I have to get an emissions test on my vl on the 20th of next month the car has a RB26DETT motor in it.. they told me at the RTA that it will be put in a room and that the car will idle for 15mins in there for the test ive been told off mates that they are looking for the pollution levels and air fuel levels can anyone help me with any advise on how to pass this test as it is 20 days away and really want to pass this test.. thankyou VL2NV

Go straight gas Some original photos have not been recovered yet.

hopefully someone on here has passed an emissions test and can help me out...or tell me someone that can give me advice on this test thanks

get a peice of metal, cut it out in the shape of a flange in ur exhaust, drill a few holes in it and stick it in between a gasket on either side and bolt it up. will run like **** but should reduce emmisions a bit. never tried it but heard of it working

That's for noise. Doubt it'll do much for emissions.

Quote: Originally Posted by brawlr [View Post] That's for noise. Doubt it'll do much for emissions. best bet is make sure you have a brand new catalytic convertor in your car and get it up to temperature before they start the test, besides that unless you have access to a gas analyser your pushing **** up hill

well whatever a GTR had exhaust wise, put that on, and run the standard RB26 computer. Might be a head **** but it should get you a pass. And the new Cat converter is a good idea too. And Full air box and filter setup.

if its the evaporative emissions test then no ****ing around with plates in the exhaust, swapping your pod for an airbox, or converting to gas will get around it. Your engine must be 100% stock to the model of the GTR it came out of, which means STOCK ecu, full exhaust (stock size), stock injectors, AFM's plugged in and working and all PCV hoses plugged back into where they should go. If all thats done it may pass.

e 85 for fuel will go a long way to helping ya pass

what obsessv said is for a noise test and have heard it works perfectly if they havent taken any photos of your car or engine numbers, many people by a stock rb30 na and drop that straight in

My understanding was that however the car is when you pass the emissions test is how it has to be for engineers and stay that way to be legal.

thanks all for your advice and comments i will post results up after the 20th to let people know how i went...this thread has helped me alot thanks guys cheers VL2NV

well the test was today.. and the result was.......FAILED..... it went 6x over the legal limit for my car in NOX G/KM its ment to be 0.9 NOX G/KM and mine went 1.56 NOX G/KM... 6 TIMES OVER NOT HAPPY.. the RTA guys were really nice and told me it is hard to pass this test and they recomend an after market computer so i can lean the fuel out to pass this test.. also check my airflow sensors and a new catilatic converter and a good mechanic.. so that is the result.. back in the garage she goes until i source the right mechanic.. though it was hectic fun today giving it a hiding up and down the freeway... ---------- Post added 20-04-11 at 17:37 ---------- Test results were.. Thc 8.78 nox 1.56 co 59.1 c02 201.9

Take it to a tuner, remove maf lid there is a ajustable pot in there, check voltages with a multimeter, higher the reading leaner it runs, around 1.0v is rather lean down near 0.8v is rich. I have never done this with a 26dett but have got away with this on other cars. Also another way of getting around this is to modify your signal from you temp sensor (ecu one not dash) open circut is rich as tits. done this on a 300zx. hope this helps in some way

Quote: Originally Posted by danovl2nv [View Post] Thc 8.78 nox 1.56 co 59.1 c02 201.9 You cars smoking the hooch!!!

croydon racing developments ive been told to take it to as they know these engines inside and out.. also 2 try maatouks too...if anyone on here knows anyone else can u let me know cheers VL2NV

Does that actually work the metal in the cat trick?

lean does not lower emissions... actually running richer lowers them. The RTA guy is telling you bunkies.. Your best bet is factory everything.. Or find a tuner who knows what they are doing. They will be looking for cat light off and cruise conditions. They don't even bring the car on boost.

AVL012345- Yes though the EPA testers arent stupid. When I got mine EPA'd the tester asked if I had any baffling in the exhaust such as a plate and drew a pic of my complete system to send to the EPA(some take photos). So if youve got a monster system and its quiet as shi t they will know.