Chicago / Illinois emission test w / Range device

[Tonyv__]

The Range device keeps the emission monitors from setting so for emission testing you’ll want to unplug it a week before you get tested. Careful with that though, in my experience the AFM system doesn’t work well being disabled and then re-enabled

That would be my luck. I’m due in like June.

 

[Tonyv__]

I have my AFM/DOD turned off with a Diablosport Intune device that flashes the ECM and doesn't need to be kept plugged in. I pass Missouri emissions with no problems every 2 years. No need to unplug anything a week beforehand.

Another thought on this is get a OBD splitter cable and keep the Range dongle plugged in tucked up under the dash while leaving a OBD port available under the dash. Like this one from BTDieselworks

OBD port splitter cable

High quality custom OBD port splitter cable 100% guaranteed to work with all aftermarket devices and OBD scan tools. Unlike most OBD splitter cables, our OBD splitter offers a clean install due to the fact that it replaces/bolts in place of your existing OBD port, allowing the secondary tap to...

www.btdieselworks.com

View attachment 398048

Which year truck is your Diablo in tune working with? I still have mine from my 11 sierra. I unmarried it before I sold the truck. But never really dabbled with my 2015 because I figured gas mileage was already rough with the 6.2 I didn’t see a need to make it worse.

 

[gooffeyguy]

Which year truck is your Diablo in tune working with? I still have mine from my 11 sierra. I unmarried it before I sold the truck. But never really dabbled with my 2015 because I figured gas mileage was already rough with the 6.2 I didn’t see a need to make it worse.

I bought it when I had my 2011, then moved it to my 2012. I also bought a second license and use it on the 2002 Mustang.

I used to use an older Predator on the mustang, but when I bought the Intune I decided to just use the one device for both vehicles and sold the Predator. The Intune can have multiple licenses

 

[mikez71]

Myself, already disabled AFM through tune, only concern is smog (despite having all emissions equipment!).
Am able to reflash back to stock, but am planning full delete.
So I'm hoping it can pass smog with AFM solenoid codes, should I need to reflash stock tune.. ?

 

[Marky Dissod]

Myself, already disabled AFM through tune, only concern is smog (despite having all emissions equipment!).
Am able to reflash back to stock, but am planning full delete.
So I'm hoping it can pass smog with AFM solenoid codes, should I need to reflash stock tune?

How did you disable V4 mode 'through tune'?
Thoroughly disabling V4 mode in a tune, includes permanently disabling & redacting the V4 mode trouble codes.
Once those codes can never occur again, the emissions test cannot hold them against you.

Once all that's been done, it should pass smog, even if it uses slightly more fuel than it would with V4 mode enabled.

 

[Dustin Jackson]

@mikez71 If you do not have a check engine light on you should pass smog no problem. When you tune AFM out of the computer it’s like it was never there just like @Marky Dissod said

 

[mikez71]

Disabled through HPtuners, disabled solenoid trouble codes. Only worried about checksums.
I've been reading where any change from factory tune gets flagged..

(BTW not in Chicago, but cal-e-forni-uhh... and from other things I read, it's all coming to a state near you! sorry for the detour belair62!)

 

[Dustin Jackson]

@mikez71 I’m in California and the last shop I went to said they only check for emissions stuff. I even showed him the non AFM valley cover and he said that’s fine just make sure the emission monitors are set and no check engine light. Tuning AFM out doesn’t affect the emission monitors

 

[mikez71]

@mikez71 I’m in California and the last shop I went to said they only check for emissions stuff. I even showed him the non AFM valley cover and he said that’s fine just make sure the emission monitors are set and no check engine light. Tuning AFM out doesn’t affect the emission monitors

PHEW! You made my day! THANK YOU!

Don't know what I've been reading online. Scare tactics I guess.

 

[j91z28d1]

Disabled through HPtuners, disabled solenoid trouble codes. Only worried about checksums.
I've been reading where any change from factory tune gets flagged..

(BTW not in Chicago, but cal-e-forni-uhh... and from other things I read, it's all coming to a state near you! sorry for the detour belair62!)

I'm pretty sure you're worrying about nothing. but no you can not flash back to enable and unplug it will run like crap, throw codes and fail the test. same if you have a delete kit installed and enabled it in your tune over your check sum worry


if you fail the test because they can tell you've disabled it in the ecm.. doing a delete kit ain't going to help you. at that point you'd need to replace the afm lifters, enable it and run good oil and change it often.

there's trucks that go over 200k with afm working fine, and most get 150k without doing anything special.

 

[Dustin Jackson]

PHEW! You made my day! THANK YOU!

Don't know what I've been reading online. Scare tactics I guess.

@mikez71 Let me know if I’m wrong or if your experience is different, I don’t want to be telling people incorrect information.

 

[mikez71]

there's trucks that go over 200k with afm working fine, and most get 150k without doing anything special.

I'm just over 200k. I wasn't trying to delete AFM for emission testing, just for overall simplicity, figuring there's a good amount of miles on my lifters already. Plus I will never enable AFM, so I'd rather have the simpler parts. I hear about regular lifters taking a crap too, but being simpler, slightly less chance of going/being bad.

I was under the impression if you unplugged VLOM, you would get codes, but engine would run fine.. Thankfully, all moot now!

 

[mikez71]

@mikez71 Let me know if I’m wrong or if your experience is different, I don’t want to be telling people incorrect information.

For sure.. not due for a little while yet.. But it's good NOT to hear about anyone having issues with AFM disable/deletes and emissions testing (as it should be)

 

[Ltzjeff]

I read a few long posts regarding the Range module and emission tests but it seemed most were in PA or NY. Does anyone in Illinois or Chicago have any info on whether pulling the Range prior to test will cause a fail ?

In Chicagoland - pulled range the day before - did a little driving, but not enough for monitors to be approved by testing. Left it out and drove about 5-10 miles on 3 separate days and passed. Plugged it back in and no problems during time out and afterwards.

 

[repairman54]

On my old '11 5.3 w/range installed my I/M monitors would not run the EVAP tests. No CEL on or any codes stored. Only knew it as it wouldn't pass NJ inspection. I finally tracked it down to a bad MAP. It was erratic enough to stop tests running yet not bad enough to trigger any codes. My scan tool has 2 MAP tests, and it was erratically failing one of the tests.
Here's a tip to see if the MAP is fully OK, does the instant mpg go to 99 mpg on a long coast down with your foot off the gas? If not it's bad. I lost 2-3 mpg on a highway run that I have been doing for years, same route always, and that had me searching for issues like brakes dragging and other things trying to figure that out. New MAP got it back to normal 19 mpg.

 

[belair62]

On my old '11 5.3 w/range installed my I/M monitors would not run the EVAP tests. No CEL on or any codes stored. Only knew it as it wouldn't pass NJ inspection. I finally tracked it down to a bad MAP. It was erratic enough to stop tests running yet not bad enough to trigger any codes. My scan tool has 2 MAP tests, and it was erratically failing one of the tests.
Here's a tip to see if the MAP is fully OK, does the instant mpg go to 99 mpg on a long coast down with your foot off the gas? If not it's bad. I lost 2-3 mpg on a highway run that I have been doing for years, same route always, and that had me searching for issues like brakes dragging and other things trying to figure that out. New MAP got it back to normal 19 mpg.

Most I have seen just around town is 50' on coast down. Gonna try this on the hiway whenI getback to town.

 

[mikehooo]

I read a few long posts regarding the Range module and emission tests but it seemed most were in PA or NY. Does anyone in Illinois or Chicago have any info on whether pulling the Range prior to test will cause a fail ?

I’m running one in my Avalanche ,but we not tested here but if you unplug the Range and drive a couple days. (200-400] miles you won’t have any problems with emission test.