Headers
!LS1 11 Second Club
Joined: Apr 2003
Posts: 7,133
Likes: 2
From: Miami
Originally Posted by SSmith
I'm going to chime in. So you think you need headers!
1. You have cats...meow.
2. GM engineers tuned your car to run with your factory exhaust manifolds and your cats...meow.
3. You will need to relocate (move back) the cats. (Can't spell catilatic converters)..meow. This is against the law...in some states...but who cares..really....I don't.
4. If I was to put tuned long tube headers on my car. I would want it to be as close to factory emmisions clean as I could get it.
Anybody ever dyno tuned their car after installing headers and high flow cats?
Will your oxygen sensor burn out faster with headers...this will effect MPG.
1. You have cats...meow.
2. GM engineers tuned your car to run with your factory exhaust manifolds and your cats...meow.
3. You will need to relocate (move back) the cats. (Can't spell catilatic converters)..meow. This is against the law...in some states...but who cares..really....I don't.
4. If I was to put tuned long tube headers on my car. I would want it to be as close to factory emmisions clean as I could get it.
Anybody ever dyno tuned their car after installing headers and high flow cats?
Will your oxygen sensor burn out faster with headers...this will effect MPG.
1. Meow this.
2. !factory exhaust manifolds !cats
3. !
4. Stand behind my car and take a whiff.
O2 sensors are easily replaced. MPG? What's that?
Welcome.
On The Tree
Joined: Nov 2002
Posts: 130
Likes: 2
From: Lee's Summit, MO
I bought the SLP Y-pipe for the lower exhaust note. Everybody has their own dreams and wants for their car. Playing around with your emmisons can lead to shitty gas mileage. I have seen 28.5 MPG on mine as is....Oh and before you flame me about I should have bought a Honda if I wanted gas mileage...my daily driver is a 2004 VW Passat TDI Diesel 39 MPG highway. 
Launching!
Joined: Sep 2004
Posts: 246
Likes: 0
Originally Posted by SSmith
I bought the SLP Y-pipe for the lower exhaust note. Everybody has their own dreams and wants for their car. Playing around with your emmisons can lead to shitty gas mileage. I have seen 28.5 MPG on mine as is....Oh and before you flame me about I should have bought a Honda if I wanted gas mileage...my daily driver is a 2004 VW Passat TDI Diesel 39 MPG highway.
TECH Resident
Joined: Feb 2003
Posts: 827
Likes: 0
From: Dallas, TX
There are drawbacks.
You will hear more valvetrain noise....guaranteed. EASY possibility of exhaust leak somewhere in the Y-pipe. A lot of guys have Y-pipe banging problems. If you go True Duals most will be very low to the ground.
I love my headers and would do them again but to say there are no drawbacks is wrong. My 2 cents.
You will hear more valvetrain noise....guaranteed. EASY possibility of exhaust leak somewhere in the Y-pipe. A lot of guys have Y-pipe banging problems. If you go True Duals most will be very low to the ground.
I love my headers and would do them again but to say there are no drawbacks is wrong. My 2 cents.
Originally Posted by Slammed-am
Is a tune on headers neccesary or beneficial?
How much should I expect to pay to get a tune for just the headers?
Does anybody here run their headers untuned?
How much should I expect to pay to get a tune for just the headers?
Does anybody here run their headers untuned?
Theres tons of guys with headers untuned-a tune after ANY mod is beneficial its nto necessary but it will ALWAYS help-the tune after headers is about the same as ANY tune lol really makes no difference...they really just play with your A/F ratio and mayb some timing? if you have an auto they may remove torque management, to frim up shift points and such-
all in all a TUNE IS VERY AFFECTIVE!
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Launching!
Joined: Feb 2005
Posts: 272
Likes: 0
From: Southern California
Originally Posted by Dear John
Get ready for some amplified valvetrain noise and a much louder WOT! 
I love you Mikey.
I love you Mikey.
On The Tree
Joined: May 2004
Posts: 191
Likes: 0
From: PA
if you have an auto they may remove torque management, to frim up shift points and such-
I love the exhaust note and it pulls really hard in the upper RPMs. Definetly worth buying. Also for emissions ask a few shops that do inspections to see if it will pass the visual.
