Aftermarket headers in Ontario

[BatStig]

Originally Posted by wparsons

To say Sasha's dyno is a heartbreaker is an understatement! That's easily ~190whp on a dynojet.

I forgot to ask when I stopped by the track, what mic are you using? I need to pick up an external one and want the cheapest one that works well. Doesn't need to be studio quality, just better than the built in one being buffeted by wind.

Another question, up the back straight and across the front... are you hitting the limiter in third, or short shifting a bit? I typically run right into the limiter at the top of the back straight, across the front straight, and almost brushing it heading down the hill towards the hairpin at the bottom. If you're needing to shift, you're probably going another ~10km/h faster on the two straights. Good testament to the header and tune!

For the mic, I'm using this little beauty. 20' cable means the mic can be wherever you want it regardless of camera placement. Mine is on the rear tow hook above the exhaust. [ame="http://www.amazon.ca/Audio-Technica-ATR-3350-Omnidirectional-Condenser-Microphone/dp/B002HJ9PTO/"]Audio-Technica ATR-3350 Lavalier Omnidirectional Condenser Microphone: Amazon.ca: Computers & Tablets[/ame]


As for my shift points, it's both. On OEM rubber (that's all I ran for the last three years) when hitting my marks I found myself running out of revs. Now that I FINALLY upgraded my rubber it is happening regardless of how good/bad I'm driving. Also, this year I decided to have the shift light turning on at 7000rpm. Not that I'm watching it or even notice it. I'm trying to be a little nicer to my baby.

The important bit we both forgot about during our meeting was that I probably should have taken you for a spin so you could see for yourself what the header sounds like in car on the street.

[D_Thissen]

Originally Posted by wparsons

To say Sasha's dyno is a heartbreaker is an understatement! That's easily ~190whp on a dynojet.

Is that ever a heart breaker!! Here are the numbers for my FRS on another Dynapak in the GTA.


Drop in filter, catless frontpipe and Q300
http://s616.photobucket.com/user/thi...t.jpg.html?o=4

[wparsons]

Originally Posted by BatStig

The important bit we both forgot about during out meeting was that I probably should have taken you for a spin so you could see for yourself what the header sounds like in car on the street.

Yeah, I thought about that on the way home... ah well, next time!

[drewbot]

Haha, sleeper Hyundai with UEL's. Yes, local guy

[ame="https://www.youtube.com/watch?v=Xg9TeGodpug"]UEL Header Hyundai Elantra free-rev - YouTube[/ame]

[DM7]

Originally Posted by wparsons

With a high flow cat you might pass, but depending on how good it is you might get a CEL for cat efficiency. That CEL would be a fail.

All that said, you can disable the CEL in the tune and run 100% catless and the OBD test will be happy. Not legal, but they won't find out.

Originally Posted by BatStig

I can't give any definite info on the legalities but, as far as I know, through the magic of EcuTek I will pass the OBD test. Visual or any other BS I don't know.

Just looking for some clarification here.

The emissions tests I've had done on my OBDII cars (model year 2000 and 2003) require more than just "no CEL" to pass. The ministry is also checking all the emissions monitors on the ECU.

Will disabling the CEL also set the applicable emissions monitors to a "ready" state?

My best guess would be that the emissions monitors will remain in a "not ready" state (emissions test fail) even though no CEL will be generated (because they were disabled). Too many emissions monitors in the "not ready" state will cause an emissions test fail.

I'm not a technician nor do I work for any auto makers (read not currently), but I do understand a little bit about how ECUs use drive cycles to test for any malfunctions the car may be experiencing. With the monitored catalytic removed, the applicable drive cycles may never be able to determine a "ready" state. It will probably just stay "not ready" unless it can be hacked to say otherwise.

I don't have my FR-S on the road yet, (will be a few more weeks before I do) but when it is I will be installing my catless EL header and running the corresponding OFT tune with the catalytic efficiency CELs disabled. I will then use an OBDII reader to check the emissions monitors (same ones the ministry checks) for "ready" and "not ready" conditions. If anyone is able to do this experiment now please do so, I will click thanks on your post hahaha. Otherwise I will report back in a couple of months.

[BatStig]

@DM7 I have no idea, but I look forward to your results. I'm going to send my tuner an email to see what he has to say about this. I think I have a good OBD2 reader somewhere. Good time to do some digging.

[wparsons]

The ready state of the overall system and ready state of an individual sensor aren't quite the same thing. The cat efficiency system needs both O2 sensors be present and ready, and the cat working, to be marked as ready.

The ready state of sensors and CEL's go hand in hand. You can have sensors not ready without a CEL (my wife's bone stock Camry failed on that), but you can't have a CEL without the sensors being ready.

The ready state of a given sensor is determined by if the ECU has enough data in recent drive cycles to trust the sensor. If the car is only driven on really short drives and never fully warms up, the O2 sensors and MAF sensor won't be marked ready. Under the new test system, you'll fail because of that. You won't get a CEL until the ECU is ready to believe the sensors, so they require all sensors be in a ready state so you can't clear a CEL in the parking lot and go pass.

Now if you all sensors reporting as ready and have no CEL you'll pass. I'm not sure what exactly the tune does when disabling a CEL, but it also disables the affected system from reporting as not ready. For the cat efficiency, my best guess is that it changes the threshold to some impossibly high value so that the ECU always thinks the cat is working, even if it isn't present.

Since, to the best of my knowledge, the test doesn't actually monitor calculated values (like cat efficiency) as long as the ECU isn't reporting any issues you'll pass, and disabling the CEL's tricks the ECU into thinking everything is peachy. It doesn't turn off the light, it stops the ECU from even thinking there was a problem. You still need to meet the drive cycle requirements for the ECU to trust the sensors. You can also use an app (I think torque can do it?) to force ready states, but that's a short term solution to be done in the parking lot.

Also kind of interesting, you can pass with a CEL as long as it's not related to any emissions systems.

[Mr.Impreza]

Not too sound like a chicken.....more like an organic chicken...but I might just do an exhaust and tune even though the gains are not as much cause the headers seem really loud -___-

That Hyundai is insanely loud.....

[RedFR-s]

Originally Posted by Mr.Impreza

Not too sound like a chicken.....more like an organic chicken...but I might just do an exhaust and tune even though the gains are not as much cause the headers seem really loud -___-

That Hyundai is insanely loud.....

The loudness depends entirely on the set-up you pick. I've got a Perrin catteeed and resonated front pipe, Perrin OP, and Perrin Cat-back with a top speed EL header and it is far quieter than a bunch of guys i know with just cat-backs. I picked that set-up specifically for volume because I work stupidly early and don't want pissed of neighbours messing up my car lol