andy_370z Posted May 30, 2023 Share Posted May 30, 2023 (edited) Hey everyone! Only had my 370z for a few months and this is my first post. Im looking for a bit of advice I've just had a gemini invidia exhaust fitted and the sound is awesome but i have a problem with the car that i didnt notice before. When slowing down and foot off the throttle the revs drop suddenly and bounce down to below idle then jumps back to above idle this causes the car to stutter slightly. The car drives like this under 30mph but over 30 its fine. Its never cut out and accelerating is fine and idle speed is fine. Its more noticeable in auto mode. Has anyone else experienced this could it be the exhaust is not fitted right (vaccum leaking) or will a tune fix this. Thanks guys in advance Edited May 30, 2023 by andy_370z Quote Link to comment Share on other sites More sharing options...
Andy_Muxlow Posted May 31, 2023 Share Posted May 31, 2023 Hi and welcome along buddy. Have you got a video of this for reference? I am not sure I could hep you out but it does sound a little strange. I have an Invidia Gemini on my 1st 370z and had no issues at all with it even when I had high flow cats fitted. I would hope it is something simple though. Quote Link to comment Share on other sites More sharing options...
andy_370z Posted June 1, 2023 Author Share Posted June 1, 2023 hi Andy Thanks for the reply Yeah its a strange issue im woundering whether a clogged up cat would cause this i drove home form work today and put my foot down a little and im gettting a strong sulpher smell. I also noticed, if i have the AC on the revs dont drop as low. Quote Link to comment Share on other sites More sharing options...
Willsy1980 Posted June 1, 2023 Share Posted June 1, 2023 Could be wrong but potentially a blocked PCV ? Quote Link to comment Share on other sites More sharing options...
andy_370z Posted June 1, 2023 Author Share Posted June 1, 2023 Thanks i ll check the pcv valve would that post an engine light code though. I have no warning light. Quote Link to comment Share on other sites More sharing options...
andy_370z Posted June 30, 2023 Author Share Posted June 30, 2023 Hi all a quick follow up on this issue. Ive brought an obd scanner and have one DTC code P1585 Throttle Control Unit Malfunction. So im guessing this is my problem. Anyone know if this is a easy fix or should i take it to the Nissan. Quote Link to comment Share on other sites More sharing options...
GranTurismoEra Posted July 5, 2023 Share Posted July 5, 2023 Can give Tarmac a call and he should be able to advise Quote Link to comment Share on other sites More sharing options...
HEADPHONES Posted July 8, 2023 Share Posted July 8, 2023 Welcome to Zed life. Sorry to hear that you have problems already. Hopefully it's a cheap fix Quote Link to comment Share on other sites More sharing options...
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