[Gmecm] GMECM

Thu Nov 3 17:42:59 UTC 2005

no i do not have a crossover pipe on both sides it goes 
engine>header>pipe>cat>pipe>muffler>pipe>tips

where does the crossover branch the 2 together before the cat after the 
muffler etc the drive shaft is really obstructing the way

and then after the exhausts are joined where does the 02 sensor go

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From:  <i>?ke Georgsson <papegoj at telia.com></i><br>Reply-To:  
<i>gmecm at diy-efi.org</i><br>To:  <i>gmecm at diy-efi.org</i><br>Subject:  
<i>Re: [Gmecm] GMECM</i><br>Date:  <i>Thu, 03 Nov 2005 08:06:00 
+0100</i><br>
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lostrecep tion wrote:
<blockquote cite="midBAY101-F1610A8A5A6BE6CE3E2497FB6610 at phx.gbl">I 
currently have a 1990 Chevy G20 Van. With a V8 350 5.7l
engine ECM 1227747
 
 
its been running fine until i put dual exhaust on it now its not
running well at all the idle is very rough at idle and also at slow
speeds (most notably when its cold out)
 
 
Ive been told by my mecanic i can be a number of things but 02 sensors
seem to always come up as my ecu supports 1 o2 sensor and with dual
exhause i should technically have 2 ? Right or wrong?
 
 
id like to possibly avoid doing a flash of the eeprom as im not totaly
familiar with it and was hoping that someone may know of a solution to
fix this problem . preferably not a real expensive one ive invested
quite alot of money in this truck and really want it running well again
 
 
thanks very much for your help -Mike
 
 
 
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</blockquote>
are they separate or do u have an crossower pipe ? u shoud still use
one O2 sensor . if u not have this crossowerpipe between the
exhausepipes this p?roblem can come 
 
look at this one att <a class=moz-txt-link-abbreviated 
href="http://www.summitracing.com">www.summitracing.com</a> 
<h1> SUM-642130 </h1>
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