Hydrocarbon Trap
1/27/05, 08:00 AM
#5
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1/27/05, 08:04 AM
#7
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Originally posted by 38special@January 27, 2005, 9:03 AM
Very easy to put back.
No problems. 5500 miles on my car and half of them have no HC trap.
Very easy to put back.
No problems. 5500 miles on my car and half of them have no HC trap.
4/3/05, 11:44 PM
#9
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after reading about the HC trap over and over and after worrying about impacting the car in some negative way, I finally decided to remove it .
The two things I noticed afterwards was that the car revd higher at cold start and didnt seem to run as smoothly... as it warmed up and the rpms came down there was slight up and down reving with the rpms.. bouncing between 750-1000 rpms, not much but it was definately there after removing it. Once the car warmed up it smoothed out somewhat. Up and down idle around 750-900 rpms
I restarted the car several times after letting it run - and reving the motor up to 3000 rpms for about 10 - 15 seconds and then let it idle for about 5 min and did it again- went through the same procedure several times - car seem to even out after the 4th restart. Not sure what impact if any this is having on the airflow sensors...anyway I have to admit that Im Still pretty nervous about removing it... hopefully there are no long term affects that may come up later.
The two things I noticed afterwards was that the car revd higher at cold start and didnt seem to run as smoothly... as it warmed up and the rpms came down there was slight up and down reving with the rpms.. bouncing between 750-1000 rpms, not much but it was definately there after removing it. Once the car warmed up it smoothed out somewhat. Up and down idle around 750-900 rpms
I restarted the car several times after letting it run - and reving the motor up to 3000 rpms for about 10 - 15 seconds and then let it idle for about 5 min and did it again- went through the same procedure several times - car seem to even out after the 4th restart. Not sure what impact if any this is having on the airflow sensors...anyway I have to admit that Im Still pretty nervous about removing it... hopefully there are no long term affects that may come up later.
4/4/05, 08:58 AM
#10
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I wouldnt take any parts off or replace with mods until you are ready to reflash computer with custom tune from dyno. Anything you do, will be adjusted by computer if you dont reflash. Or may run too lean. Supposedly if you dont flash your not getting anything from it anyway as computer is so sensitive to these changes it trys to adjust for it. Just my thoughts.
4/4/05, 09:36 AM
#12
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Originally posted by Shea@January 27, 2005, 9:03 AM
Search first, noob. Where's Grantsdale.
http://forums.bradbarnett.net/index.php?sh...1&st=&p=&#entry
http://forums.bradbarnett.net/index.php?sh...&hl=hydrocarbon
http://forums.bradbarnett.net/index.php?sh...&hl=hydrocarbon
Search first, noob. Where's Grantsdale.
http://forums.bradbarnett.net/index.php?sh...1&st=&p=&#entry
http://forums.bradbarnett.net/index.php?sh...&hl=hydrocarbon
http://forums.bradbarnett.net/index.php?sh...&hl=hydrocarbon
4/4/05, 11:54 AM
#16
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MINE'S SITTING ON A SHELF COLLECTING DUST. I'll put it back in when I need to take my car in for an inspection. Other than that I have no worries about removing it. I haven't noticed any increased levels in rpm's at idle or otherwise. IMO the thing appears to restrict airflow. I disconnected the battery after I removed it to reset the computer.
4/4/05, 12:56 PM
#17
How in the world can it void your warranty? It is only for emissions people and nothing else and the only time it actually does anything is when you turn your car off. It stops harmful emissions from escaping from the intake manifold. That is it. No harm in removing it, well, only harm to the environment but when you factor in how many cars are built that do not have an HC trap, removing yours is not going to kill the earth anytime sooner.
Mine has been out for over 11,000 kilometers, no issues and never will be any.
Mine has been out for over 11,000 kilometers, no issues and never will be any.
4/4/05, 01:05 PM
#18
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I dont really expect any issues related to removing the HC trap after reading the reports about the HC trap technology and how it works.
In fact I doubt seriously that it would affect an emissions test - since its for cold starts only and you always want your car warmed up before getting your emissions test.
Anyway so far - since last nite - Idling has smoothed perfectly out no problems at all. I have noticed a difference in exhaust tone a bit deeper growling sound, In fact my wife pointed it out to me, she has a good ear for tones, and I think I have noticed a very slight change for the better in acceleration when I get on it..could be imagining it... not sure..
In fact I doubt seriously that it would affect an emissions test - since its for cold starts only and you always want your car warmed up before getting your emissions test.
Anyway so far - since last nite - Idling has smoothed perfectly out no problems at all. I have noticed a difference in exhaust tone a bit deeper growling sound, In fact my wife pointed it out to me, she has a good ear for tones, and I think I have noticed a very slight change for the better in acceleration when I get on it..could be imagining it... not sure..
4/4/05, 01:45 PM
#19
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Originally posted by adrenalin@April 4, 2005, 11:59 AM
No harm in removing it, well, only harm to the environment but when you factor in how many cars are built that do not have an HC trap, removing yours is not going to kill the earth anytime sooner.
No harm in removing it, well, only harm to the environment but when you factor in how many cars are built that do not have an HC trap, removing yours is not going to kill the earth anytime sooner.
A Canadian said that!
4/9/05, 02:15 PM
#20
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Just removed my HC trap in the parking lot of Home Depot (Had to buy some pliers) and took it out for a drive on the interstate. I still idle perfectly fine at 750. However it seems like the RPMs are a bit higher through out all of the gears. I used to be at 3000 RPM at 60 MPH in 3rd gear, now I am at 3000 RPM at about 57 MPH in 3rd gear.