New to me 350z Nismo #568 - Nissan 350Z Forum, Nissan 370Z Tech Forums
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post #1 of 3 (permalink) Old 08-04-2016, 09:25 PM Thread Starter
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New to me 350z Nismo #568

Hi everyone,

First post on the Z forums in which I figured I better introduce myself before asking questions! Lol. I bought a 2007 350z Nismo (#568) back in May with only 11k miles on it. Mileage doesn't change much as I only really drive it on weekends and in nice weather. I love the car in every way possible, it is my pride and joy. I previously owned a Subaru WRX/STi for the past 9-10 years in which I was lucky and didn't have any of the MAJOR common failures noted with those cars. The three WRX/STi's I owned had full bolt ons and were on E85. Fun cars, but they became more of a headache to own as time went on. So that leaves me here! Anyways, all i've done to the Z so far is a full suntek clear bra wrap, K&N typhoons, invidia gemini CBE, and fast intentions non resonated test pipes. I did, however, have the SES light come on after the Fast intention test pipe install recently (I did not use an impact at all). I cleared the ECU using the gas pedal/ignition sequence and unplugging the battery terminal(s) over night. It continues to pop on after about 40 miles of driving. The codes are reading P0430 and P0420. This blows me away as fast intentions guaranteed no SES and I still got one anyway. Also the fact that most do not have this issue when installed properly (in which I did). My question is, with these codes, am I going to see any loss in power? I don't think its going into limp mode so I assume not. Also, any suggestions on alternative ways I can try to get the SES off? try non foulers? (I will post this in the appropriate section as well). Thanks for any input! Here is my car.
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Last edited by Mitch; 08-04-2016 at 09:51 PM.
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post #2 of 3 (permalink) Old 08-20-2016, 06:44 PM
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Hey Mitch, welcome to the forum. Your Z is definitely not going into limp mode as you'd certainly know about it e.g. no power at all and no speed to speak of. As far as i understand it the P0420 and P0430 codes usually come on because the exhaust gases are passing through the test pipes too fast because the cats are not there to slow them down. I do know that a few owners have added washers/spacers in order to push the sensors further back thus reducing the amount of gases flowing past them. This has eliminated the codes from being initiated. I hope this is of some help to you.
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post #3 of 3 (permalink) Old 09-04-2016, 11:19 AM
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Welcome to the site, Mitch.

I'm not sure why it's doing that, but your ECU should learn on its own how to deal with the new exhaust setup. Give it some time and see what happens.
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