I have an 01 integra gsr and a few weeks ago i put on a hytech header, high flow cat, and t1r exhaust. Ever since I put it on, the CEL came on, there are dead spots from 2500-4000 rpm, and my gas mileage is going to ****. Should I go back to stock, or get a p28 ecu, chip it and tune it?

 

Did you pull the codes to determine why the CEL is illuminated?

 

And hopefully youre utilizing your 02 sensor.

 

what do u mean by utilizing my o2 sensor? and how would i pull the codes to see?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DC2_2 &raquo;</TD></TR><TR><TD CLASS="quote">what do u mean by utilizing my o2 sensor? and how would i pull the codes to see?</TD></TR></TABLE>

CEL procedure linked in the forum FAQ:
https://honda-tech.com/zerothread?id=978933

 

ok so i checked the code and it showed a 63- secondary oxygen sensor. so does that mean i need a new o2 sensor?

 

The secondary O2 sensor justs check s the performance of the catalytic converter. What gas are you running in your car? Where is the ignition timing set? Low octane or advanced timing can cause the knock sensor to intervene, yielding poor performance and lowered gas mileage.

 

oh i see. thanks for the help

 

so i took my car out for a quick cruise this morning and its running realy rich. any advice?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by posHonda &raquo;</TD></TR><TR><TD CLASS="quote">And hopefully youre utilizing your 02 sensor.</TD></TR></TABLE>

x2. i think is that too.

 

what do u mean by utilizing it?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DC2_2 &raquo;</TD></TR><TR><TD CLASS="quote">what do u mean by utilizing it?</TD></TR></TABLE>

They are asking if you reinstalled it when you swapped the header and catalytic converter.

 

yes i did