Power FC Tune specifically for smog test?
Tune specifically for smog test?
10-09-13, 11:09 AM
#2
Senior Member
iTrader: (1)
Join Date: Jun 2010
Location: Santa Monica
Posts: 475
Likes: 0
Received 0 Likes
on
0 Posts
There is no reason to tune for smog. If your emissions work correctly and the car is tuned correctly it should pass smog. Boost will not effect smog. In FD's the smog test should never exceed 2800rpm at very light throttle. If you can put a stock ECU in the car and run a known good stock cat and with all of the emissions devices and everything set correctly you should pass no problem.
EB Turbo
EB Turbo
10-09-13, 11:20 AM
#3
Moderator
iTrader: (3)
Join Date: Mar 2001
Location: https://www2.mazda.com/en/100th/
Posts: 30,986
Received 2,688 Likes
on
1,903 Posts
+1 if you hit boost during a smog test, something is wrong.
the stock ECU is in closed loop for the smog test
the stock ECU is in closed loop for the smog test
10-09-13, 06:35 PM
#5
Junior Member
Thread Starter
Join Date: Aug 2013
Location: SF
Posts: 20
Likes: 0
Received 0 Likes
on
0 Posts
Thanks guys.... the advice is much appreciated.
Btw, and I posted this in wtb, but if any of you have a spare air pump and associated parts (the mount clamp, tubes connecting to cat, etc), I would love to buy it. I need the whole assembly basically.
Btw, and I posted this in wtb, but if any of you have a spare air pump and associated parts (the mount clamp, tubes connecting to cat, etc), I would love to buy it. I need the whole assembly basically.
10-10-13, 10:46 PM
#6
Eye In The Sky
iTrader: (2)
Join Date: Feb 2001
Location: In A Disfunctional World
Posts: 7,902
Likes: 0
Received 119 Likes
on
69 Posts
The question is very sensible if you have a modified engine!
My non-seq engine with DP, high flow cat, large IC, and mild porting required a leaner map to pass Texas testing on a dyno. The first time it was tested, I logged it and slightly failed. Since TX allows one more test for free at the same station, I came back prepared.
I looked at the tests logs for which cells were used for the 2nd and 3rd gear runs.
Reduced fuel there, put in stock hotter plugs than my normal 350 hp required plugs,
went back and passed.
Every year the leaner map goes back in and if tests results vary, I adjust for it for the next year.
My non-seq engine with DP, high flow cat, large IC, and mild porting required a leaner map to pass Texas testing on a dyno. The first time it was tested, I logged it and slightly failed. Since TX allows one more test for free at the same station, I came back prepared.
I looked at the tests logs for which cells were used for the 2nd and 3rd gear runs.
Reduced fuel there, put in stock hotter plugs than my normal 350 hp required plugs,
went back and passed.
Every year the leaner map goes back in and if tests results vary, I adjust for it for the next year.
Trending Topics
10-12-13, 11:39 PM
#8
Eye In The Sky
iTrader: (2)
Join Date: Feb 2001
Location: In A Disfunctional World
Posts: 7,902
Likes: 0
Received 119 Likes
on
69 Posts
Low speed test maximums:
2nd gear 15 mph, HC(ppm) 136, CO %(.76), NOx(ppm) 1045
High speed test maximums:
3rd gear 25 mph, HC(ppm) 132, CO %(.73), NOx(ppm) 945
These are map locations that would not be used for real driving.
10-16-13, 07:27 PM
#10
Eye In The Sky
iTrader: (2)
Join Date: Feb 2001
Location: In A Disfunctional World
Posts: 7,902
Likes: 0
Received 119 Likes
on
69 Posts
No ACV as it does not fit with after market large injector rails.
I have an SS injection pipe welded into my mid-pipe just like my hi-flow cat has.
The air pump flows directly into the fittings on both pipes/cat.
I have an SS injection pipe welded into my mid-pipe just like my hi-flow cat has.
The air pump flows directly into the fittings on both pipes/cat.
10-16-13, 11:02 PM
#12
Eye In The Sky
iTrader: (2)
Join Date: Feb 2001
Location: In A Disfunctional World
Posts: 7,902
Likes: 0
Received 119 Likes
on
69 Posts
No as the stock way only worked with the ACV and into the exhaust port. All that is blocked off with a single turbo manifold. I do not run O2 FB thus no reason to engineer for it. It would also be difficult to figure and control the correct amount of air flow.
10-16-13, 11:09 PM
#13
Senior Member
iTrader: (1)
Join Date: Jun 2010
Location: Santa Monica
Posts: 475
Likes: 0
Received 0 Likes
on
0 Posts
You will get nowhere if you are not pumping air upstream. Pumping air into the center of the cat only helps the cat lite off. You need to delute the exhaust into the cat. What kind of cat are you running?
EB Turbo
EB Turbo
Thread
Thread Starter
Forum
Replies
Last Post