CA Smog Results with Promax Scivision Stealth MAF
05-10-2007, 06:39 PM
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CA Smog Results with Promax Scivision Stealth MAF
These are the before and after California Smog results on my 1987 951 after installing the Promax SciVision stealth MAF kit. I am pleased with the results. You guys know how strict CA's rules are. Note that this was mistakenly posted in the regular 944 forum. I am reposting it here as it is more relevant.
BEFORE
Mileage 82,759 Date: 05/2005 Mods: Guru chips, LBE @ 15 psi (CV deleted), 3Bar FPR, Tial 38mm wastegate, 3" catback w/ Borla XR1, factory original catalytic convertor, K&N panel filter, Stock AFM.
Speed / RPM / CO2 / O2 / HCmax / HCavg / HCmeasured
15mph / 2432 / 14.4 / .1 / 116 / 31 / 45
25mph / 2451 / 14.5 / .1 / 91 / 20 / 17
CO%max / CO%avg / CO%measured / NOmax / NOavg / NOmeasured
.74 / .10 / .33 / 791 / 237 / 780
.62 / .09 / .15 / 730 / 199 / 506
AFTER
Mileage 84,737 Date 05/2007 Mods: Guru chips, LBE @ 15 psi (CV deleted), 3Bar FPR, Tial 38mm wastegate, 3" catback w/ Borla XR1, factory original catalytic convertor, K&N panel filter, Promax SciVision Stealth MAF.
Speed / RPM / CO2 / O2 / HCmax / HCavg / HCmeasured
15mph / 2526 / 14.1 / .2 / 116 / 31 / 73
25mph 2350 / 14.3 / .0 / 91 / 20 / 37
CO%max / CO%avg / CO%measured / NOmax / NOavg / NOmeasured
.74 / .10 / .54 / 791 / 237 / 765
.62 / .09 / .39 / 730 / 199 / 307
Obviously the MAF passed the visual test and aced the sniffer portion with room to spare. It looks like almost all of the measured numbers went slightly up, except, interestingly enough, for NOX which has been the culprit in many a failed 951 smog test.
BEFORE
AFTER
BEFORE
Mileage 82,759 Date: 05/2005 Mods: Guru chips, LBE @ 15 psi (CV deleted), 3Bar FPR, Tial 38mm wastegate, 3" catback w/ Borla XR1, factory original catalytic convertor, K&N panel filter, Stock AFM.
Speed / RPM / CO2 / O2 / HCmax / HCavg / HCmeasured
15mph / 2432 / 14.4 / .1 / 116 / 31 / 45
25mph / 2451 / 14.5 / .1 / 91 / 20 / 17
CO%max / CO%avg / CO%measured / NOmax / NOavg / NOmeasured
.74 / .10 / .33 / 791 / 237 / 780
.62 / .09 / .15 / 730 / 199 / 506
AFTER
Mileage 84,737 Date 05/2007 Mods: Guru chips, LBE @ 15 psi (CV deleted), 3Bar FPR, Tial 38mm wastegate, 3" catback w/ Borla XR1, factory original catalytic convertor, K&N panel filter, Promax SciVision Stealth MAF.
Speed / RPM / CO2 / O2 / HCmax / HCavg / HCmeasured
15mph / 2526 / 14.1 / .2 / 116 / 31 / 73
25mph 2350 / 14.3 / .0 / 91 / 20 / 37
CO%max / CO%avg / CO%measured / NOmax / NOavg / NOmeasured
.74 / .10 / .54 / 791 / 237 / 765
.62 / .09 / .39 / 730 / 199 / 307
Obviously the MAF passed the visual test and aced the sniffer portion with room to spare. It looks like almost all of the measured numbers went slightly up, except, interestingly enough, for NOX which has been the culprit in many a failed 951 smog test.
BEFORE
AFTER
05-10-2007, 10:17 PM
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Ben,
Looks like your car is running great! I would love to see your maf setup. You should bring it out this Saturday for a Fun Run (see my post).
Looks like your car is running great! I would love to see your maf setup. You should bring it out this Saturday for a Fun Run (see my post).