No Cat.= Engine Check Light
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Big Ballin' GangSTAR
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No Cat.= Engine Check Light
I have straight pipe and my engine check light wont go off. Anyone out there able to correct this problem? Also, will the Comptech headers work better cuz i have no catalytic converter?
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The exhaust system has already been optimized...the only thing worth changing are the mufflers for maybe 2-3whp gain. Removing the cat results in loss of crucial low end torque for a minor gain in high end hp....plus it sounds like shit. But if you insist on doing the straight pipe...you need to plug back in the O2 sensor that was plugged into the cat.
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Re: No Cat.= Engine Check Light
Originally posted by DaXtReMeP!MP
I have straight pipe and my engine check light wont go off. Anyone out there able to correct this problem? Also, will the Comptech headers work better cuz i have no catalytic converter?
I have straight pipe and my engine check light wont go off. Anyone out there able to correct this problem? Also, will the Comptech headers work better cuz i have no catalytic converter?
Also, it looks like you are in CA which removing the cat is a crime (for you and whoever did the work). Don't they have visual inspection there??
Yes, the Comptech headers would work with a straight pipe, it would just need to be welded in place.
BTW, the most there is to gain is maybe 5 HP up high, not worth it IMO...
#5
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Re: Re: No Cat.= Engine Check Light
Originally posted by scalbert
Also, it looks like you are in CA which removing the cat is a crime (for you and whoever did the work). Don't they have visual inspection there??
Also, it looks like you are in CA which removing the cat is a crime (for you and whoever did the work). Don't they have visual inspection there??
I believe that you are correct about it being a crime to remove the catalytic converter. Not worth the pain if you get caught.
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what the hell is that smaller muffler looking thing up by the cat? can that thing be removed? would it help performance?? i cant figure out what that is and why it would be needed when theres already 2 mufflers out the back of the car
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Originally posted by jimcol711
what the hell is that smaller muffler looking thing up by the cat? can that thing be removed?
what the hell is that smaller muffler looking thing up by the cat? can that thing be removed?
If you are talking about just before the only item there is the flex section. There is nothing to be gained by removing this and a something to be lost in the way of vibration and possibly a cracked manifold.
The only thing after the cat is at least five feet away towards the mufflers and that is the resonator. There may be 1 HP gained by removing it but you might get a droning sound while cruising.
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#8
You should be able to fashion a resistor to plug inline on the wiring from the rear O2 to give it a constant value to trick the computer into believing the cats are there and functioning properly. Now what ohm value you need to use for your car, I dunno.
FWIW, here is an example of the resistor used on my mustang (though I made my own, not the prefabbed one)...
http://www.mileliminators.com/
FWIW, here is an example of the resistor used on my mustang (though I made my own, not the prefabbed one)...
http://www.mileliminators.com/
#9
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that's what i did before... and the light will just stay on... take it from me, it's not worth having a straight pipe on our car, just put it back on. i got a ticket for it and it was really painful.
i see you live in my home area, we should meet up
i see you live in my home area, we should meet up
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Sorry people I've been away from the almighty computer for a couple of days. Yes it is illegal to have straight pipe in California. However, there are many ways around it. First, just bore out the cat to make it look like the cat is still there. But of course the cat becomes nothing more than piping. Thats what I did. Now I kinda regret it. To pass smog si really simple. Some mechanics in the Southern Cali area will pass your car for smog for an extra $60-$100. Anyone know where I can get a factory cat for cheap???
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