LS1 Hotcam Pass Emissions?
LS1 Hotcam Pass Emissions? Hey guys! We have the sniffer with the roller dyno thing in MO. I was wanting to put an LS1 Hotcam in my WS6 along with some TTS Longtubes with cats and GMMG catback. If I would get a good tune, do you think I could pass the sniffer? Thanks for any opinions and info!
The only way to pass a roller test is with cats. No cats and you best have the worlds best emissions tune, and pray.......HARD. We hooked mine up to a sniffer for fun. Wasn't even close.
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I have been doing ET in Ga for almost 6 years at our shop, 96 and up cars get OBDII testing which we all know can be passed with LS1 edit with almost any setup(we have NO visual inspection on OBD cars here) just for fun I ran my 02 with Lt's ORY, hotcam(see sig) in manual mode and it would pass the levels set for 95 LT1 cars! These were the last standards available of course because after 96 25/25 and 50/15 testing was not required. It was close on NOx because of no cats but would pass HC & CO, which was suprising.
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Joined: Nov 2001
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From: Schiller Park, ILL Member: #317
Originally Posted by RhinoTA
im in chicago, which is the sniffer with dyno.
IL has 8 counties total that test. All of these counties use OBD scan test only for '96 and newer cars. And yes I'm sure of this.
All you have to do is pass the scan test, nothing LS1 Edit can't take care of for you... 
The I/M240 crap you are thinking of is for '81-'95 cars. Pre-'81 are sniffer only (no dyno)....
The Gateway STL Clean air act is so pathetically Easy to pass. You don't even need to tune your computer for performance but just turn off all your SES codes and delete prior history. Personally I wouldn't get those TTS headers. If you want Tuning I would contact Mark@ Raging Motorsports 913-814-RAGE or Ron@ Davinci Motorworks 618-222-1201 if you want any local help.
Best of luck
Floyd
Best of luck
Floyd
Originally Posted by RPM WS6
No it's not.
IL has 8 counties total that test. All of these counties use OBD scan test only for '96 and newer cars. And yes I'm sure of this. All you have to do is pass the scan test, nothing LS1 Edit can't take care of for you...
The I/M240 crap you are thinking of is for '81-'95 cars. Pre-'81 are sniffer only (no dyno)....
IL has 8 counties total that test. All of these counties use OBD scan test only for '96 and newer cars. And yes I'm sure of this.
All you have to do is pass the scan test, nothing LS1 Edit can't take care of for you... The I/M240 crap you are thinking of is for '81-'95 cars. Pre-'81 are sniffer only (no dyno)....
Thats good to know....I assumed it was both because I used to have a 98 civic and they ran it on the dyno thingy, or I/M240?
Joined: Nov 2001
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From: Schiller Park, ILL Member: #317
Originally Posted by RhinoTA
Thats good to know....I assumed it was both because I used to have a 98 civic and they ran it on the dyno thingy, or I/M240?
You must have had your '98 tested in early '02. When I had my '96 Bonneville tested in May of '02 it was OBD scan only.
They still pull the cars up on the dyno to plug into the PCM, but they don't actually put anything in the tail pipe or run the car on the dyno ('96 and up).
Joined: Nov 2001
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From: Schiller Park, ILL Member: #317
Originally Posted by TA2SLOW346
Do they check to see if your vin# in the pcm matches the one on the car?
I've never tried to pass one with a non-matching VIN???
Originally Posted by TA2SLOW346
Do they check to see if your vin# in the pcm matches the one on the car?
Originally Posted by RPM WS6
Yes, because up until 2002, they still used I/M240 even for '96 and newer cars. But that pratice is no longer. OBD scan only for '96 and up now.
You must have had your '98 tested in early '02. When I had my '96 Bonneville tested in May of '02 it was OBD scan only.
They still pull the cars up on the dyno to plug into the PCM, but they don't actually put anything in the tail pipe or run the car on the dyno ('96 and up).
You must have had your '98 tested in early '02. When I had my '96 Bonneville tested in May of '02 it was OBD scan only.
They still pull the cars up on the dyno to plug into the PCM, but they don't actually put anything in the tail pipe or run the car on the dyno ('96 and up).
Yep, I had it tested in '02, i cant remember when, but it was definetly early in the year. Thats really cool though, Ive almost disregarded getting cam and headers thinking i would be screwed come test time. Thanks for that info! looks like its time for some Rumpity Rump!
Joined: Nov 2001
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From: Schiller Park, ILL Member: #317
Originally Posted by RhinoTA
Ive almost disregarded getting cam and headers thinking i would be screwed come test time.
Joined: Nov 2001
Posts: 34,631
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From: Schiller Park, ILL Member: #317
Originally Posted by Pro Stock John
I have heard of 2-3 hotcammed LS1's passing even the rollers around Chitown.
I think they are no longer offering even the option for roller tests on '96 and up cars as of 1/1/04. You must now pass the scan.
Originally Posted by RPM WS6
Actually, even in states that still do tail pipe testing many cams will pass if you run cats. Emissions testing should not keep anyone from doing cam & headers, just keep in mind that if your state still does tail pipe testing you'll need cats and a mild to mid sized cam. Any 224/224 114lsa or smaller cam should pass the sniffer with cats.