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It is my understanding that Brenspeed only turns off the rear o2's if you have an off road pipe. I could be wrong though.
I have read in more than one place they turn them off unless you ask for them to be on when you buy an intake/tuner package... but i am not 100% sure
I'll know soon enough, the pipe is gonna be here in a few days and Im gonna put it on, bring it to the shop I work at, hook it up and check the status of all the monitors
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Brenspeed and Bama both turn off rear 02s on EVERY tune unless told otherwise. It depends on how your COUNTY does inspections. Inspections aren't even the same across states. Some counties, such as the one I live in hook up a reader to your OBDII port and check your rear 02 sensor readings to see if your cats are working properly. If they are turned off, you fail emissions. I did even with cats. If you have an o/r pipe and the rear 02s on, the CEL comes on and you fail. It all depends on what county you live in and how strict the testing is. Why dont you just go by a testing place and ask them what they test so you can figure out what you need and stop freaking out at Brenspeed.
Do I have to put my stock intake back on and go to stock tune, or can I just go to stock tune and be ok with my C&L on? I heard the C&L let in too much air it needs a tune or a check engine light will come on or something.
If you have the C&L Street intake then you can order and install their no tune insert (http://www.cnlperformance.com/notune.html) and flash back to stock. If you bought their Racer intake then this won't work.
"This is the reason why tunes may not pass a PCM code read emissions test.
EVERY tune made starting with a base file(SCT or Diablosport) prevents the engine from
doing as many tests as it normally runs in order to speed up the processor. For you
computer guys its kinda like speeding up the clock speed of the processor to gain more
performance from it.
The Ford PCM runs a series of tests called " Readiness Tests" on certain systems and
sensors, and these tests in turn simply tell the PCM if these items are performing up to par.
If not, then a code is set. These are SOME of the tests that are disabled by the tune
files, and this is why when you go to a testing facility with the tunes loaded you may get a
"System Readiness Test Invalid" or "Not run". Not because of the rear 02's being turned off,
but because of the testing for the entire emissions readiness being disabled in the PCM.
Now for the big question, how do we pass testing?
The BEST answer is to simply return your car to the stock tune and the stock intake and
drive it for around 50 miles or 20-30 minutes. This will set all of the " Readiness
Monitors" and allow the car to pass with flying colors, as long as there are no other
issues.
Now we all know that for some of us this just isn't an option, everything from Off-road pipes to CMVC delete plates to Supercharger installations can prevent this. There are ways around this, but for legal reasons I will not publicly announce it. All I will say is that IF
you've gone with a quality dealer or know of a custom tuning dealer to go to, of course
like Bamachips, then we know what to do to make your car pass the PCM readiness tests.
Consult your custom tuning dealer for more information on this.
Also, these tests are different. I've had customers who have reported absolutely no issues
going through their local testing facilities and others who report immediate concerns, like
described above. Either way these tests can be passed with aftermarket components, but
remember this is ONLY the tests that check for codes in the PCM. Tailpipe sniffer tests may
pass, but I cannot guarantee this."
__________________
2005 Mustang GT/Manual/C&L Street CAI/Doug's 93 Race Tune
"This is the reason why tunes may not pass a PCM code read emissions test.
EVERY tune made starting with a base file(SCT or Diablosport) prevents the engine from
doing as many tests as it normally runs in order to speed up the processor. For you
computer guys its kinda like speeding up the clock speed of the processor to gain more
performance from it.
The Ford PCM runs a series of tests called " Readiness Tests" on certain systems and
sensors, and these tests in turn simply tell the PCM if these items are performing up to par.
If not, then a code is set. These are SOME of the tests that are disabled by the tune
files, and this is why when you go to a testing facility with the tunes loaded you may get a
"System Readiness Test Invalid" or "Not run". Not because of the rear 02's being turned off,
but because of the testing for the entire emissions readiness being disabled in the PCM.
Now for the big question, how do we pass testing?
The BEST answer is to simply return your car to the stock tune and the stock intake and
drive it for around 50 miles or 20-30 minutes. This will set all of the " Readiness
Monitors" and allow the car to pass with flying colors, as long as there are no other
issues.
Now we all know that for some of us this just isn't an option, everything from Off-road pipes to CMVC delete plates to Supercharger installations can prevent this. There are ways around this, but for legal reasons I will not publicly announce it. All I will say is that IF
you've gone with a quality dealer or know of a custom tuning dealer to go to, of course
like Bamachips, then we know what to do to make your car pass the PCM readiness tests.
Consult your custom tuning dealer for more information on this.
Also, these tests are different. I've had customers who have reported absolutely no issues
going through their local testing facilities and others who report immediate concerns, like
described above. Either way these tests can be passed with aftermarket components, but
remember this is ONLY the tests that check for codes in the PCM. Tailpipe sniffer tests may
pass, but I cannot guarantee this."
That is some pretty good info and clears things up a little bit. The pipe should be here tomorrow, and I'll have it on tomorrow night or thursday and then run a state inspection thursday or friday and see what happens... I'll post the results then.
kinda off topic, but if someone had 4.10 gears, then swapped out the intake and ran the stock tune/intake.. would he be okay to drive around until he swaps back on the CAI??
uh... yea as long as you arent hard at all on the car. your speedometer may be a lil messed. but who pays attention to that anyway?
__________________
2006 Black in Black all on Black Automatic GT
Saleen Twin Screw tuned by Brenspeed
431 rwhp and 435 rwtq, gotta love that boost... http://www.cardomain.com/ride/2646544
The mil for the secondaries o2 sensors is different that the mil for a cai. I would do it the sure fire way by putting on the stock intake and stock tune for the testing.
__________________
-2006 Mustang GT convertible: intake, tuner, straight pipes, rollbar, blackout panel, front lip, and 20" wheels
-2003 Hyundai Tiburon GT: Eaton supercharger, Cobra exchanger, I/H/E, Apexi AFC
-2009 Mazda 6 GT: tinted windows and front signals, AutoExe springs, and Rotora BBK.
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