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Help engine light popping up after extractors installed ls1

Logz55

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Hey have recently had extractors pit on my vt ss ls1 and have had the engine light pop up now and then have replaced oxygen sensors what else could this be car runs fine cheers
 

st3r3otyp3

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is it when your on the highway/freeway, or just at 0k~80k
 

st3r3otyp3

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you can get a cheap obd2 tool on egay and check the code or go down to holdens and get em to check it, I had a problem like this on a 5 litre that turned out to be a IAT sensor. it came on at highway speed.
 

Logz55

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Yeh generally around that area do you need to tune the car after longtubes put on?
 

st3r3otyp3

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no, its not "necessary", it should not be spitting codes.... unless, did you change the cats as well?
 

Logz55

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Yes it does but they were on before extractors with no problem!
 

Logz55

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**has high flow cats
 

franklinfrog

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Extractors will burn off a coating and stuff the oxy sensors so if you did the sensors at the same time as the extractors it will be the sensors.

Otherwise could have cracked a spark plug or damaged a lead, any mis firing?

Clean you maf sensor, could be a coincidence.

If none of this works, then you're gunna need a tune, high flow cats change the exhaust mixtures and O2 sensors can't handle it. Adding extractors might have just pushed it over the edge.

Really need to know what code it's throwing, fourth post down...
http://forums.justcommodores.com.au/vt-vx-holden-commodore-1997-2002/185745-ls1-reading-codes.html
 

Logz55

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It's hard to get a code coz the engine light isn't always on only does it now and then has new plugs leads and oxygen sensors it's running fine it was spluttering fixed u2 sensors and the spluttering is gone now it's just the light now and then i was thinking it might need a tune but was told it should adjust itself they moved the o2 sensors further down the extractors from where they were but they havnt used extensions they just plugged them in to the original plugs the u2 sensors are before the cats is that correct?
 

Not_An_Abba_Fan

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How long after the extractors were put on that the sensors were done?
 
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