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11-18-2009, 06:16 PM | #89 | |
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I've had decent luck in the past with random technology cats on my previous custom exhausts. |
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11-18-2009, 07:35 PM | #90 | |
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If that makes sense....
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11-19-2009, 11:25 AM | #91 | |
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11-19-2009, 11:49 AM | #92 |
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No, it will not. The O2 sensors are before and after the main cats. The second cat is not part of what is monitored. Hence why they say the second cats are not OBDII compliant.
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11-19-2009, 11:52 AM | #93 | |
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Some tuners will sell you a software file that kills the annoying CEL light. (if it really starts to bother you) Unless you can find (or build) a super effective post-cat 02 simulation device...the car will continue to throw fault codes. You either have to turn it off (via software), or just live with the occasional CEL that pops up. A few of the aftermarket x-pipes out there, will code less frequently than others...but there is no foolproof way of stopping it from occurring 100% of the time. (that I'm aware of) Not YET anyway.
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11-19-2009, 12:44 PM | #95 | |
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11-19-2009, 12:49 PM | #96 |
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I believe you are correct. The sensors are only right before and after the primary cats, so removing the secondaries should have no ill effects.
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11-19-2009, 01:12 PM | #97 | |
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In the meantime, I'm going to pick up some software so I can monitor the car and post any new data points on the forum. With regard to the exhaust leak I may, or may not, have - I need to get under the car and see what I can learn. It's possible that it's leaking upstream at the header connection or the slip-fit from the HFCs to the Xpipe, and just accumulating/dripping at the X. Small leaks are kind of normal with aftermarket exhausts in all honesty, I just want to make sure it isn't a leak in a weld or a crack of some sort. Either way, it is likely unrelated to the SES light. I'll keep people posted. |
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11-19-2009, 02:25 PM | #98 | |
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How easy is it to plug and play with these devices for a novice? Will BMW Service Tech's know we are reading and clearing our own Codes using our own Code Reader? if they know will they care? Any risks from DIY? Thanks.
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11-19-2009, 03:03 PM | #99 | |
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Not sure I agree with you unless data is provided. In fact, the target emissions and stochiometric ratios of the stock car may not be optimal for power but more of a compromise for emissions. In addition, and I have verified this with my own eyes, the A/F ratios get thrown out of whack a bit when you either remove completely or replace the primaries with HFC cats. We monitored the ratios on the dyno. We then tuned the car. Then shut of CEL and did more dynos. Max power was with the CEL OFF. There is more power to be gained with the HFC cats and no CEL than the stock cats and leaving the cats in ready mode.
Just clarifying..... Quote:
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11-19-2009, 03:27 PM | #100 | ||
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11-19-2009, 03:38 PM | #101 | |
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http://www.jlevistreetwerks.com/p698...duct_info.html ...you'll also need the iphone app for $40. Very easy to plug and play. I don't believe techs can tell if you cleared codes. There may be some period of time which must elapse, after clearing the code, before the car is ready for inspection. I'm not sure, perhaps someone else can chime in. I know this was a reality on several ECUs in the mid-2000s. |
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11-20-2009, 08:09 AM | #103 |
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My local Costco has a OBDII reader that can scan and clear codes. I think it was 34 bucks or so...
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11-20-2009, 10:17 AM | #104 | |
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Hi Singletrack,
I'll have to scan my dyno printout. I have the Fabspeed HFC setup and Eisenmann Sport exhaust. I had the Fabspeed tune, but due to CEL issues and my DCT update wiping it, I had Jeremy at Powerchip tune the car on the dyno during their recent NJ visit. I felt that me being able to flash myself in the event of an inspection event was worth it. Powerchip has the mobile flash kit they send out. The car picked up about 19 HP and 22 ft/lb after the flash. We gained only about 2 hp over the baseline Powerchip file that was already designed for cars with my exact type mods. Quote:
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11-20-2009, 10:56 AM | #105 |
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I had the "increased emission" occur twice and took it into the dealer, first time they said it was nothing and reset the computer but came back after a week or so. Took it back to the dealer found out that I had bad coil on the #3 and replaced it, no issues now.
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11-20-2009, 01:38 PM | #106 | |
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11-20-2009, 01:40 PM | #107 |
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Yes. I have the software and it seems pretty decent in playing around with it. I have yet to receive the hardware. I'll post a review once I have everything. There are certainly cheaper AND more robust solutions out there. I just wanted something I could keep in the glove box and fire up in seconds.
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11-23-2009, 10:26 PM | #108 | |
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Anyway, with regard to this issue, I checked and there are no codes in there right now. I do show that the "Oxygen sensor monitoring" is showing a status of "supported and incomplete" under OBD readiness. I did some searching and found the following: http://www.europeantransmissions.com...0Procedure.pdf All the other tests supported by the ECU under "OBD monitoring" are complete. So, based on that bulletin, it appears I need to drive at a constant 20-30mph for 3mins, 15 seconds, without exceeding 3k RPMs to complete the 02 readiness monitoring. Heh - not sure when that will happen. Whether or not you will pass inspection with a monitor, or multiple monitors, set to incomplete varies from state to state, and even county to county. That link also describes the logic by which you may have a code, but no SES light. I thought that might be of help to some. I have 200miles on the car since clearing the codes; I'll keep monitoring. Actually, right now I'm logging long and short term fuel trim to see how the ECU is handling the exhaust : ) Robo - did you try out those spacers/adapters yet? |
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11-24-2009, 07:38 AM | #110 |
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an update...the car threw the code again on friday. i got the bung extenders that jeremy sent, but i have yet to install them. hopefully they fix he problem
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