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Ok guys if this is a repost forgive me - I was talking to some friends from Colorado EP3 and Club RSX and founf this part from Casper electronics that actually works and better is a plug-n-play deal with the stock pugs to plug into your O2 sensor. They are pricey but anything beats the BigJoshRacing ones that you have to solder- I'm getting one as soon as I can- and I will post actual results from a d-series, others have been K-series but the have the exact part for us - part# 104053 or go directly to here -
O2 Simulator
Glad to help! Laters - Stevo

 
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cool, i think this is a repost but i'm still looking for something that works. let us know how this works out.

 
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WTF is it?

 
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...an O2 simulator is for those of us that have a high-flow cat or test-pipe that turns the CEL light on and richens your A/F mixture because of the new signal to the ECU. This eliminates that by reducing the signal (due to the lack of the cat) and restores the proper fuel settings. Running rich for long periods of time can fowl up your plugs and other problems - but I have driven with mine on for about 10,000 with no problems but its good to have and remove that error code and the light on the dash.

 
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Getting it shipped now, I'll post more guys...

 
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It works very well...It's like a 2 minute install...It's a lot better than the other one that you had to wire it to the ECU

 
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U got it on yours???

 
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Yeah, I bought the other kind when I put my Hp Race Header on....It kept giving me problems, so I found the Casper Electornics one...It's so much easier to install....Just make sure you put it on the cat o2 sensor...I think a member here put it on the primary one and it didn't work

 
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i have had my casper O2sim for about 2 months now with my jackson racing race header and it works great.. only a 2 min install

 
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Hey Spidder, what's your #'s with the 8lbs? My friend is planning on boosting his Si with that supercharger...

 
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^^ ill let you know on the 19th bc thats when its getting dynoed

 
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well i have an o2 sim on my car for a year... i wired it to my ecu...

i used to sell them, but the demand for them wasnt very high, so i stopped

 
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... well I got one of those crappers from BigJoshRacing as well and it didn't work, this one just looks like it won't have problems, not to mention it uses stock -like plugs to plug in, but its in I'll tell you how good it worls tomorrow when I drive around...

 
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can't wait to hear results...

 
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Well, I got it in yesterday night and drove around hard RPMs and let it idle for a long time and everything and no CEL! Normally I see one in 15-45 mins after install and driving hard, so -- it look good and it just plugs right in I love it... I'll keep you up to date if anything goes wrong guys but it looks good. Stevo

 
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Hey Stevo. I'd like to meet up with you at some point and check out this O2 sim in person. I really need to get one as the CEL keeps coming on with my Megan Cat.

 
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Anytime Gangrel, I even have a friend here local that has one that he will give up for $50, which sucks cause I got mine for $80. ...but yeah, AIM me at crackmonkey5189 or email me at stephen_earls@hotmail.com alright? Laters bud...and well get you hooked up as soon as this Sunday if you get back with me, i'll have my friend Tai bring it down for Auto Cross at the World Arena...

 
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Still good guys, I'll tell you if it blows up at autocross---

 
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i bought one WannaBFast's sim and have had no problems since..actually gotten better gas mileage! too bad he stopped selling them! much cheaper than 75 bones...