Boss intake manifold and the evil of emissions
Thread Starter
Cobra R Member
Joined: September 22, 2012
Posts: 1,690
Likes: 17
From: Ontario, California
Boss intake manifold and the evil of emissions
I am considering the boss intake manifold. I've tried searching everywhere to find out if my car will pass smog in California with this mod. I know many people will say just swap it back when the time comes for a smog check. I'm tired of doing that. I've done It in the past with other cars and it just annoys me. I'd rather just change a part and leave it on. I am hoping someone here knows about this.
Bullitt Member
Joined: March 29, 2015
Posts: 352
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From: So. Cal
Mr. V , good question, unfortunately I don't have an answer. As a fellow goldenstater held captive by the powers that be, I would like to know as well. Did'nt the boss 302 come 50 state emissions legal from the factory?
Thread Starter
Cobra R Member
Joined: September 22, 2012
Posts: 1,690
Likes: 17
From: Ontario, California
Boss intake manifold and the evil of emissions
Originally Posted by BackroadGT
Mr. V , good question, unfortunately I don't have an answer. As a fellow goldenstater held captive by the powers that be, I would like to know as well. Did'nt the boss 302 come 50 state emissions legal from the factory?
Cobra Member
Joined: April 14, 2011
Posts: 1,072
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From: NJ. Waiting for our Gov. to be held accountable for his actions>>>Jersey Broke
https://fordperformanceracingparts.c...ontactfrpp.asp
Thread Starter
Cobra R Member
Joined: September 22, 2012
Posts: 1,690
Likes: 17
From: Ontario, California
Boss intake manifold and the evil of emissions
Originally Posted by boss man
Yes it's legal. Just like Track Key is legal. This is what killed the orginal lopy idle and why it took many months for Boss owners to be able to get track key. Call Ford Racing for the best answer.
https://fordperformanceracingparts.c...ontactfrpp.asp
https://fordperformanceracingparts.c...ontactfrpp.asp
Bullitt Member
Joined: March 29, 2015
Posts: 352
Likes: 13
From: So. Cal
Is that because the intake is not a factory part on the GT? Or are the cats different on the boss 302?
Thread Starter
Cobra R Member
Joined: September 22, 2012
Posts: 1,690
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From: Ontario, California
Boss intake manifold and the evil of emissions
Originally Posted by BackroadGT
Is that because the intake is not a factory part on the GT? Or are the cats different on the boss 302?
Bullitt Member
Joined: October 6, 2011
Posts: 293
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I was also going to say, just because they say it's not legal does not mean it wont pass. I don't see why you could not just have a "Smog" tune that you spend 5min loading into the car before testing to ensure you pass.
Where there is a will, there is a way!
GT Member
Joined: May 30, 2012
Posts: 197
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From: Houston, Tx
Boss intake manifold and the evil of emissions
Originally Posted by ConeBoss
I was also going to say, just because they say it's not legal does not mean it wont pass. I don't see why you could not just have a "Smog" tune that you spend 5min loading into the car before testing to ensure you pass.
Where there is a will, there is a way!
Where there is a will, there is a way!
Thread Starter
Cobra R Member
Joined: September 22, 2012
Posts: 1,690
Likes: 17
From: Ontario, California
Boss intake manifold and the evil of emissions
California has a visual inspection component to the smog test. You can pass the tail pipe portion and be failed based on visual. They look under the hood and if anything is modified, you fail. I'm not sure if most smog techs would know what the intake manifold should look like. I'm afraid I'd fail the visual and half to put the old intake manifold back on.
GT Member
Joined: September 9, 2013
Posts: 111
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Should and will pass just fine. Its an OEM part. When installed correctly, with all the supporting lines installed correctly, it should pass. You are not changing the wet fuel flow path, simply the air. I've been running my Boss on my GT for ~10k mi and never tripped a check engine or wrench light... 100% stock drivability.
Shelby GT350 Member
Joined: May 18, 2010
Posts: 2,318
Likes: 15
From: CT
Can I just throw a wrench into the equasion here??
Why do you want the Boss manifold? Unless something has changed in the past year or so, the conventional wisdom was that unless you had a built bottom end that could take advantage of ~7500 RPM, the Boss manifold is only going to slow you down.
Remember that the Boss has different rods, pistons crank(?) valuetrain, etc. that allow the motor to rev higher and benefit from that intake.
Just playing the devil's advocate...
Why do you want the Boss manifold? Unless something has changed in the past year or so, the conventional wisdom was that unless you had a built bottom end that could take advantage of ~7500 RPM, the Boss manifold is only going to slow you down.
Remember that the Boss has different rods, pistons crank(?) valuetrain, etc. that allow the motor to rev higher and benefit from that intake.
Just playing the devil's advocate...
Legacy TMS Member
Joined: October 8, 2005
Posts: 12,395
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From: Medina county, OH
Boss intake manifold and the evil of emissions
It won't slow you down with the right tune you'll see nice gains above 5500 rpm. The problem is when people that think it will make their car fly with just bolting it on with a canned tune.
Thread Starter
Cobra R Member
Joined: September 22, 2012
Posts: 1,690
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From: Ontario, California
Boss intake manifold and the evil of emissions
Originally Posted by MRGTX
Can I just throw a wrench into the equasion here??
Why do you want the Boss manifold? Unless something has changed in the past year or so, the conventional wisdom was that unless you had a built bottom end that could take advantage of ~7500 RPM, the Boss manifold is only going to slow you down.
Remember that the Boss has different rods, pistons crank(?) valuetrain, etc. that allow the motor to rev higher and benefit from that intake.
Just playing the devil's advocate...
Why do you want the Boss manifold? Unless something has changed in the past year or so, the conventional wisdom was that unless you had a built bottom end that could take advantage of ~7500 RPM, the Boss manifold is only going to slow you down.
Remember that the Boss has different rods, pistons crank(?) valuetrain, etc. that allow the motor to rev higher and benefit from that intake.
Just playing the devil's advocate...
GT Member
Joined: September 9, 2013
Posts: 111
Likes: 0
Can I just throw a wrench into the equasion here??
Why do you want the Boss manifold? Unless something has changed in the past year or so, the conventional wisdom was that unless you had a built bottom end that could take advantage of ~7500 RPM, the Boss manifold is only going to slow you down.
Remember that the Boss has different rods, pistons crank(?) valuetrain, etc. that allow the motor to rev higher and benefit from that intake.
Just playing the devil's advocate...
Why do you want the Boss manifold? Unless something has changed in the past year or so, the conventional wisdom was that unless you had a built bottom end that could take advantage of ~7500 RPM, the Boss manifold is only going to slow you down.
Remember that the Boss has different rods, pistons crank(?) valuetrain, etc. that allow the motor to rev higher and benefit from that intake.
Just playing the devil's advocate...
This is because most people just parrot what others say, with no firsthand experience. It's quicker even with the miserable stock gears and converter. ET was ~ the same as stock manifold but mph was 2-3+ The car for sure makes MORE HP with it as evidenced by the higher mph (all else the same)
-Must retune and rev the motor harder than stock (I've had no issues) to make use of it.
-Must port it and clean it up. Mine was from the get go and have no experience with an "out of the box" stock one.
-Better if you have a better matching TB and intake tract.
-WAYYY better to have some gear + converter, Or ALOT of one if not the other
V6 Member
Joined: August 26, 2014
Posts: 97
Likes: 0
From: USA
I am considering the boss intake manifold. I've tried searching everywhere to find out if my car will pass smog in California with this mod. I know many people will say just swap it back when the time comes for a smog check. I'm tired of doing that. I've done It in the past with other cars and it just annoys me. I'd rather just change a part and leave it on. I am hoping someone here knows about this.
