Engine/Transmission (1998.5 - 2002) Calif smog test and RV 275's?

[Nickaru]

My second smog check is coming in May. The first one I did in 2010, was a joke, but I was happy I passed. It was only because he didn't know diesels. He did comment on the puff of smoke when he revved it from idle, which wasn't even the correct procedure according to the research I did before doing this.

I figure now it's two years later and they may be wiser, but I think my 1. 5 EDM 80HP injectors may be causing the excessive smoke. I was thinking of going down to the Rv275 injectors and was looking for input. I love my EDM's, but it may be something I have to live with since I can't move out of Cali to get away from this.

My question: do the RV275 injectors work well with minimum smoke?



PS. I do disconnect and remove my Edge box before testing even though i think it should be legal to have on the vehicle because I can turn it on and off from inside the vehicle for off road use, but from what I heard, once they see a tuning box, it's over even if you go home remove it and come back.

 

[firemansdiesel]

The RV275 are fine. If you disconnect your programmer/tuner before the test and no engine light thrown. Your good to go. I would be more worried about failing with your turbo. If you have a keen tech on diesel. He'll notice it's not stock on visual.

 

[CCahill]

I've got Stage 2's in mine and even after I pulled off the Edge it smoked a bit... You'll be fine, I wouldn't go to the trouble to change em out. The visible smoke allowance is arbitrary at best...

 

[Nickaru]

jmill,

The turbo is a hybrid with different wheels inside, but the housing is the original Holset.



I did remove the tuner last time and she still puffed a little cloud of smoke when the throttle was blipped from idle. That was the wrong procedure. They are supposed to hold it somewhere around 2000 rpm then blip it to full throttle and check for excessive smoke cloud lasting no more than I think it was 5 seconds. Checked in a shop with no wind or drafts and a clear view through the side mirror of the exhaust pipe. The knucklehead had my truck's rear end sticking out of the shop in the windy conditions of Palmdale, California and he still said it smoked a little too much, but he passed me so I didn't complain.



I'm just thinking two years later and many diesels tested since then, they're all smarter now.

 

[MLee]

At idle there is not enough air being pushed through the intake by the turbo to not smoke. You need some rpm, some tubo spin to avoid the cloud. Those inspectors need a lot of education. They need to become TDR subscribers to be enriched. ( mind wise)

 

[Bob4x4]

FYI the snap idle test is done from idle. The 275's are very clean running and will help with mileage
You may also want to do some experimenting with chemicals. I did some snap idle testing with a diesel additive in the fuel filter housing and got huge improvements. A drop from 30% to 6% on a first gen and from 6% to under 1 % on a 2nd gen. It may be enough to allow you to continue running your bigger sticks.

 

[dresslered]

My question: do the RV275 injectors work well with minimum smoke?

I just completed my Kalifornia smog check without a problem. I removed the DDTTPM and reconnected the waste gate. I left the RV275's in. I believe that the 275's actually run cleaner than the OEMs since they have 5 hole nozzles design instead of 3 for better fuel/air mixture.

 

[KB0OU]

If you run some bio fuel before the test it will smoke less.