much all the pieces can be bought across the counter at Advanced or O'Riellys since there are some several million GMC products out there using it. It comes down to how much assembly are you comfortable with.
--johnny
Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
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| Re: exhaust header & EFI [message #344089 is a reply to message #344088] |
Sun, 09 June 2019 15:13 |
jfkarls
Messages: 53
Registered: June 2019
Location: Racine, Wisconsin
Karma: 0
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THANKS GUYS - this site is outstanding - I am really happy to have found you guys. I joined a gmc Facebook group and they seem to be almost hostile. I posted basically these same questions and a couple of guys practically called me an idiot, Yikes - I like it here WAY better - thanks again guys - oh Sorry I'm in Racine Wisconsin, I have to improve my profile with more info- cheers
Joe & Valerie Karls
1976 Eleganza II, & 1976 Palm Beach - Also own
1967 Lincoln Continental Convertible,
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| Re: [GMCnet] exhaust header & EFI [message #344092 is a reply to message #344088] |
Sun, 09 June 2019 15:34 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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We have been assisting people on how to have a true 100% up to date EFI,
not just a glorified squirt gun system.
The Howell based system utilizing the EBL Flash drive just require little
time to hook up sensors. Out performs the others and give better mileage as
the ignition timing control is what the others cannot duplicate for the GMC
MH.
On Sun, Jun 9, 2019 at 1:22 PM Johnny Bridges via Gmclist <
gmclist@list.gmcnet.org> wrote:
> And, much of the Howell system can be sourced off certain GMC products
> down at your friendly Men's Mall (junkyard) if you're tool handy and cheap.
> Applied will sell you pretty much anything from the complete system down
> to individual pieces. The major selling point is, pretty much all the
> pieces
> can be bought across the counter at Advanced or O'Riellys since there are
> some several million GMC products out there using it. It comes down to how
> much assembly are you comfortable with.
>
> --johnny
> --
> Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
> Braselton, Ga.
> I forgive them all, save those who hurt the dogs. They must answer to me
> in hell
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
--
Jim Kanomata
Applied/GMC, Newark,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
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GMCnet mailing list
Unsubscribe or Change List Options:
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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| Re: exhaust header & EFI [message #344187 is a reply to message #344079] |
Thu, 13 June 2019 11:58 |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
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Senior Member |
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Boat = hole in the water into which you pour money. GMC = the land version which has more fun and utility, but still ain't free.
--johnny
Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
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| Re: exhaust header & EFI [message #344238 is a reply to message #344188] |
Sun, 16 June 2019 11:53 |
jfkarls
Messages: 53
Registered: June 2019
Location: Racine, Wisconsin
Karma: 0
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Finally got under my unit - fumes are a result of pipe not going all the way back to bumper & the long pipe is split most of its length - always feels good knowing what the fix is!
Joe & Valerie Karls
1976 Eleganza II, & 1976 Palm Beach - Also own
1967 Lincoln Continental Convertible,
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