perfomance exhaust question
12-22-2004, 10:30 PM
#42
Three Wheelin'
Join Date: Nov 2003
Location: NJ
Age: 63
Posts: 1,821
Likes: 0
Received 0 Likes
on
0 Posts
the thing about the exhaust.
header > catalytic converter > catback exhaust.
the cat is the bottleneck.
so until u change the cat...the exhaust mod is reduced...
right?...Lawaia?...
but my point is...it's not free flow until the cat is replaced...
so one wouldn't really have to worry about retuning/burnt valves...yet still get some gains.
i'm so damn smart...
header > catalytic converter > catback exhaust.
the cat is the bottleneck.
so until u change the cat...the exhaust mod is reduced...
right?...Lawaia?...
but my point is...it's not free flow until the cat is replaced...
so one wouldn't really have to worry about retuning/burnt valves...yet still get some gains.
i'm so damn smart...
12-23-2004, 04:09 AM
#43
08 WDP TL-S
Originally Posted by DerrickM
So, what are people spending for headers? I assume you have to replace the single pipe that goes back to the split for the two mufflers too?
I'd like to add some horsepower to my 2001 TL, but don't want to spend a ton of money...
I'd like to add some horsepower to my 2001 TL, but don't want to spend a ton of money...
same as the TL-S?
12-23-2004, 10:42 AM
#44
Three Wheelin'
Join Date: Jul 2001
Location: Vancouver, BC
Posts: 1,876
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by Lawaia
There are pros and cons to running a free-flow exhaust system, which also includes headers, hi-flow cats and cat-back exhaust system. Free-up the exhaust will reduce your torque and bottom end, but will give you better top-end performance. Also, if the computer cannot adjust for the drastic reduction of back pressure you run the chance of running the fuel mixture too lean which can cause burnt valves. (That's the damage your engine part)
12-23-2004, 06:47 PM
#45
Moderator Alumnus
Clarification guys....
In no way am I suggesting that headers WILL cause internal damage to the engine. My original post stated that "IF the computer cannot compensate for the reduced back-pressure" there is a potential for running too lean, and not necessarily with only a header install but with a trio of replacmenets which would include heades, free flow cats and exhaust. I don't know if the computer can compensate...if it can then there should be no problems.
Remember that there are many variables that need to be considered when doing engine modifications. Every component needs to be designed to work with one another in order to yield favorable results.
In no way am I suggesting that headers WILL cause internal damage to the engine. My original post stated that "IF the computer cannot compensate for the reduced back-pressure" there is a potential for running too lean, and not necessarily with only a header install but with a trio of replacmenets which would include heades, free flow cats and exhaust. I don't know if the computer can compensate...if it can then there should be no problems.
Remember that there are many variables that need to be considered when doing engine modifications. Every component needs to be designed to work with one another in order to yield favorable results.
Thread
Thread Starter
Forum
Replies
Last Post
IIDXholic
Car Parts for Sale
23
10-08-2015 07:53 AM
Billu99tl
3G TL Problems & Fixes
1
09-13-2015 11:30 AM
Hau_nguyen91
3G TL Performance Parts & Modifications
10
09-06-2015 12:53 PM
