Fun day passing emissions!
#1
Fun day passing emissions!
New York here, figured I'd share a story
Well it passed ... after 5 ******* tries. But... my car isn't stock, and it may not be the best tune:
Street ported with a Haltech
The cat was used, and it probably needed to be run and cleared (we installed it at the shop), so the first attempt wasn't going to work anyway. Also, the car wasn't fully warmed up the first try, and we forgot to switch on the air pump (off a vette) until half way through.
The numbers were a disaster
HC: 7.8 out of allowed 0.8 (YIKES)
CO: 30 out of an allowed 15 (again, YIKES)
NOx: passed EASY by whatever huge amount. Everything passes NOx
second attempt... Fully warmed up and air pump on
HC: 2.8 (still failing badly)
CO: passed
NOx: passed
At this point I'm told taking out timing will help to drop the HC
third attempt...
Took timing out all over my maps, same as usual for the rest
HC: 1.8 still failing to beat 0.8
fourth attempt...
Took out even more timing all over the place. Poured alcohol into the gas tank.
The sniffer fell out of the exhaust duct half way through and the test failed
FIFTH attempt...
Said "to hell with this, not taking any chances". Locked the timing at -5 degrees
HC.... 0.67 out of 0.8. FINALLY PASSED
NOW... there is a bit more to this. These old Haltechs have known issues with crank signal, and I really want to redo my CAS lines with nice new shielding. So throughout all these tests, I was having misses. Not horrible, but they were there and they don't help.
I didn't give the engine a good redline either before doing any of the testing (d'oh!)
Also it was 26 degrees this morning when I went to start my car. My doors were frozen shut. Last weekend I had to jump the car with a jump pack to start it. The week passed and we had some pretty cold days.... so my battery is not very healthy. I tried this morning to start without assists and it was cranking SLOW. So I threw the jump pack on. It's a little better, but not great and now all I am doing is flooding it. So I cut the fuel and crank. It caught, idled up for 5 seconds, died. Try again and I'm flooding. Try un-flooding again and then another attempt. No good, and my crank is weak again. At this point I'm cranking too slow, flooding even worse, and killing my jump pack. Laptop is telling me I'm at a pathetic 8 volts when cranking. Now I have no hope to start this car. So I hop in my trusty Honda and run to autozone to buy jumper cables.
Thank you Honda!
I was able to get strong cranking a few times without fuel to be sure of un-flooding.
A little more swearing and cranking and it fired up.
After all that I went and did my testing. On most certainly fubar plugs...
Final passing results:
HC limit: 0.80 Result: 0.67
CO Limit: 15.00 Result: 4.32
NOx limit: 2.00 Result: 0.08
That was my fun day, figured I'd share. Now I know what to do next year.
Well it passed ... after 5 ******* tries. But... my car isn't stock, and it may not be the best tune:
Street ported with a Haltech
The cat was used, and it probably needed to be run and cleared (we installed it at the shop), so the first attempt wasn't going to work anyway. Also, the car wasn't fully warmed up the first try, and we forgot to switch on the air pump (off a vette) until half way through.
The numbers were a disaster
HC: 7.8 out of allowed 0.8 (YIKES)
CO: 30 out of an allowed 15 (again, YIKES)
NOx: passed EASY by whatever huge amount. Everything passes NOx
second attempt... Fully warmed up and air pump on
HC: 2.8 (still failing badly)
CO: passed
NOx: passed
At this point I'm told taking out timing will help to drop the HC
third attempt...
Took timing out all over my maps, same as usual for the rest
HC: 1.8 still failing to beat 0.8
fourth attempt...
Took out even more timing all over the place. Poured alcohol into the gas tank.
The sniffer fell out of the exhaust duct half way through and the test failed
FIFTH attempt...
Said "to hell with this, not taking any chances". Locked the timing at -5 degrees
HC.... 0.67 out of 0.8. FINALLY PASSED
NOW... there is a bit more to this. These old Haltechs have known issues with crank signal, and I really want to redo my CAS lines with nice new shielding. So throughout all these tests, I was having misses. Not horrible, but they were there and they don't help.
I didn't give the engine a good redline either before doing any of the testing (d'oh!)
Also it was 26 degrees this morning when I went to start my car. My doors were frozen shut. Last weekend I had to jump the car with a jump pack to start it. The week passed and we had some pretty cold days.... so my battery is not very healthy. I tried this morning to start without assists and it was cranking SLOW. So I threw the jump pack on. It's a little better, but not great and now all I am doing is flooding it. So I cut the fuel and crank. It caught, idled up for 5 seconds, died. Try again and I'm flooding. Try un-flooding again and then another attempt. No good, and my crank is weak again. At this point I'm cranking too slow, flooding even worse, and killing my jump pack. Laptop is telling me I'm at a pathetic 8 volts when cranking. Now I have no hope to start this car. So I hop in my trusty Honda and run to autozone to buy jumper cables.
Thank you Honda!
I was able to get strong cranking a few times without fuel to be sure of un-flooding.
A little more swearing and cranking and it fired up.
After all that I went and did my testing. On most certainly fubar plugs...
Final passing results:
HC limit: 0.80 Result: 0.67
CO Limit: 15.00 Result: 4.32
NOx limit: 2.00 Result: 0.08
That was my fun day, figured I'd share. Now I know what to do next year.
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