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 Post subject: Header advice
PostPosted: Tue Mar 01, 2016 6:45 pm 
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Joined: Tue Jan 20, 2015 6:17 pm
Posts: 14
Location: Rutherfordton NC
I have a 1991 metro conv with the 1.0 and just acquired a new header last weekend.
Wondering if any benefit to installing on vehicle
I know the egr port would be blocked and also could not use the factory converter
would this be a problem ?
Thanks Jeff


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 Post subject: Re: Header advice
PostPosted: Wed Mar 02, 2016 5:05 pm 
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Joined: Sun Jun 10, 2012 8:12 am
Posts: 157
Location: Brainerd Minnesota
If you have EGR, blocking the exhaust port may throw a code. My 91 hatch does not have EGR. Blocking the exhaust port, with my header, is a non issue.

Header benefits, on a G10, is debatable. The stock exhaust manifold is pretty much a header design to begin with. Nice aftermarket converters are available from Summit, Jeggs, etc.

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Extreme Make Over....SnowFish Addiction

1991 Metro Xfi Sport, Crower F12142 Cam, +2 degrees on adjustable sprocket, .020 Over, Balanced & Blue Printed, 3.79 final drive, WhiteLine Bushings Everywhere, 185/60R14's, TBI Bridge Delete, Edelbrock Air Cleaner, Stainless Header, 2 Inch Exhaust, Magnaflow GlassPack, Swift Twin Exit Muffler.


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 Post subject: Re: Header advice
PostPosted: Wed Mar 02, 2016 8:56 pm 
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Joined: Wed Dec 24, 2014 10:58 am
Posts: 18
Location: SoCal
You can't really take advantage of items such as headers if you can't change the mapping in the ECM. It is also very unlikely that your aftermarket header is a better design than the OEM one.
Now I take all that back if you have a carburetor because in that case you are the ECM and you can to crazy things to make the engine match your exhaust system.

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