OBD2 + Straight pipe = lean??
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Joined: Dec 2004
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From: glendale, CA, Afghanistan
OBD2 + Straight pipe = lean??
correct me if im wrong, but if theres a obd 2 car with a striaght up with a stock ecu, will the same reading, which cuases it to try to fix it by making my a/f mixture more lean....??
Thread Starter
Joined: Dec 2004
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From: glendale, CA, Afghanistan
ill take that as a yes 
took out my plugs last night, they are extremely FROSTY. would it be more safe to run a p28 (virgin) on an em1 w/ a straight pipe or just F it and put my cat back??
took out my plugs last night, they are extremely FROSTY. would it be more safe to run a p28 (virgin) on an em1 w/ a straight pipe or just F it and put my cat back??
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Joined: Aug 2005
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From: San Jose, CA, US
Re: (andysila)
no it wont be lean dude. your check engine light will come on tho because the secondary post o2 will not be getting a good reading. A test pipe is for better flow, less restriction. Ths secondary o2 is for catalytic effeciency. so since you have a straght pipe it wont get any reading at all.
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From: los banos, ca
Re: (fmrprojects)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by fmrprojects »</TD></TR><TR><TD CLASS="quote">no it wont be lean dude. your check engine light will come on tho because the secondary post o2 will not be getting a good reading. A test pipe is for better flow, less restriction. Ths secondary o2 is for catalytic effeciency. so since you have a straght pipe it wont get any reading at all.</TD></TR></TABLE>
this is why you need to get your p28 chiped...it doesnt care about the 2nd o2 sensor...
this is why you need to get your p28 chiped...it doesnt care about the 2nd o2 sensor...
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From: los banos, ca
Re: (andysila)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by andysila »</TD></TR><TR><TD CLASS="quote">actually, its been running VERY lean.
</TD></TR></TABLE>
do you have a wideband and can prove this? yes it runs lean under most conditions but when you go into vtec im sure like most honda's it runs very rich
</TD></TR></TABLE>
do you have a wideband and can prove this? yes it runs lean under most conditions but when you go into vtec im sure like most honda's it runs very rich
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Joined: Jun 2004
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From: los banos, ca
Re: (M@)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by M@ »</TD></TR><TR><TD CLASS="quote">I think his plugs prove that it was lean when he killed the motor.</TD></TR></TABLE>
that sucks...
that sucks...
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