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Old 06-05-2004, 05:41 AM   #1
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Default Straight pipe? lean?

About a month and a half ago i put a new magnaflow high-flow cat on my car and already its clogged, so i just decided to do a regular tune up and see if it helped any well the old plugs 3 of them the tips were completely burnt off and 3 of the cylinders were running lean, so until i could get enough money i just bought bosch +4'* for now, well how do i stop my car from running lean? and would just straght piping my exhaust be a good thing or a bad thing? any help would be appreciated
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Old 06-05-2004, 01:43 PM   #2
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striaght piping would be bad. The Bosch spark plugs should be temporary, as they wont last long. Do you mean to delete the cat or go with the entire exhaust as a straight pipe?
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Old 06-05-2004, 02:37 PM   #3
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Running lean won't clog a cat. You're running rich. How old is your O2 sensor, and what brand is it?
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Old 06-05-2004, 04:22 PM   #4
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Just deleting the cat sorry, not the whole exhaust, and i dont know about the O2 sensor, havent even checked that....., hmm, guess when i get the NGK'* i should get a new O2 sensor,what brand sensor should i go with? and the plugs were white, doesnt that mean they are running lean? how do i fix that?
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Old 06-05-2004, 04:25 PM   #5
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Get an AC Delco O2. They are best for our cars. I was undr the impression white meant lean too. Rich usually leaves plugs black.
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Old 06-05-2004, 04:54 PM   #6
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Ok, im gonna go to autozone and get the O2 sensor, now the local napa should have the NGK plugs? and with the mods i should have should i get the TR55'* or the TR6? and also where is the O2 sensor on my car? i wouldnt know where to look
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Old 06-05-2004, 05:16 PM   #7
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It'* possible the car ran rich in the past and clogged the cat, and that you're now running lean for some reason. A lazy O2 will usually run you rich and kill your gas mileage, but if you don't know how old it is, change it. They're usually tired by 50k miles. I'll agree. AC Delco O2 only, and either Delco or NGK plugs (NGK makes the delco'*).

The V-power plugs are great, and your mod list is very similar to mine. You're right on the edge between the TR55 and TR6. I'd start with the TR55, and move up to the TR6 next time if you need to. Make sure your plug wires get replaced at the same time. No Bosch!
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