3vze complete exhaust
#281
Registered User
Nice man. I have stop reading at around page 5. I want to see how your mileage gone so far. Did you have the time to change your 02? I would like to see the mileage after you replace the 02... What scared me is that the smog guy will not except your header to do the emission test... Some will not test it if it is not the original. Some will and hopefully it pass.
Last edited by Guardian_Saint; 03-26-2010 at 05:54 PM.
#282
Registered User
Thread Starter
As promised, I told everyone I'd get some videos of my stock catalytic converter on with my exhaust set up... here they are. Hope you all are as satisfied as I am haha
http://www.youtube.com/watch?v=vzW5uCAfC70
http://www.youtube.com/watch?v=XHtdnn0v5GQ
http://www.youtube.com/watch?v=sNTlehcocfs
http://www.youtube.com/watch?v=vzW5uCAfC70
http://www.youtube.com/watch?v=XHtdnn0v5GQ
http://www.youtube.com/watch?v=sNTlehcocfs
#283
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Thread Starter
Nice man. I have stop reading at around page 5. I want to see how your mileage gone so far. Did you have the time to change your 02? I would like to see the mileage after you replace the 02... What scared me is that the smog guy will not except your header to do the emission test... Some will not test it if it is not the original. Some will and hopefully it pass.
#284
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Join Date: Dec 2009
Location: Minnesota, USA
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Guardian Saint - What a nightmare emissions must be. I suggest moving to a different state These trucks are guaranteed more fun after the performance upgrades. It was a little depressing mashing around a 98 Eldorado Northstar and then adding a badass runner to the collection only to find out how slow (stock) these things really are. Depending on how mechanically inclined you want to be; I'm confident that after you pass your next emissions and do performance upgrades, you will be thoroughly satisfied, even if it means reverting back to stock headers/intake at next emissions.
Best,
Ben
Best,
Ben
#285
Registered User
Thread Starter
lol theres no possible way for me to convert back to stock emissions... theres no possible way to install the crossover without taking out the motor. besides, I had to cut mine out.
#287
Registered User
Thread Starter
lol it sounds the same... except its not as loud. I dont think you understand the fine if i get caught without a catalytic converter... lmao my truck gets impounded, dude. then after that I get an impound fee, and a ticket, that i need to take to court, so i would have to pay the impound fee, the ticket, and the court fees... I dont know exactly how much it would be, but it would be in the thousands dollar range.
#288
Registered User
lol its funny how before you didnt care and now your so by the book lmao but i hear you dude, but i said highflow cat? so you can be legal and still have flow and smallblock/ ferarri sound lol i miss that sound that thing made
#289
Registered User
Thread Starter
lol it was more of an experimental thing. im not buying a highflow cat either... you have any idea how much they are...?
#290
Registered User
lol it was cool . didnt you say they were like 800 or something? i would just buy a toasted cat from a junker for like 30 bucks and gut it? there you go, looks legit but has flow and if a cop suspects its tampered with just go home and put in your good cat then go and let em check it out? idk dude thats just what i would do lol
#291
Registered User
Thread Starter
lol you do understand if i DONT pass smog I cant drive my truck? lol a gutted cat will not pass smog... if I dont have a catalytic converter, my o2 sensor will eat it...
a high flow catalytic converter is like 400 bucks... one that will pass smog, anyway.
a high flow catalytic converter is like 400 bucks... one that will pass smog, anyway.
#292
Registered User
omfg mike you clown lol obvs put the good cat on for smog DUHHHHH then put the gutted one on after its passed??????? lol and 400 aint bad but i wouldnt buy one, just gut a old cat for DD and keep you good cat for evey couple years or whatever it is for SMOG. make sense?
#293
Registered User
Thread Starter
Omfg jason you clown. lol obvs if i get it smogged and take the cat off i'll have to replace the O2 sensor again in 2 years. do you know how much o2 sensors are?
#294
Registered User
Mak,
Why does your truck eat the O2 sensor with no cat? My cat checked out a couple of weeks ago, pulled in my driveway and it sounded like someone was shaking a box of rocks under the truck.
I took it to the exhaust dude and he said "you got two choices... 1) I can sell you a new catalytic converter and replace what you got for about $125 with a magnaflow universal, OR 2) I can cut that faulty cat out and weld in a pipe for $40. He specifically noted that the O2 sensor is before the cat so it will not hurt a thing.
So far after a couple of weeks of driving, no CEL's no adverse effects at all... just improved mpg. Why is your's eating O2 sensors with no cat? Is it the combination of no cat with headers?
Why does your truck eat the O2 sensor with no cat? My cat checked out a couple of weeks ago, pulled in my driveway and it sounded like someone was shaking a box of rocks under the truck.
I took it to the exhaust dude and he said "you got two choices... 1) I can sell you a new catalytic converter and replace what you got for about $125 with a magnaflow universal, OR 2) I can cut that faulty cat out and weld in a pipe for $40. He specifically noted that the O2 sensor is before the cat so it will not hurt a thing.
So far after a couple of weeks of driving, no CEL's no adverse effects at all... just improved mpg. Why is your's eating O2 sensors with no cat? Is it the combination of no cat with headers?
Last edited by Wrenchinjoe; 03-31-2010 at 10:22 AM.
#295
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Join Date: Feb 2007
Location: Sierra Nevada's or the Deserts of Las Vegas
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Mak,
Why does your truck eat the O2 sensor with no cat? My cat checked out a couple of weeks ago, pulled in my driveway and it sounded like someone was shaking a box of rocks under the truck.
I took it to the exhaust dude and he said "you got two choices... 1) I can sell you a new catalytic converter and replace what you got for about $125 with a magnaflow universal, OR 2) I can cut that faulty cat out and weld in a pipe for $40. He specifically noted that the O2 sensor is before the cat so it will not hurt a thing.
So far after a couple of weeks of driving, no CEL's no adverse effects at all... just improved mpg. Why is your's eating O2 sensors with no cat? Is it the combination of no cat with headers?
Why does your truck eat the O2 sensor with no cat? My cat checked out a couple of weeks ago, pulled in my driveway and it sounded like someone was shaking a box of rocks under the truck.
I took it to the exhaust dude and he said "you got two choices... 1) I can sell you a new catalytic converter and replace what you got for about $125 with a magnaflow universal, OR 2) I can cut that faulty cat out and weld in a pipe for $40. He specifically noted that the O2 sensor is before the cat so it will not hurt a thing.
So far after a couple of weeks of driving, no CEL's no adverse effects at all... just improved mpg. Why is your's eating O2 sensors with no cat? Is it the combination of no cat with headers?
#296
Registered User
Thread Starter
my CEL comes on periodically, also my truck only has a pre cat o2 sensor. its 92. the only vehicles i've seen with 2+ o2s is 95+ years. due to putting headers on, my truck now has a new O2 sensor location, which is at the Y - pipe. Is there anyway to tune the O2 sensor to the new temperature that it gets so that the CEL stops coming on? instead of being on the downpipe like it is on stock vehicles, mine is on the Y pipe, right under the driver's seat.
#297
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my CEL comes on periodically, also my truck only has a pre cat o2 sensor. its 92. the only vehicles i've seen with 2+ o2s is 95+ years. due to putting headers on, my truck now has a new O2 sensor location, which is at the Y - pipe. Is there anyway to tune the O2 sensor to the new temperature that it gets so that the CEL stops coming on? instead of being on the downpipe like it is on stock vehicles, mine is on the Y pipe, right under the driver's seat.
#298
Registered User
Interesting. My O2 sensor is right in front of the cat and thus roughly right under the driver's seat already in the stock setup. I wonder if I am going to have the same issue when I install headers. In Tennessee you don't have to have a cat, so I was planing to go straight from the Thorley Y-pipe O2 bung back to a Flowmaster 50 and out. I'll let you know how it turns out and whether it generates CEL's when I get'r'dun.
#299
Registered User
Mine too is under the drivers seat on the down pipe. The idea that running with out a cat will kill a pre cat O2 sensor is not correct.
You can get magnaflow high flow cats for $90 that will pass smog (we have the same dyno smog test here) and I have passed with no problems.
You can get magnaflow high flow cats for $90 that will pass smog (we have the same dyno smog test here) and I have passed with no problems.