My 427 big bore stroker passed smog today
10-15-2002, 09:34 PM
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My 427 big bore stroker passed smog today I have to thank MMS for their fine tuning! <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />
451.1 rwhp / 473 rwt 1998 <img border="0" alt="[Camaro]" title="" src="graemlins/camaro.gif" />
Isn't that amazing! <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> And already have 2000mi on it and 15 passes without any problems. <img border="0" title="" alt="[Cool]" src="gr_images/icons/cool.gif" />
Leo <img border="0" alt="[chug]" title="" src="graemlins/gr_chug.gif" />
<small>[ October 15, 2002, 09:36 PM: Message edited by: pedaltothemetal ]</small>
451.1 rwhp / 473 rwt 1998 <img border="0" alt="[Camaro]" title="" src="graemlins/camaro.gif" />
Isn't that amazing! <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> And already have 2000mi on it and 15 passes without any problems. <img border="0" title="" alt="[Cool]" src="gr_images/icons/cool.gif" />
Leo <img border="0" alt="[chug]" title="" src="graemlins/gr_chug.gif" />
<small>[ October 15, 2002, 09:36 PM: Message edited by: pedaltothemetal ]</small>
10-15-2002, 10:00 PM
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Re: My 427 big bore stroker passed smog today </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by silverado:
<strong>Is this with performance tuning, or tuning just to pass smog? Just curious.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">MMS tuned for the 224 cam. With SLP LT and catalytic converters, it allowed me to pass California emissions roller testing at 15mph and 25mph. It is the strictest testing compared to other states.
Leo
<strong>Is this with performance tuning, or tuning just to pass smog? Just curious.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">MMS tuned for the 224 cam. With SLP LT and catalytic converters, it allowed me to pass California emissions roller testing at 15mph and 25mph. It is the strictest testing compared to other states.
Leo
10-15-2002, 10:20 PM
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Re: My 427 big bore stroker passed smog today </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by superman:
<strong>congrats ! what are your 1/4 times? just curious! thanx</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">This is for a 3800lb car run at 4000ft altitude of Las Vegas Speedway SLP CAD.
12.38 @ 113mph with a 1.99 60ft. Factory cars were only running 14.2 that day.
Please don't compare with sea level and light weight guys with slicks and big cam.
I am a real old man with old man modded car.
Leo
<strong>congrats ! what are your 1/4 times? just curious! thanx</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">This is for a 3800lb car run at 4000ft altitude of Las Vegas Speedway SLP CAD.
12.38 @ 113mph with a 1.99 60ft. Factory cars were only running 14.2 that day.
Please don't compare with sea level and light weight guys with slicks and big cam.
I am a real old man with old man modded car.
Leo
10-16-2002, 09:08 AM
#6
Re: My 427 big bore stroker passed smog today I have a question about CA emissions testing. Here in TX when we had the sniffer test, they ask you what size (in liters) the engine is, but they will only allow you to select a size that came standard with the vehicle (V6 or 5.7L for us). That sucks, because that means when we have a larger motor, we are only allowed to produce the emissions limit of a smaller motor.
My old 382ci setup passed with the T1 and FLP cats, but passed as a 5.7L! (barely at low rpm). Had it been tested as a 6.2L, the computer would have allowed higher emissions.
Does the CA setup take into account engine size?
Anyways, congrats on passing!
-Tony
My old 382ci setup passed with the T1 and FLP cats, but passed as a 5.7L! (barely at low rpm). Had it been tested as a 6.2L, the computer would have allowed higher emissions.
Does the CA setup take into account engine size?
Anyways, congrats on passing!
-Tony
10-16-2002, 10:46 AM
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Re: My 427 big bore stroker passed smog today Oklahoma doesn't have emissions testing anymore, lol... Congrats on passing the CA tests pttm... I have an uncle in Menlo Park and he HATES having his cars tested because anything running just a little strange and they'll fail ya <img border="0" title="" alt="[Sad]" src="gr_sad.gif" />
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10-16-2002, 11:40 AM
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Re: My 427 big bore stroker passed smog today In CA it goes off the VIN. Only the OEM engine can be used. What they don't know won't hurt them though. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
10-16-2002, 01:32 PM
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Re: My 427 big bore stroker passed smog today Intersting Fact: My leaking MMS 388 made 450hp/463tq. I wonder if that cam isn't so small that you are losing hp and tq. Cool that it passes emissions though, that means it will save you $200 from having to pay off the smog guy every what...2 years?
10-16-2002, 02:39 PM
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Re: My 427 big bore stroker passed smog today </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by JP98SS:
<strong>Intersting Fact: My leaking MMS 388 made 450hp/463tq. I wonder if that cam isn't so small that you are losing hp and tq. Cool that it passes emissions though, that means it will save you $200 from having to pay off the smog guy every what...2 years?</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I ordered MMS build mine built that way. I had it speced as if GM would have built one for the showroom floor.
A cam can be changed out easily and retuned for more power now if I want. Then I can easily be over 500 in both hp and tq. Sorry about your leak. Why didn't you go with a C5R block or just build a 383 stroker. Knowing that they can leak, I had MMS put in a C5R block. Thanks to these boards I covered practically everything that can go wrong with my tq and hp, including all the drivetrain and fuel system.
From what I saw, I don't know how the operator can get around cheating anymore. Unless you buy another PCM with your VIN, or they remove your PCM, flash it back to stock, and put it in another stock car.
Leo
<strong>Intersting Fact: My leaking MMS 388 made 450hp/463tq. I wonder if that cam isn't so small that you are losing hp and tq. Cool that it passes emissions though, that means it will save you $200 from having to pay off the smog guy every what...2 years?</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I ordered MMS build mine built that way. I had it speced as if GM would have built one for the showroom floor.
A cam can be changed out easily and retuned for more power now if I want. Then I can easily be over 500 in both hp and tq. Sorry about your leak. Why didn't you go with a C5R block or just build a 383 stroker. Knowing that they can leak, I had MMS put in a C5R block. Thanks to these boards I covered practically everything that can go wrong with my tq and hp, including all the drivetrain and fuel system.
From what I saw, I don't know how the operator can get around cheating anymore. Unless you buy another PCM with your VIN, or they remove your PCM, flash it back to stock, and put it in another stock car.
Leo
10-16-2002, 07:52 PM
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Re: My 427 big bore stroker passed smog today $6k for a block is rediculous. It isn't that special. Plus, MMS assured me on every one of my motors that they wouldn't leak.
10-16-2002, 10:28 PM
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Re: My 427 big bore stroker passed smog today </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by TommySS:
<strong>Congrats on the numbers. I'm curious to know how you passed visual w/long tube headers</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I didn't say a word to the technician. I passed the visual solely by having every emission system connected and operating. If he failed me visually, then I would have found someone else who would pass me. The visual has to pass before the computer is connected and the sniffing begins.
Leo
<strong>Congrats on the numbers. I'm curious to know how you passed visual w/long tube headers</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I didn't say a word to the technician. I passed the visual solely by having every emission system connected and operating. If he failed me visually, then I would have found someone else who would pass me. The visual has to pass before the computer is connected and the sniffing begins.
Leo
10-17-2002, 12:47 AM
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Re: My 427 big bore stroker passed smog today </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Nine Ball:
<strong>I have a question about CA emissions testing. Here in TX when we had the sniffer test, they ask you what size (in liters) the engine is, but they will only allow you to select a size that came standard with the vehicle (V6 or 5.7L for us). That sucks, because that means when we have a larger motor, we are only allowed to produce the emissions limit of a smaller motor.
My old 382ci setup passed with the T1 and FLP cats, but passed as a 5.7L! (barely at low rpm). Had it been tested as a 6.2L, the computer would have allowed higher emissions.
Does the CA setup take into account engine size?
Anyways, congrats on passing!
-Tony</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Hi Tony,
In CA they use dyno rollers to do the testing and the b1s1 and b2s1 closed loop stoic AF ratios are constantly on the screen. Suppose to simulate actual road load conditions with the sensors constantly adjusting the AF ratio and not running rich.
My dyno rpms were as follows:
15mph 1724 rpm
25mph 1673 rpm
The operator only had two options on the computer for my year, make and model. So he hit the 5.7 option on the computer screen. He did note the HC was close. Max was 35 for the 25mph dyno test. 5 is average. Mine measured at 28. However he said next time I test I will have more leeway since it will be another 2 yrs older. BTW mine is a '98 and CA emissions required it to be tested for the first time this year or 4 years from the model year. LS1 Edit also save me cause I did get a SES P0420 the previous week. I deleted the code with Autotap and toggled off the b1s2 and b2s2 catalytic efficiency codes with my LS1 Edit, and the emissions computer interface couldn't detect this when they looked for trouble codes. Actually not a single trouble code was found. My fuel cap was also pressure tested, and every emissions control system was visually checked with a flashlight.
Leo
<strong>I have a question about CA emissions testing. Here in TX when we had the sniffer test, they ask you what size (in liters) the engine is, but they will only allow you to select a size that came standard with the vehicle (V6 or 5.7L for us). That sucks, because that means when we have a larger motor, we are only allowed to produce the emissions limit of a smaller motor.
My old 382ci setup passed with the T1 and FLP cats, but passed as a 5.7L! (barely at low rpm). Had it been tested as a 6.2L, the computer would have allowed higher emissions.
Does the CA setup take into account engine size?
Anyways, congrats on passing!
-Tony</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Hi Tony,
In CA they use dyno rollers to do the testing and the b1s1 and b2s1 closed loop stoic AF ratios are constantly on the screen. Suppose to simulate actual road load conditions with the sensors constantly adjusting the AF ratio and not running rich.
My dyno rpms were as follows:
15mph 1724 rpm
25mph 1673 rpm
The operator only had two options on the computer for my year, make and model. So he hit the 5.7 option on the computer screen. He did note the HC was close. Max was 35 for the 25mph dyno test. 5 is average. Mine measured at 28. However he said next time I test I will have more leeway since it will be another 2 yrs older. BTW mine is a '98 and CA emissions required it to be tested for the first time this year or 4 years from the model year. LS1 Edit also save me cause I did get a SES P0420 the previous week. I deleted the code with Autotap and toggled off the b1s2 and b2s2 catalytic efficiency codes with my LS1 Edit, and the emissions computer interface couldn't detect this when they looked for trouble codes. Actually not a single trouble code was found. My fuel cap was also pressure tested, and every emissions control system was visually checked with a flashlight.
Leo
10-18-2002, 04:59 PM
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Re: My 427 big bore stroker passed smog today When you said computer testing, I assume that is the OBD-II right?
If so, this is awesome news for me.. Where I live, my car only has to go thru OBD-II testing, no rollers and sniffers.. they just base it on what the computer tells them, and a quick visual.. So this means, if everythign appears to be at least connect, and I tell LS1-Edit to turn off/disable the reporting of error codes and use AutoTap to delete existng codes....... i should pass with about anything!!!! <img border="0" title="" alt="[Cool]" src="gr_images/icons/cool.gif" /> a 427 sounds more and more tempting...
</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif"><strong>Hi Tony,
In CA they use dyno rollers to do the testing and the b1s1 and b2s1 closed loop stoic AF ratios are constantly on the screen. Suppose to simulate actual road load conditions with the sensors constantly adjusting the AF ratio and not running rich.
My dyno rpms were as follows:
15mph 1724 rpm
25mph 1673 rpm
The operator only had two options on the computer for my year, make and model. So he hit the 5.7 option on the computer screen. He did note the HC was close. Max was 35 for the 25mph dyno test. 5 is average. Mine measured at 28. However he said next time I test I will have more leeway since it will be another 2 yrs older. BTW mine is a '98 and CA emissions required it to be tested for the first time this year or 4 years from the model year. LS1 Edit also save me cause I did get a SES P0420 the previous week. I deleted the code with Autotap and toggled off the b1s2 and b2s2 catalytic efficiency codes with my LS1 Edit, and the emissions computer interface couldn't detect this when they looked for trouble codes. Actually not a single trouble code was found. My fuel cap was also pressure tested, and every emissions control system was visually checked with a flashlight.
Leo</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">
If so, this is awesome news for me.. Where I live, my car only has to go thru OBD-II testing, no rollers and sniffers.. they just base it on what the computer tells them, and a quick visual.. So this means, if everythign appears to be at least connect, and I tell LS1-Edit to turn off/disable the reporting of error codes and use AutoTap to delete existng codes....... i should pass with about anything!!!! <img border="0" title="" alt="[Cool]" src="gr_images/icons/cool.gif" /> a 427 sounds more and more tempting...
</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif"><strong>Hi Tony,
In CA they use dyno rollers to do the testing and the b1s1 and b2s1 closed loop stoic AF ratios are constantly on the screen. Suppose to simulate actual road load conditions with the sensors constantly adjusting the AF ratio and not running rich.
My dyno rpms were as follows:
15mph 1724 rpm
25mph 1673 rpm
The operator only had two options on the computer for my year, make and model. So he hit the 5.7 option on the computer screen. He did note the HC was close. Max was 35 for the 25mph dyno test. 5 is average. Mine measured at 28. However he said next time I test I will have more leeway since it will be another 2 yrs older. BTW mine is a '98 and CA emissions required it to be tested for the first time this year or 4 years from the model year. LS1 Edit also save me cause I did get a SES P0420 the previous week. I deleted the code with Autotap and toggled off the b1s2 and b2s2 catalytic efficiency codes with my LS1 Edit, and the emissions computer interface couldn't detect this when they looked for trouble codes. Actually not a single trouble code was found. My fuel cap was also pressure tested, and every emissions control system was visually checked with a flashlight.
Leo</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">
10-19-2002, 02:29 AM
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Re: My 427 big bore stroker passed smog today </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by ynneK:
When you said computer testing, I assume that is the OBD-II right?
If so, this is awesome news for me.. Where I live, my car only has to go thru OBD-II testing, no rollers and sniffers.. they just base it on what the computer tells them, and a quick visual.. So this means, if everythign appears to be at least connect, and I tell LS1-Edit to turn off/disable the reporting of error codes and use AutoTap to delete existng codes....... i should pass with about anything!!!! <img border="0" title="" alt="[Cool]" src="gr_images/icons/cool.gif" /> a 427 sounds more and more tempting...
</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Before you jump for joy, please make sure toggled off codes can't be detected by the Emission's computer. I've heard the next generation Emissions computers can check for this, as well as know how many miles you have driven since you cleared all the codes, and the miles driven since that clearing has to be so many miles with so many on/off cycles before the testing can continue.
Leo
When you said computer testing, I assume that is the OBD-II right?
If so, this is awesome news for me.. Where I live, my car only has to go thru OBD-II testing, no rollers and sniffers.. they just base it on what the computer tells them, and a quick visual.. So this means, if everythign appears to be at least connect, and I tell LS1-Edit to turn off/disable the reporting of error codes and use AutoTap to delete existng codes....... i should pass with about anything!!!! <img border="0" title="" alt="[Cool]" src="gr_images/icons/cool.gif" /> a 427 sounds more and more tempting...
</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Before you jump for joy, please make sure toggled off codes can't be detected by the Emission's computer. I've heard the next generation Emissions computers can check for this, as well as know how many miles you have driven since you cleared all the codes, and the miles driven since that clearing has to be so many miles with so many on/off cycles before the testing can continue.
Leo
