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Old 08-02-08, 07:12 PM
  #1036  
Gernby
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Originally Posted by uschardcor
i have a 2006 350 and still just dont think its been thoroughly tested so far. i thought the v2 was supposed to have more hp gain with light loss in tq but i don't believe that was the case, could be wrong
There's not a whole lot of reason to say the V2's aren't better than the V1. A conclusive test of the V2 headers still needs to be done without CEL's, and with datalogs of air / fuel ratios.
Last edited by Gernby; 08-03-08 at 06:42 AM.
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Old 08-02-08, 11:06 PM
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dinaldo
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Hey, is the company out of business? I've checked the website and it always says that product is out of stock, called the company and never gotten an answer, and emailed the company to no answer as well.
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Old 08-03-08, 09:21 AM
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nabbun
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I think Daniel's just busy.
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Old 08-05-08, 03:55 AM
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Got a set here, sim incl: https://www.clublexus.com/forums/sho...d.php?t=368557

Originally Posted by dinaldo
Hey, is the company out of business? I've checked the website and it always says that product is out of stock, called the company and never gotten an answer, and emailed the company to no answer as well.
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Old 08-05-08, 01:49 PM
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Originally Posted by Gernby
There's not a whole lot of reason to say the V2's aren't better than the V1. A conclusive test of the V2 headers still needs to be done without CEL's, and with datalogs of air / fuel ratios.
Like I've said before I have not had any problems with my sim so I could test them.
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Old 08-05-08, 06:52 PM
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Originally Posted by Gernby
Thanks for the update, but didn't you datalog the AFR before and after the headers?
yes we did that too. It's all the same.
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Old 08-11-08, 03:45 AM
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So what is the final verdict with v.2 headers for the 350? HAvnt the tests been inconclusive with regards to HP? i know torque has greatly improved but is there still hope for v.2?? or are we now waiting on v.3? I know daniel is quite busy but is there even talk of a v3?
Last edited by ndk83; 08-13-08 at 10:11 PM.
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Old 08-11-08, 05:54 AM
  #1043  
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Originally Posted by combfilter
yes we did that too. It's all the same.
I don't think it's possible that the AFR curves could be identical. The headers would have to change the flow characteristics somehow, somewhere for better or worse.
Last edited by Gernby; 08-13-08 at 05:33 AM.
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Old 08-11-08, 04:49 PM
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i dont have problems with my sim either. i could do some testing
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Old 08-12-08, 07:14 PM
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^^what year is your car? As you know already 06s are fine with the SIM.
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Old 08-13-08, 06:47 AM
  #1046  
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Originally Posted by iSuxeL
^^what year is your car? As you know already 06s are fine with the SIM.
I found out something interesting about my sim. With my OBDII reader connected I can see that no CEL are pending or showing on the dash. However, the emission status LED on my code reader is showing that the ECU's internal test of the "O2S" is not completed.

I have a 2007 IS250 and have driven more that 700 miles since the battery was reconnected after installing the headers. All the other internal testing (EVAP, EGR, etc....) has been completed during normal drive cycles.

I am 100% sure that the sim is wired correctly but I think its function is preventing the ECU from performing this O2 diagnostic test. It is not enough of an issue to trigger a CEL (MIL) but still the ECU knows that something is wrong.

I plan on disconnecting the sim to see if the car performs differently even though the CEL will be showing on the dash.

Regards,
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Old 08-13-08, 06:57 AM
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Originally Posted by Gernby
I don't think it's possible that the AFR curves could be identical. The headers would have to change the flow characteristics somehow, somewhere for better or worse.
That's because you doubt every thing Greg.

see Joe's post at

https://www.clublexus.com/forums/sho...postcount=1010

or better yet, PM him.
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Old 08-13-08, 07:29 AM
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Originally Posted by combfilter
That's because you doubt every thing Greg.

see Joe's post at

https://www.clublexus.com/forums/sho...postcount=1010

or better yet, PM him.
I doubt for good reason in this case. Joe's summary was informative, but mentioned nothing about air / fuel ratios. The only bit of info we've gotten about it has been you saying they were the same, which would be a very strange result.
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Old 08-13-08, 07:30 AM
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Gaugster, I think you should just wait a while longer to check the readiness registers again later. If the ECU detected a problem, it would show a problem.
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Old 08-13-08, 07:48 AM
  #1050  
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Originally Posted by Gernby
Gaugster, I think you should just wait a while longer to check the readiness registers again later. If the ECU detected a problem, it would show a problem.
Maybe - But now that I think about it, I have had the sim installed for around three months. Over two month w/o the headers as I was waiting for a modification so they would fit with the AWD.

I have some intersting results from a day at the dragstrip but I don't know what to make of it really. It starts on post # 279

http://my.is/forums/f167/is250-heade...ml#post5504664
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