Headers need tune?
08-08-2006, 10:58 PM
#1
2nd Gear Member
Thread Starter
Join Date: Feb 2005
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Posts: 345
Headers need tune?
I will soon be getting JBA longtube headers along with the off-road H-pipe. Other than the need for eliminating the check engine light due to not having the MIL eliminators, will I need another tune for my car?
Thanks
I already have a performance tune with an xcal 2 from brenspeed.
Thanks
I already have a performance tune with an xcal 2 from brenspeed.
08-08-2006, 11:47 PM
#2
5th Gear Member
Join Date: Mar 2006
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Posts: 2,544
RE: Headers need tune?
It's the same old story:
Do you NEED a tune? No. But, will you maximize your performance with one? Yes.
Call up Brent @ Brenspeed and let him know you got headers. He can send you an updated tune over Email at no charge.
Oh, and Gig 'em! I'm class of 01...
Do you NEED a tune? No. But, will you maximize your performance with one? Yes.
Call up Brent @ Brenspeed and let him know you got headers. He can send you an updated tune over Email at no charge.
Oh, and Gig 'em! I'm class of 01...
08-09-2006, 06:45 AM
#3
1st Gear Member
Join Date: Jun 2006
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Posts: 108
RE: Headers need tune?
Actually, with long tube headers, you WILL NEED a tune if you do not want to cause long term damage. In essence, the air fuel ratios will change (not much, but they will) with the long tubes and cause your car to run lean in your case. In other words, you will have too much air and not enough fuel in the combustion process. In addition to that, the tune will not only correct this, but you will be able to produce optimal gains with a tune.
08-09-2006, 03:01 PM
#4
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Join Date: Mar 2006
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RE: Headers need tune?
ORIGINAL: FastShadow
Actually, with long tube headers, you WILL NEED a tune if you do not want to cause long term damage. In essence, the air fuel ratios will change (not much, but they will) with the long tubes and cause your car to run lean in your case. In other words, you will have too much air and not enough fuel in the combustion process. In addition to that, the tune will not only correct this, but you will be able to produce optimal gains with a tune.
Actually, with long tube headers, you WILL NEED a tune if you do not want to cause long term damage. In essence, the air fuel ratios will change (not much, but they will) with the long tubes and cause your car to run lean in your case. In other words, you will have too much air and not enough fuel in the combustion process. In addition to that, the tune will not only correct this, but you will be able to produce optimal gains with a tune.
I do not think this is true. I mean, what you wrote makes sense, but the prevailing opinions from the expert tuners seem to contradict it:
Before I installed headers on my car I spent a while chatting with Doug @ Bamachips and Brent @ Brenspeed. Both of them said that a tune generally wasn't needed with longtubes and the car would run fine without it, but a custom tune could be made to maximize gains. Brent specifically said that sometimes he did't see any A/F ratio changes after installing a set of headers on a customer's car. (I suppose this depends on precisely what mods are on the motor). Keep in mind that the ECU does have some control through the MAF and O2 sensor.
...not my personal experience, just what I heard from the pros.....
08-09-2006, 08:18 PM
#6
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Join Date: Jun 2006
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Posts: 108
RE: Headers need tune?
ORIGINAL: CrazyAl
I do not think this is true. I mean, what you wrote makes sense, but the prevailing opinions from the expert tuners seem to contradict it:
Before I installed headers on my car I spent a while chatting with Doug @ Bamachips and Brent @ Brenspeed. Both of them said that a tune generally wasn't needed with longtubes and the car would run fine without it, but a custom tune could be made to maximize gains. Brent specifically said that sometimes he did't see any A/F ratio changes after installing a set of headers on a customer's car. (I suppose this depends on precisely what mods are on the motor). Keep in mind that the ECU does have some control through the MAF and O2 sensor.
...not my personal experience, just what I heard from the pros.....
ORIGINAL: FastShadow
Actually, with long tube headers, you WILL NEED a tune if you do not want to cause long term damage. In essence, the air fuel ratios will change (not much, but they will) with the long tubes and cause your car to run lean in your case. In other words, you will have too much air and not enough fuel in the combustion process. In addition to that, the tune will not only correct this, but you will be able to produce optimal gains with a tune.
Actually, with long tube headers, you WILL NEED a tune if you do not want to cause long term damage. In essence, the air fuel ratios will change (not much, but they will) with the long tubes and cause your car to run lean in your case. In other words, you will have too much air and not enough fuel in the combustion process. In addition to that, the tune will not only correct this, but you will be able to produce optimal gains with a tune.
I do not think this is true. I mean, what you wrote makes sense, but the prevailing opinions from the expert tuners seem to contradict it:
Before I installed headers on my car I spent a while chatting with Doug @ Bamachips and Brent @ Brenspeed. Both of them said that a tune generally wasn't needed with longtubes and the car would run fine without it, but a custom tune could be made to maximize gains. Brent specifically said that sometimes he did't see any A/F ratio changes after installing a set of headers on a customer's car. (I suppose this depends on precisely what mods are on the motor). Keep in mind that the ECU does have some control through the MAF and O2 sensor.
...not my personal experience, just what I heard from the pros.....
08-09-2006, 08:23 PM
#7
1st Gear Member
Join Date: May 2006
Location: the bilge of a boat!
Posts: 63
RE: Headers need tune?
ORIGINAL: CrazyAl
I do not think this is true. I mean, what you wrote makes sense, but the prevailing opinions from the expert tuners seem to contradict it:
Before I installed headers on my car I spent a while chatting with Doug @ Bamachips and Brent @ Brenspeed. Both of them said that a tune generally wasn't needed with longtubes and the car would run fine without it, but a custom tune could be made to maximize gains. Brent specifically said that sometimes he did't see any A/F ratio changes after installing a set of headers on a customer's car. (I suppose this depends on precisely what mods are on the motor). Keep in mind that the ECU does have some control through the MAF and O2 sensor.
...not my personal experience, just what I heard from the pros.....
ORIGINAL: FastShadow
Actually, with long tube headers, you WILL NEED a tune if you do not want to cause long term damage. In essence, the air fuel ratios will change (not much, but they will) with the long tubes and cause your car to run lean in your case. In other words, you will have too much air and not enough fuel in the combustion process. In addition to that, the tune will not only correct this, but you will be able to produce optimal gains with a tune.
Actually, with long tube headers, you WILL NEED a tune if you do not want to cause long term damage. In essence, the air fuel ratios will change (not much, but they will) with the long tubes and cause your car to run lean in your case. In other words, you will have too much air and not enough fuel in the combustion process. In addition to that, the tune will not only correct this, but you will be able to produce optimal gains with a tune.
I do not think this is true. I mean, what you wrote makes sense, but the prevailing opinions from the expert tuners seem to contradict it:
Before I installed headers on my car I spent a while chatting with Doug @ Bamachips and Brent @ Brenspeed. Both of them said that a tune generally wasn't needed with longtubes and the car would run fine without it, but a custom tune could be made to maximize gains. Brent specifically said that sometimes he did't see any A/F ratio changes after installing a set of headers on a customer's car. (I suppose this depends on precisely what mods are on the motor). Keep in mind that the ECU does have some control through the MAF and O2 sensor.
...not my personal experience, just what I heard from the pros.....
08-09-2006, 11:02 PM
#8
5th Gear Member
Join Date: Mar 2006
Location:
Posts: 2,544
RE: Headers need tune?
I completely agree that an updated tune is the right thing to do....that is exactly what I did on my car.
However, I have it from the professionals that it is not needed in the true sense of the word--at least on the S197. Remember that guys like Doug and Brent spend a good part of each day in front of the dyno and exhast gas analyzer. They know a heck of a lot more about this than I do (and I'm guessing you do--unless you happen to run a Mustang shop yourself).
However, I have it from the professionals that it is not needed in the true sense of the word--at least on the S197. Remember that guys like Doug and Brent spend a good part of each day in front of the dyno and exhast gas analyzer. They know a heck of a lot more about this than I do (and I'm guessing you do--unless you happen to run a Mustang shop yourself).
08-10-2006, 02:17 AM
#9
5th Gear Member
Join Date: Nov 2005
Location:
Posts: 3,235
RE: Headers need tune?
ORIGINAL: CrazyAl
I do not think this is true. I mean, what you wrote makes sense, but the prevailing opinions from the expert tuners seem to contradict it:
Before I installed headers on my car I spent a while chatting with Doug @ Bamachips and Brent @ Brenspeed. Both of them said that a tune generally wasn't needed with longtubes and the car would run fine without it, but a custom tune could be made to maximize gains. Brent specifically said that sometimes he did't see any A/F ratio changes after installing a set of headers on a customer's car. (I suppose this depends on precisely what mods are on the motor). Keep in mind that the ECU does have some control through the MAF and O2 sensor.
...not my personal experience, just what I heard from the pros.....
ORIGINAL: FastShadow
Actually, with long tube headers, you WILL NEED a tune if you do not want to cause long term damage. In essence, the air fuel ratios will change (not much, but they will) with the long tubes and cause your car to run lean in your case. In other words, you will have too much air and not enough fuel in the combustion process. In addition to that, the tune will not only correct this, but you will be able to produce optimal gains with a tune.
Actually, with long tube headers, you WILL NEED a tune if you do not want to cause long term damage. In essence, the air fuel ratios will change (not much, but they will) with the long tubes and cause your car to run lean in your case. In other words, you will have too much air and not enough fuel in the combustion process. In addition to that, the tune will not only correct this, but you will be able to produce optimal gains with a tune.
I do not think this is true. I mean, what you wrote makes sense, but the prevailing opinions from the expert tuners seem to contradict it:
Before I installed headers on my car I spent a while chatting with Doug @ Bamachips and Brent @ Brenspeed. Both of them said that a tune generally wasn't needed with longtubes and the car would run fine without it, but a custom tune could be made to maximize gains. Brent specifically said that sometimes he did't see any A/F ratio changes after installing a set of headers on a customer's car. (I suppose this depends on precisely what mods are on the motor). Keep in mind that the ECU does have some control through the MAF and O2 sensor.
...not my personal experience, just what I heard from the pros.....
Excellent points, and since this is after the combustion process not before it makes sense that the AF wouldn't change much. I spoke with my guy at Logan Motorsports and he said if I added Kooks LT's with off road pipe then I would need to retune. I need to speak to Doug again, I trust him.
