D series exhaust question! need help!
#1
Registered!!
Thread Starter
Join Date: Feb 2019
Age: 24
Posts: 4
Likes: 0
Received 0 Likes
on
0 Posts
Rep Power: 0 D series exhaust question! need help!
My buddy has a 2000 civic with an aftermarket header, one side of the exhaust was damaged and he cut it out basically straight pipe which the other pipe continues out the back through the muffler. He was worried about o2 sensor problems or if this would affect the engine negatively since two pistons basically are free flowing while two are connected normally and exit through the muffler. Would this cause any issues if he keeps it this way since the cars exhaust note has improved and sounds like a sweet old style two cylinder car. To visually see what has been done to modify the exhaust I have a attached an extremely well drawn diagram of the headers coming from the engine. The normal pipe flowing to the muffler has a o2 sensor but since the other was cut it cant reach the o2 sensor under the car.
#2
If you think a good mechanic is expensive, try hiring a bad one
Re: D series exhaust question! need help!
since the cars exhaust note has improved and sounds like a sweet old style two cylinder car
Tell dude don't be that guy. Fix it right.
#3
Registered!!
Thread Starter
Join Date: Feb 2019
Age: 24
Posts: 4
Likes: 0
Received 0 Likes
on
0 Posts
Rep Power: 0 Re: D series exhaust question! need help!
Thanks for answering my question and including your own opinion! It didnt really help with the original question i asked :/ ill pass on the information hes already looking into either a new pipe or brand new exhaust all together its just a bit of fun
#4
PITA Admin
Administrator
iTrader: (1)
Join Date: Dec 2008
Location: TN
Age: 52
Posts: 14,781
Received 1,440 Likes
on
1,196 Posts
Rep Power: 338 Re: D series exhaust question! need help!
it's not a performance improvement, rather a torque loss at mid-low RPM.
And an excuse for the neighbors to shoot him.
your friend won't be able to find where the shot came from, for the exhaust will baffle the shot noise.
And an excuse for the neighbors to shoot him.
your friend won't be able to find where the shot came from, for the exhaust will baffle the shot noise.
#5
If you think a good mechanic is expensive, try hiring a bad one
Re: D series exhaust question! need help!
Air leaks in the exhaust can skew O2 sensor readings, then the ECM can't accurately calculate the correct fuel injection quantity
Torque loss as mentioned
After shutoff......when cold air hits the thin little 800+ degree exhaust valves, they could become warped due to thermal shock, then leak or burn
There's a huge difference between loud exhaust that sounds good and broken exhaust that is just loud and obnoxious....People aren't staring at the car because it sounds good.
#6
Registered!!
Thread Starter
Join Date: Feb 2019
Age: 24
Posts: 4
Likes: 0
Received 0 Likes
on
0 Posts
Rep Power: 0 Re: D series exhaust question! need help!
Okay. Thought of a couple serious drawbacks
Air leaks in the exhaust can skew O2 sensor readings, then the ECM can't accurately calculate the correct fuel injection quantity
Torque loss as mentioned
After shutoff......when cold air hits the thin little 800+ degree exhaust valves, they could become warped due to thermal shock, then leak or burn
There's a huge difference between loud exhaust that sounds good and broken exhaust that is just loud and obnoxious....People aren't staring at the car because it sounds good.
Air leaks in the exhaust can skew O2 sensor readings, then the ECM can't accurately calculate the correct fuel injection quantity
Torque loss as mentioned
After shutoff......when cold air hits the thin little 800+ degree exhaust valves, they could become warped due to thermal shock, then leak or burn
There's a huge difference between loud exhaust that sounds good and broken exhaust that is just loud and obnoxious....People aren't staring at the car because it sounds good.
thank you so much for giving a legit answer since having the car even idle he was unsure if there would be negatives to the engine and wanted to make sure and went to the forums for guidance.
#7
Registered!!
Thread Starter
Join Date: Feb 2019
Age: 24
Posts: 4
Likes: 0
Received 0 Likes
on
0 Posts
Rep Power: 0 Re: D series exhaust question! need help!
haha yea definitely NOT a "performance" upgrade lol not for a second did we think this would be beneficial to performance. Should've added more detail when i asked the question. I didnt mean the word "modify" as in he modified to stay this way just for ***** hes fabricating a new piece of pipe to fit that hole just before hes actually fitted the pipe wanted to see what this weird exhaust setup would sound like basically muffling two cylinders. Thank you for the feedback car will be back to quiet tomorrow since civics sound like hot garbage
Thread
Thread Starter
Honda Civic Forum
Replies
Last Post
oldcar2
Mechanical Problems/Vehicle Issues and Fix-it Forum
2
08-16-2011 08:40 PM