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Any mickey-mousing to get these nice motors to pass smog?
Sam
__________________
1992 Nissan Sentra SE-R
-JDM SR20DE
-Tsuru Front End
-PR CAI
-Voodoo JWT Comp
-KYB AGX w/ Eibach Pro-Kit and poly bushings
-AD22VFs with Metal Masters
-fancy leather shift boot with red stiching.
-15 Inch Rotas with Ricey Nitto tires
well, as for tailpipe emissions, these should have no problem passing smog. underhood inspection is a completely different can of beans. you will have to find somebody who will "forget" to look under your hood, and as long as your cat and O2 sensor are good, you should pass with flying colors.
As long as it passes tailpipe emissions, I'm sure you could creatively connect all of the OBD and other sensors in the engine bay so that they appear to be connected.
__________________
Chuck Nibbana
Retired VE owner
Forever an SE-R owner at heart
2005 BMW M3
Why would a underhood inspection be something to worry about? I don't have to worry about emissions here in Tampa Bay, FL, but I'm just curious. What are they looking for? To me the VE looks just like anyother SR20, but with a nicer valve cover!
__________________ Sam Bass / 1998 200SX SE-R
Atlanta, Georgia
Mods: JWT POP Filter, 91 Intake Cam, Stillen 4-1 Header, N1-style muffler, Front and rear STBs, Motivational Rear Strut Mounts, Hyperco/AGX's, ES Front & Rear Motor Mounts, ES Shifter Bushing, Pacesetter Quickshifter | In the works: AD22 Brakes
Originally posted by HotshtSR20 well, as for tailpipe emissions, these should have no problem passing smog.
Didn't Rob Cadle, on the National mailing list, mention something about this engine not having an EGR system? The motor most likely will not pass emissions testing without an EGR, depending upon the emissions testing procedures in your particular state. Maryland, for example, utilizes either a simulated road test on a dyno, or an idle test. An EGR system would be required to keep NOx emissions down during the simulated road test, I believe. An SR20VE may be able to pass the idle test however, where carbon monoxide, carbon dioxide, and hydrocarbon output are measured.
Also, in Maryland (this may apply to other states as well), a vehicle owner is permitted to obtain an emissions inspection waiver for his/her vehicle. The owner must demonstrate (via a receipt and mechanic's repair description) that repairs equal to or greater than a predetermined monetary value have been performed on the vehicle's emission system after the vehicle has failed an emissions test. The monetary value depends upon the model year of the vehicle. Such conditions in emissions laws may prove to be "useful"...
Rob Cadle mentioned that with the high compression (11:1) and lack of EGR, the car would definitley NOT pass emissions checks. I believe it was the NOx that would definitley fail emissions standards.
My NX is running without EGR (everything is plugged up and AEBS header) and it passed the VA emissions (dyno, test for NOX) with flying colors. Although it is only 9.5:1. So it is possible it may pass with a good heated up cat. Only time will tell.
Originally posted by nx2kracer My NX is running without EGR (everything is plugged up and AEBS header) and it passed the VA emissions (dyno, test for NOX) with flying colors. Although it is only 9.5:1. So it is possible it may pass with a good heated up cat. Only time will tell.
What about using denatured alcohol in a 1:4 ratio with gasoline mentioned by Jay Hassinger? He said he had good success with this trick when trying to pass CT emissions on an SR20DET. Sounds like nothing more than ethanol which some states/cities run to limit emissions.
well, as for no EGR, hondas dont have EGR, but are still LEV vehicles. i think the reason a no EGR equipped DE would not pass would be because of cam overlap, but the low end cam on the VE is so mild, emissions should be minimal. we have the smog dyno here too, and even with the "realistic" simulation of road driving, the car should pass, as it will never get into the big cam on the smog dyno.
I agree nox should not be a problem with out the EGR. My 92 SE-R failed in NOX it was the cat that was bad.Mass has the same dyno roller test as NY and Maryland.Like to see someone try though. Question,some cars use exhaust valve overlap to act as an egr.Early 98 Ford 2.0 used this as well as the Contours.Does Nissan use this?
no EGR on the DET, i think i twould be hard pressed to pass smog in Cali. you could swap out the stokc header and intake manifold to get the EGR back, and swap in a stock ECU that will actually control it.
you could jerry rig it to make it look like the EGR is plugged in, and retard your timing down to about 6-7 degrees to control NOx emissions, but then your HC may go up.
or you could get it "hot-smogged" going rate for that is about $150+.
My ve passed in maryland with lower numbers accross the board than my de (with stock ve ecu)-- they can nail you on inspection though which is a whole different ball of wax... However, with the calum ecu the car was just over with hc, but I didn't retard the timing or anything, nox and cm passed.
Also, I retarded timing to 11-12 degrees with the ve ecu just to be safe. I could have tried again with the calum, but I passed last time with the ve ecu and didn't want to take any chances the second time.
I also used a secret trick-- a fuel warmer. It's something that people interested in improving gas mileage use on their cars. It's safe as long as you are not racing your car with it constantly (under wot all the time). I've used it for daily driving for the last 3 months and noticed about a 2 mpg increase city driving-- it actually feels a little torquier down low too. I asked around about combustion temp issues and what I've been told its not an issue under normal driving, but I'm no expert, maybe someone could chime in. However, there have been no issues with it. You attach a metal tube to a colant line with a closed tube on top of it that you run your fuel too and from. I'll post a pic on my cardomain site at some point... It's proven mod for gas mileage increase... you get more complete combustion do to more evaporated fuel supposedly. The outgoing line is warm to the touch on mine but not scolding or anything, and I've noticed nothing but benefits for normal driving. www.hydrogen-boost.com has some info on it as well as some other sites.
Also emissions where literally cut in half compared to the last time I had emissions (with the ve ecu) with the fuel warmer. Here were the numbers...
Md limits
HC 1.0000 gpm CM 20.00000 gpm Oxide so Nitrogen 2.2000 gpm
with calum ecu
15 degrees timing
no fuel heater 1.0702 fail 16.8559 gpm pass 1.7614 gpm pass
2 year ago
20ve ecu 9~ gpm close to limit about the same as with calum ecu for CO and NOx
15 degrees timing
(I can't find it but remember
vaguely these numbers
no feul heater
you guys fail to realize that here in CA we have the most stringent emmissions standards. any car from CA is 50 state smog legal but not all cars from oter states can be registered here without first going to a referee to make sure all emissions components are present and working. i hate it. i'd det now but i hate that in 1.6 years i will either have to go back to stock or pray that my hookup still exists.
