Emissions
05-09-2012, 07:05 PM
#1
1st Gear Member
Thread Starter
Join Date: Feb 2011
Location: Colorado
Posts: 117
Emissions
To anyone out there that can help!!! I have an 08 Gt & recently put a set of Kooks Kustom Headers w/ catted x-pipe & also outfitted it with the VMP 500hp kit. I was told that this was all street legal when i bought it from the numerous vendors i purchased it from. Well,after installing everything & downloading the custom tune i took it to get the emissions test here in Colorado & it FAILED BIG TIME!!! Ive been told that its the tune & ive been told that its the cats that i have on it. Just curious if anyone else has the same setup or close to the same setup i have & if it passed emissions? I feel like im stuck with a 25k boat anchor after this has happened!!! Dont know if i was mislead when i purchased the exhaust or if the other upgrades are the problem?? Please let me know what any of you guys think about this? Justin at VMP has been great & has tried to help me but with no sucsess. Any feedback is greatly appreciated!! Thanks fellow gearheads!!
05-09-2012, 07:26 PM
#2
TECH SAVANT
Join Date: Dec 2006
Location: Saint Augustine, FL
Posts: 10,938
You haven't provided enough information, specifically why did it fail? Were the I/M monitor tests not all completed (this would cause a P1000 trouble code), did it fail a visual inspection, or did the actual emissions test fail?
05-10-2012, 07:27 AM
#3
2nd Gear Member
Join Date: Mar 2011
Location: CA
Posts: 209
I don't think you will pass without anything but the stock tune. Get the stock tune back and after the test revert back to the good one. Aftermarket CATs are not as efficient as stock cats. You still might be able to get it to pass with them though as long as they are legal in your state.
Like Cliffyk said tell us the reason for failing.
Like Cliffyk said tell us the reason for failing.
05-10-2012, 08:10 AM
#4
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Thread Starter
Join Date: Feb 2011
Location: Colorado
Posts: 117
emissions
It passed the visual inspection. The parts it failed were the HC GPM-limits were 1.20, my readings were 2.7352. also the CO GPM-limits are 15.0000,my readings were 29.0666 & it also failed the NOx GPM-limits are 1.5000, my readings were 1.9595. As you can see they all failed misrabely!! It says these high readings are from unburned fuel, when the air/fuel mix is too rich & A result of high combustion temps & or high high combustion pressure.
05-10-2012, 08:13 AM
#5
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Join Date: Feb 2011
Location: Colorado
Posts: 117
emissions
It has no trouble code & the car has no C.E.L on. Just cant figure it out!!!
05-10-2012, 08:16 AM
#6
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Join Date: Feb 2011
Location: Colorado
Posts: 117
emissions
I don't think you will pass without anything but the stock tune. Get the stock tune back and after the test revert back to the good one. Aftermarket CATs are not as efficient as stock cats. You still might be able to get it to pass with them though as long as they are legal in your state.
Like Cliffyk said tell us the reason for failing.
Like Cliffyk said tell us the reason for failing.
05-10-2012, 08:37 AM
#7
TECH SAVANT
Join Date: Dec 2006
Location: Saint Augustine, FL
Posts: 10,938
It passed the visual inspection. The parts it failed were the HC GPM-limits were 1.20, my readings were 2.7352. also the CO GPM-limits are 15.0000,my readings were 29.0666 & it also failed the NOx GPM-limits are 1.5000, my readings were 1.9595. As you can see they all failed misrabely!! It says these high readings are from unburned fuel, when the air/fuel mix is too rich & A result of high combustion temps & or high high combustion pressure.
05-10-2012, 04:04 PM
#8
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Join Date: Feb 2011
Location: Colorado
Posts: 117
emissions
Thanks for the help. I had it tested after the tune was modified by the guy i purchased the tuner from & it was way closer to passing this time. As for the cats being ruined,do you think they would be ruined since ive only put about 150 miles on the car since ive put the exhaust on. i got it tuned with what is said to be one of the best tuner guys in Florida. when u say a hands on tuner are you talking a shop with a dyno? Thanks again for the help.
05-10-2012, 04:51 PM
#9
TECH SAVANT
Join Date: Dec 2006
Location: Saint Augustine, FL
Posts: 10,938
Thanks for the help. I had it tested after the tune was modified by the guy i purchased the tuner from & it was way closer to passing this time. As for the cats being ruined,do you think they would be ruined since ive only put about 150 miles on the car since ive put the exhaust on. i got it tuned with what is said to be one of the best tuner guys in Florida. when u say a hands on tuner are you talking a shop with a dyno? Thanks again for the help.
By "hand's on" I mean that the tuner was in the same room/garage/whatever as the engine while it was being tuned--I.e. not an email, "mail order" tune. A "dyno" is a convenient instrument for measuring the impact of changes made to the tune, but is far from being an essential tuning tool.
Was the car actually in Florida when it was tuned? If not did the tuner know you were in Colorado? According to NetState.com the lowest altitude in Colorado is 3,315 ft above sea level, the highest over 14,000 ft. This means that any tune optimised for Florida (where the mean altitude is 100ft and the highest out it the Panhandle is 345 ft) will run rich anywhere in Colorado.
The MAF can correct this to some extent, but not that much if the tune was tweaked for the highest performance here.
05-10-2012, 10:13 PM
#10
1st Gear Member
Thread Starter
Join Date: Feb 2011
Location: Colorado
Posts: 117
emissions
With only 150 miles the cats may be OK if you can fix the overly rich problem.
By "hand's on" I mean that the tuner was in the same room/garage/whatever as the engine while it was being tuned--I.e. not an email, "mail order" tune. A "dyno" is a convenient instrument for measuring the impact of changes made to the tune, but is far from being an essential tuning tool.
Was the car actually in Florida when it was tuned? If not did the tuner know you were in Colorado? According to NetState.com the lowest altitude in Colorado is 3,315 ft above sea level, the highest over 14,000 ft. This means that any tune optimised for Florida (where the mean altitude is 100ft and the highest out it the Panhandle is 345 ft) will run rich anywhere in Colorado.
The MAF can correct this to some extent, but not that much if the tune was tweaked for the highest performance here.
By "hand's on" I mean that the tuner was in the same room/garage/whatever as the engine while it was being tuned--I.e. not an email, "mail order" tune. A "dyno" is a convenient instrument for measuring the impact of changes made to the tune, but is far from being an essential tuning tool.
Was the car actually in Florida when it was tuned? If not did the tuner know you were in Colorado? According to NetState.com the lowest altitude in Colorado is 3,315 ft above sea level, the highest over 14,000 ft. This means that any tune optimised for Florida (where the mean altitude is 100ft and the highest out it the Panhandle is 345 ft) will run rich anywhere in Colorado.
The MAF can correct this to some extent, but not that much if the tune was tweaked for the highest performance here.