GSJake

Ahh.. the man himself chimes in.
Thank you for the responses!

Curious. If you take out the first restrictive pre cat. Then what is the reasoning behind your DP with the high flow secondary cat?

mstolars

I was lucky enough to get the first RV6 downpipe and it's been problem free ever since. Passed emissions in IL a couple months back no problem.


The reason for the high flow secondary cat is to help with the smell associated with running without a cat.

rdxchris710

thank you very much i will be purchasing mine within the next few weeks. Anyone have a install video? Thewrench gave me some good tips on installing it. I cant wait! btw any sales or deals for tax season on these things

Tomtwtwtw

It flows high enough to not cause any major restriction, while still helping to eliminate some of the smell and rasp of a full open exhaust. Best of both worlds type scenario (unless you like loud and stinky).

GSJake

Interesting. Did you get the cated version? Do you run the fouler? Do you have any check engine lights on?

I see.. i guess I have never smelt exhaust from a non cated vehicle.
I definitely don't want a raspy sound though!~

TheWrench116

iTrader: (1)

step 1 get flashpro step 2 turn off secondary O2 sensor step 3 crack a beer!

TheWrench116

iTrader: (1)

also. at full throttle top of 3 gear =115 all my buddy heard was tire noise. and he was standing on the side of the road when I went by.

Tomtwtwtw

Any chance you can use the flashpro software to check your emissions ready codes? I'm still curious as to whether or not disabling the secondary o2 merely eliminates the CEL while putting the monitor into a permanent "not ready" state, or if it actually allows the monitor to check and report "ready".

TheWrench116

iTrader: (1)

not sure I have a shop that can check for me though.

SinCity

Couldn't you just plug an OBDII reader to check for "Readiness State" of the rear O2 sensors?

I have been reading a similar subject over at the VW boards. People have stuffed the O2 spacers with steel wool to reduce the velocity of the exhaust gases. Also Google 42DD for their O2 spacers; they are angled.

KenB350z

The only CEL i'm getting is the over boost. Yes, you can check the codes with the flashpro.

mstolars

I don't have the high flow cat and I don't really mind the smell. I only have the hondata reflash and downpipe and haven't had any secondary o2 sensor check engine light pop up.

Richie v6

Just to keep things tame, with out cats your exhaust will smell. You can't smell it on the inside however if you have your windows down and the wind blows just right you can smell it.

No sales coming up for a little while. You can use the coupon code "goodguyrichie" Here is the factory instructions. Pulling the CV shaft makes things much easier and faster.

Flash pro will put the monitor in a non ready state.

The spacer is included.

Tomtwtwtw

This is what I suspected, thank you for confirming.

SinCity - yes, Torque app + bluetooth OBDII can check this (which I have), but I don't have a DP installed so I wasn't able to verify it myself.

Wrench - FlashPro can read the readiness codes. Don't recall what menu it's under (at work, cannot check). Might be good to know going forward though if your local emissions checks your car via OBDII. It varies from state to state, county to county...some places give zero fucks. (makes me jelly)

Mstolars - if you disabled the sensor via Hondata, you will not get a CEL. However reading emissions codes will show it as "not ready", meaning if your local emissions checks through the OBD port, you likely will not pass.

GSJake

Looks like I will fail if I disable it>: This is what my state does..
I guess my only hope is the fouler...

Inspection Elements

Check Engine Light Bulb Test
The inspector will perform a test to ensure that the vehicle's check engine light is functioning properly. This is accomplished by turning the ignition key to the on position without starting engine (KOEO) and looking for the check engine light while the vehicle is running (KOER). The vehicle would fail either portion of the inspection if the check engine light does not illuminate.

Communications
The inspector will connect the testing equipment to the vehicle's onboard computer port (Diagnostic Link Connector). If the vehicle cannot communicate with the testing equipment, the vehicle will be rejected from further testing until this condition is corrected.

Readiness Monitors
If the communication is established with the vehicle computer, then the OBD test can proceed unless unset readiness monitors exceed the testing requirements. For 1996 - 2000 model year vehicles, a vehicle can have up to 2 readiness monitors unset; for 2001 and newer vehicles, only 1 readiness monitor can be unset. If the unset readiness monitors exceed the requirements, the vehicle will be rejected from further testing until this condition is corrected.

Check Engine Light Commanded On
If the vehicle's check engine light is commanded on due to an emission component that is not functioning properly, then the Diagnostic Trouble Codes (DTC) are recorded and provided to the motorist. The vehicle will fail this portion of the inspection if the check engine light is commanded on. The vehicle will need to be repaired and brought back for a reinspection.

Tomtwtwtw

So, on that...the reason you're allowed to have one monitor not ready is because the EVAP check needs very specific criteria to run, and depending on your driving style and climate, it can take weeks or longer. That said, if that IS ready, and the only question mark is a not ready reading on your catalyst heater (or whatever that o2 feeds into), you might be able to squeak by.

There is no harm in trying - generally if you don't pass emissions due to checks showing not ready, you don't get a fail and don't have to pay for another test.

KenB350z

Good thing Oklahoma did away with emissions testIng.

SinCity

In NV, it is an automatic fail if rear "READINESS" is not on. That happened to me on my C63 Stage II (higher flow manifolds and 200 cell cats). Had to get another tune. The strange thing is that I ran the same tune the year prior and it passed. Kleemann and I couldn't figure out why I failed the second year.

KenB350z

Man... Those C63 AMG are beasts!!

mstolars

https://i.imgur.com/cWOiB7V.jpg


That's my emissions test from October last year, o2 sensors show ready with only a fouler on the secondary sensor. They somehow passed me with that stored code too (running too rich), guess it's because the check engine light wasn't on.

SinCity

Just like your build.

TheWrench116

iTrader: (1)

I have no emissions in my county. :|

KenB350z

Me either!!!

rdxchris710

i do but the shop i use does not check haha. safety is the biggest. I could have a side exit exhaust and still pass.

KenB350z

Oh...

TheWrench116

iTrader: (1)

I'm working on that side exit business...

KenB350z

Nice, should we be looking for something right behind the left/right tires?

rdxchris710

I wanted to do a 3" dump right outside the right fender before the running board! I have not had the car on a lift yet but im sure there is some room to make a nice side exit

TheWrench116

iTrader: (1)

right side in front of the rear tire.

TheWrench116

iTrader: (1)

and im using a dual out flowmaster 40 series hope it sounds ok

KenB350z

F the sound, as long as it performs good.

TheWrench116

iTrader: (1)

I like the fact that every exhaust I've ever built has done both exceedingly well. I kinda want to keep it that way.

KenB350z

Oh, I thought you were building a drag exhaust.

TheWrench116

iTrader: (1)

I am but I still have some standards. I've built 5 exhaust systems some from the head back. they usually involve a flow master muffler and they all have a good sound. the last one I did was for a buddies dodge and it sounds mean as hell. it barks when you get on it and its only a 2.5 inch.

I cant wait till he gets me the pipe to do a header back on it. ill make him a custom2.25 drop/downpipes to a custom 3inch Y pipe and then a single 3 inch in the factory location. going to use a SUPER 44 Flowmaster. going to sound insane!!! on his truck.

KenB350z

Nice, I need to find someone to Fab me a Ti exhaust.

rdxchris710

3" dump under the car, and shave the rear bumper. F the ti lol

KenB350z

Hey, just trying to shave some more weight.

shivaswrath

Unsure what happened but wanted to give everyone heads up, I've had the RV6 DP for years. No CEL (would flicker occasionally).
Then 2 Months before inspection boom CEL check emissions.
I bought hondata and flashed without O2s on and it failed in NJ.
Going to see what options are, clearly very frustrated.

Lc46em

Options would be sensor spacer or relocate the 02 further down with a spacer and or install a cat lol not many options when it comes to emissions stuff it sucks.

CSmoney28