Cat bypass...really turns on the check engine light?

[btcog82]

OK, I guess I should go ahead and ask, since I will be doing this next week .

I bought an ARK exhuast and dali test pipes, to bypass the cats. I was reading on someone elses post that their exhaust wasn't loud enough, but...

they didn't want to bypass the cats because it would trip the check engine light....

IS THIS SO??

So, how can I get the check engine light to go off then, or fix that problem if this is true?

Suggestions NOW will help me next week, thanks very much!

 

[m3456y]

Before I got my AEM installed, I had a small electronic device made by Comptech, that "fools" the computer into thinking the cats are working. No check engine lights.

OK, I guess I should go ahead and ask, since I will be doing this next week .

I bought an ARK exhuast and dali test pipes, to bypass the cats. I was reading on someone elses post that their exhaust wasn't loud enough, but...

they didn't want to bypass the cats because it would trip the check engine light....

IS THIS SO??

So, how can I get the check engine light to go off then, or fix that problem if this is true?

Suggestions NOW will help me next week, thanks very much!

 

[Understudy]

bypass the cats because it would trip the check engine light

IS THIS SO??

No need to worry about it for you! This only applies to OBDII cars, your '91 is OBDI and therefore no issues with a CEL. Enjoy your new exhaust.

 

[Big_nate]

^^^ What he said. For those with the OBDII cars and after cat o2 bung, heres a good trick that eliminates the need for an electronic 02 simulator
http://www.s2ki.com/forums/index.php?showtopic=229959

 

[btcog82]

hehe...thanks fellas cant wait!:biggrin:

 

[simonprelude]

It definately works aswell (on my S2000 anyway) NSX is still standard so don't know about on there.

^^^ What he said. For those with the OBDII cars and after cat o2 bung, heres a good trick that eliminates the need for an electronic 02 simulator
http://www.s2ki.com/forums/index.php?showtopic=229959