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02GTKB

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I personally feel they are worth it "if" you are planning on turning up the power. Like someone already stated they allow 2psi drop because of the stock restriction. LTs with a O/R X or H will for sure give a decent gain and they sound great I think. I run Kooks LTs with O/R H and Corsa Axles on my '14. People know I am coming lol.
 

Robert M

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I personally feel they are worth it "if" you are planning on turning up the power. Like someone already stated they allow 2psi drop because of the stock restriction. LTs with a O/R X or H will for sure give a decent gain and they sound great I think. I run Kooks LTs with O/R H and Corsa Axles on my '14. People know I am coming lol.

Your PSI comment raises another question..........Could a 10% lower be added to regain some of that PSI lost from a larger exhaust install? OR is that just spinning the blower faster with no gain?

When I installed my full 3", I do feel that I lost some low end torque, but the engine seems to pull much more freely through the RPM range.

R
 

Harry08

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If the EGR is in the factory location and operating, O2 sensors in place and in the stock location and cats are installed and working correctly what is the issue? Even a visual check under the car would look normal with the factory cats in place and no problems with the OBD. Unless the tech was a 'car guy' no one should know.
 

Robert M

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If the EGR is in the factory location and operating, O2 sensors in place and in the stock location and cats are installed and working correctly what is the issue? Even a visual check under the car would look normal with the factory cats in place and no problems with the OBD. Unless the tech was a 'car guy' no one should know.

I would guess that the issue would be that the CA regulation(s) would be violated. That is probably why they do a visual before the sniffer is connected. Apparently it doesn't matter if the sniffer says "pass" if items are altered that do not meet emissions certs., otherwise they would do the sniff first and if it passes, nothing else would matter.

R
 

Harry08

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California is quite sad in the fact that the only thing that has changed is the pipe. Everything else is installed in exactly the same location and is operating exactly as Ford intended it to including meeting all of the EPA regulations mandated at the time the vehicle was manufactured.
 

Robert M

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California is quite sad in the fact that the only thing that has changed is the pipe. Everything else is installed in exactly the same location and is operating exactly as Ford intended it to including meeting all of the EPA regulations mandated at the time the vehicle was manufactured.

I know, I have heard car owners complain for years. Yes it is an "California EPA thing" but there is also much money that has to be handed over to them for "CARB EO certification(s).

I remember the CA specific cars from back in the mid 1960's, I believe it was 1968, CA cars had A.I.R. pumps and closed PCV systems, the other 49 states did not, then came catalytic converters, then separate CA specific computer tunes........the list goes on and on. In reality, we are sooooo far ahead of the rest of the world in lesser exhaust emissions, there is nothing to talk about related to the US and climate change from automobile emissions.

I have not researched CARB standards, but I believe other states are slowly adapting them.

R
 
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da5deuce

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Dont know what state you're in but I'm in California and haven't had any problems with the police, or sound(in which I LOVE), or passing smog. Are longtubes worth it? Hell yea! Adds power, and the sound is beautiful, but that's more of a personal preference. I have American racing headers with offroad H pipe on my 08 GT500 by the way.

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Robert M

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Other owners have not been as lucky as you, I have read many threads related to this. The American Racing description below doesn't mention "Green".......which is usually an indicator that they have passed some sort of emissions testing and gained some sort of certification.....

-------------------------------------------------------------------------------------------
ARH rules the roost with GT500 systems up to 2” and a X-Pipe to give you the muscle car sound and power your Mustang needs.

Product features on ALL American Racing Headers systems include:

  • 100% Made in the USA - Never Outsourced
  • Made entirely of 304 stainless steel
  • 3/8" thick laser-cut flanges for a warp-free seal
  • Hand-ported TIG welded inlets
  • Optimized primary tube routing for superior fit and performance
  • Merge collectors complete with welded scavenger spikes
  • Catted systems feature 200 cell metallic substrate catalytic converters for extreme durability
ALL American Racing Headers Exhaust Systems are for OFF-ROAD use only.
-------------------------------------------------------------------------------------

R
 

me32

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I know, I have heard car owners complain for years. Yes it is an "California EPA thing" but there is also much money that has to be handed over to them for "CARB EO certification(s).

I remember the CA specific cars from back in the mid 1960's, I believe it was 1968, CA cars had A.I.R. pumps and closed PCV systems, the other 49 states did not, then came catalytic converters, then separate CA specific computer tunes........the list goes on and on. In reality, we are sooooo far ahead of the rest of the world in lesser exhaust emissions, there is nothing to talk about related to the US and climate change from automobile emissions.

I have not researched CARB standards, but I believe other states are slowly adapting them.

R
You are correct the carb thing is nothing more than a pay day and not about actual pollution.
 

da5deuce

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Well as with anything money talks whether it's the state ref, or regular smog that's why I dont trip on it. Anyone in an emissions strict state is taking a chance on running longtubes, but if you can bribe the smog guy then you good. Theres always one who will take some cash to pass you.

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Papaw

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I'm in California and the last couple of required "emissions" checks I've had done consisted of OBD check only. No tailpipe sniffer and they never opened the hood. It seems to me that they check for emissions readiness only.
Oh, and the required fees, of course.
 

da5deuce

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I'm in California and the last couple of required "emissions" checks I've had done consisted of OBD check only. No tailpipe sniffer and they never opened the hood. It seems to me that they check for emissions readiness only.
Oh, and the required fees, of course.
Yea they switched to tailpipe sniffing about a few years ago, but I may be wrong. Either way it was a recent change, so it's easier to pass if you dont have too many extra mods like the whole egr delete, or sensors turned off etc etc...

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