secretstar07979 Posted September 4, 2019 Posted September 4, 2019 Hello all, I have a 2018 370z Nismo. I was not happy with the stock exhaust tone feeling it too quiet and too subdued for such an aggressive looking car. Having spent a lot of money on the Nismo including the dual exhaust I don't really wish to rip off the new exhaust and was hoping I could make the existing system louder. Upon advice I had hi flow cats fitted which unfortunately has caused the exhaust to "rasp" at high revs. Also the engine light has now come on which of course will be the lamber sensor. I've been quoted £40 for 90 degree spacers than may fix the engine light issues but isn't guaranteed. So I think my questions are: What is the best way to bring out the grunt with the stock Nismo exhaust? Can it be done or do I need a whole new system. What about tailpipes or decatting it? Do I need to worry about loss of back pressure? Performance is important to me and I don't want to lose any grunt. What are the chances the spacers will fix the lamber sensor issue? I don't want to throw £40 at it for them to have no effect. How often do these things actually work? Thank you for your help I really appreciate it. Adam Quote
Payco Posted September 4, 2019 Posted September 4, 2019 (edited) Be done with it and treat the car to an Ark True Dual Grip exhaust. It’s the perfect system, sounds as the car should and looks stunning from behind. Great burble, no drone or rasp. Had one on my 350z and it was the first thing I did to my Nismo. Edited September 4, 2019 by Payco Quote
Jack94 Posted September 4, 2019 Posted September 4, 2019 If you're not happy with the rasp from HFCS I wouldn't reccomend decats, that'll just make it worse. Also you'll probably then need a remap to turn off the rear sensors and cure the engine management light. You could try gojng back to oem cats then replacing the back box with a pair of short tails. They're a popular choice and you can get resonated or non resonated depending on what sort of volume you're after. As Payco has said, you could just go all out and replace the whole oem system with an aftermarket one. That'd probably be my choice because there's loads to choose from depending on your needs/budget that are far superior in looks/performance/weight/sound compared to oem. If you're sure you don't want to get rid of the nismo exhaust you could look into opening up and gutting one of the silencers such as the back box. Not sure if this has been done before or how it would sound but it's the only way to make it louder other than HFCS/decats. 1 Quote
Wheels 370z Posted September 4, 2019 Posted September 4, 2019 I simply removes the back box and fitted short tails adam. Feedback has always been consistently good - not daft loud but good rumble on acceleration. Bob at tarmac sports sorted mine. Quote
Payco Posted September 4, 2019 Posted September 4, 2019 Happy to send a video clip as I have done before of the ARK if you PM me your e-mail address. Quote
secretstar07979 Posted September 4, 2019 Author Posted September 4, 2019 Thanks for your replies so far. My email is adamfoddy1@gmail.com Quote
secretstar07979 Posted September 4, 2019 Author Posted September 4, 2019 1 hour ago, Wheels 370z said: I simply removes the back box and fitted short tails adam. Feedback has always been consistently good - not daft loud but good rumble on acceleration. Bob at tarmac sports sorted mine. How much did you pay for the short tails please? Quote
secretstar07979 Posted September 4, 2019 Author Posted September 4, 2019 1 hour ago, Payco said: Happy to send a video clip as I have done before of the ARK if you PM me your e-mail address. Do you have OEM cats on your car? Quote
Wheels 370z Posted September 4, 2019 Posted September 4, 2019 (edited) 25 minutes ago, secretstar07979 said: How much did you pay for the short tails please? Think around the £250 -275 mark #buster can confirm. They're the Tarmac versions. CORRECTION - Just checked my bank statement - they were £499. Edited September 4, 2019 by Wheels 370z Quote
Payco Posted September 4, 2019 Posted September 4, 2019 16 minutes ago, secretstar07979 said: Do you have OEM cats on your car? Yes sir. Quote
secretstar07979 Posted September 4, 2019 Author Posted September 4, 2019 What do you think I should be asking for a OEM Nismo exhaust? Car has only done 5000 miles. Quote
Payco Posted September 4, 2019 Posted September 4, 2019 (edited) I sold mine with 500 miles on it when the car was 3 months old for £400. Put it up for more but had no interest for 3 months. Problem is its not really an upgrade due to its sound...I sold it to a 370z owner who just needed a new exhaust. Edited September 4, 2019 by Payco 2 Quote
GranTurismoEra Posted September 4, 2019 Posted September 4, 2019 the best sounding ZED at Ace Cafe had Tarmac Short Tails. You dont need a full system. 2 Quote
Whitevanman Posted September 4, 2019 Posted September 4, 2019 love my short tails, if you are willing to travel abit you could listen to mine, I dont mind meeting you some of the way..... Quote
GranTurismoEra Posted September 4, 2019 Posted September 4, 2019 5 hours ago, Whitevanman said: love my short tails, if you are willing to travel abit you could listen to mine, I dont mind meeting you some of the way..... I was referencing your car sir. Yours sounded the best in my opinion. Goes well with the car. Reminded me of my AAMs 1 Quote
secretstar07979 Posted September 6, 2019 Author Posted September 6, 2019 On 04/09/2019 at 18:30, Whitevanman said: love my short tails, if you are willing to travel abit you could listen to mine, I dont mind meeting you some of the way..... Are you on Facebook mate? Quote
Whitevanman Posted September 6, 2019 Posted September 6, 2019 3 hours ago, secretstar07979 said: Are you on Facebook mate? no mate im not…. Quote
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