The G Man Posted November 18, 2014 Share Posted November 18, 2014 I had my last 70 up revved after fitting HFCs still got the error after a while. If it was me, I would take the HFCs out. I could not be bothered with the trouble, also as mentioned, you may ignore a future, more serious error. 1 Quote Link to comment Share on other sites More sharing options...
Ekona Posted November 18, 2014 Share Posted November 18, 2014 Do you think the over enthusiastic acceleration when not fully warmed up could have tripped it? Nah, I'd be absolutely astounded if that caused the issue at all. I mean, in theory the cats might not have warmed up and you could have made the engine run a bit rich at one point by accelerating too much too soon, but it's a very unlikely set of conditions and I've personally never heard of that happening on an NA car. Given they're smaller cats and heat up quicker than OEM, I'm even more prone to discard that idea. I'd leave them in and just fit the spacers, if you have further problems after that then possibly look at removing them but I don't see that happening. Last thing we want to do is make your 370ZN even quieter again! Quote Link to comment Share on other sites More sharing options...
sipar69 Posted November 18, 2014 Author Share Posted November 18, 2014 (edited) Do you think the over enthusiastic acceleration when not fully warmed up could have tripped it? Nah, I'd be absolutely astounded if that caused the issue at all. I mean, in theory the cats might not have warmed up and you could have made the engine run a bit rich at one point by accelerating too much too soon, but it's a very unlikely set of conditions and I've personally never heard of that happening on an NA car. Given they're smaller cats and heat up quicker than OEM, I'm even more prone to discard that idea. I'd leave them in and just fit the spacers, if you have further problems after that then possibly look at removing them but I don't see that happening. Last thing we want to do is make your 370ZN even quieter again! Cheeky git Thanks for the advice. I'll keep an eye on things and see how it goes. I'm just relieved it's nothing serious and that I didn't have to give the local stealership £100+ to diagnose it. Now I can justify splashing out on GTA-V! Edited November 18, 2014 by sipar69 Quote Link to comment Share on other sites More sharing options...
Ekona Posted November 18, 2014 Share Posted November 18, 2014 Yeah, £114 is taking the urine a bit, especially on a new car! 1 Quote Link to comment Share on other sites More sharing options...
sipar69 Posted November 21, 2014 Author Share Posted November 21, 2014 These are quiet good. http://www.ebay.co.u...=item4189618677 Good call Will, may have to get some of those as someone pinched one of mine too I ended up getting the Richbrook anti theft caps. They seem pretty good - the cap just spins when you try to loosen it. 1 Quote Link to comment Share on other sites More sharing options...
GMballistic Posted November 21, 2014 Share Posted November 21, 2014 Glad to read it's sorted for you sipar. I'm with Ekona on this, ....try the O2 spacers first & if they don't sort the problem and you can't justify the UpRev then maybe consider changing back to the OEM. Personally I'd keep the HFC's and go see Mark one day if you can especially if your keeping the car for a good while longer. 1 Quote Link to comment Share on other sites More sharing options...
sipar69 Posted November 22, 2014 Author Share Posted November 22, 2014 Thanks GM. I'll see how it goes. Be a shame to lose the Cats. Quote Link to comment Share on other sites More sharing options...
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