I’ve got the Cobra Catback along with de-cats on mine and it is very noisy.

Call Fast Intentions & get on the list...heck; with the SC you can get Long-Tubes & TDX!
You won't regret the sound!!!

The aam short tails have a perfect sound if you pair them up with Motordyne art pipes (resonated test pipes)

Hey Guys I keep getting a P0300 code coming up. This code was happening a lot when the cupler was loose or came off but after putting on the new clamps that code stopped until yesterday. I was driving in the back roads having fun and boom the check engine light came on. I checked the clamps and they are holding and the Z is running great with consistent boost. Here is a screenshot of what it could be. I really think there might be a small leak in the cupler. I’m taking the car to the shop on Tuesday to take off the resonators and then the tune and Dyno on Thursday. Also I have to stick with the stock cats because of my stillen supercharger. They said the HFC will create way to much heat and test pipes were also a no go. I’m looking for a cat-back exhaust that sounds great without the aid of HFC, test pipes or headers. I got to stick with the stock cats. Thanks everyone for the input.

P0300 NISSAN - Cylinder Misfire Detected Random Cylinders

Possible causes
Faulty spark plug (s)
Faulty ignition coil (s)
Clogged or faulty fuel injector (s)
Intake air leak
Fuel injectors harness is open or shorted
Fuel Injectors circuit poor electrical connection
Ignition coils harness is open or shorted
Ignition coils circuit poor electrical connection
Insufficient cylinders compression
Incorrect fuel pressure

Do you know if the shop put in colder heat range plugs w/a tighter gap?
As the Turbo boosted cars do this; unsure on the Stillen SC setup.

I will ask them on Tuesday.

So looks like my motor is blown. I’m so upset That I haven’t even wanted to post what happened. My car is BRAND NEW under 400 miles. I haven’t really got to drive it just to the shop and back. As soon as the Stillen kit and tune was put on I was getting P0300 code plus idle was up and down. When I took it to PSI they said there not going to tune it until they find out what is wrong. They got a P0304 code. They checked compression on cylinder 4 and it was super low

This is unfortunate and reason why I do not want to mod my 370Z. Is it covered under Nissan new car warranty or the mods voided the Nissan warranty???

Good luck,

Ian B

I haven’t even gotten that far. I need more info which I haven’t gotten yet.

Very sad to hear. Breaks my heart.

Going forward, why do you need a new engine? Can you find a decent shop that can pinpoint exact failure and replace parts as required?

Did you check oil and oil filter for metal?

Without removing engine, you can boroscope the cylinders and MAYBE remove oil pan and check bottom end.

I know this is happening very quickly but just trying to give advice and you can refer to it at your pace.

In the end, if it's cheaper to replace engine, so be it. However, I'd look into it a little more.

Good luck and keep us posted. We want to hear some good news.

ZZ

It’s cheaper for them to replace the motor because the other way requires way to much labor time. I don’t know anything further until they call me. They first have to see exactly what is wrong and what to replace im guessing. As soon as I know more I will post it. Besides the Extent of the damage I want to know what stillen has to say.

Ok UPDATE! Sorry it’s been so long but it took forever to fix everything and didn’t want to post until the outcome of what Stillen was going to do. It’s been a real nightmare. At first Stillen didn’t want to help, claimed I didn’t fill out the warranty or pay for it, (even though I have copies of it), and they denied everything and were no help at all. SINCE then they have took responsibility and are paying for all damages and sent an updated tune for a 2018 Nismo. The shop (ARauto) Had my back the whole time and went above and beyond. Also Eugene from this forum has been HUGE. My car should be done this week. When I do get my Nismo back I can go more in depth as to the damages and outcome including what tune I’m using and so on. I took a brand new 2018 Nissan 370Z Nismo into the shop to get a stillen supercharger and I still don’t have my car back. I wouldn’t suggest putting on a tune unless it’s verified and proven. Stillen has come through and has paid for all damages but it was NOT an easy road. I still have not gotten a phone call with a simple sorry yet. Anyway will update and answer questions as soon as my ride is home. Thanks.

Can you say what constitutes "all damages" are they paying for your new motor? all labor costs? Whats considered all damages?

Also, seems as tho, unfortunately, those telling you not to go with Stillens tune time and time again were right, not trying to throw salt in the wound here. We've all been down a similar road at some point, I wish you the best of luck with it!

Also, do you have an AFR Gauge? I would suggest getting one if not, this way you can see how good the tune is on the fly and if the tune slips you know before its too late. I learned this the hard way on my turbo 240sx... and, I too, had to replace a blown motor...

So “all damages” means they paid for all the parts needed and the labor. Uprev paid half and Stillen paid half. I went with Ecutek got the sensors, AFR gauge, hardware and tune. Took a while to fine a Ecutek calibration that would work. Kept getting a VVEL code that would not go away. Come to find out Ecutek won’t work with the 2018 370Z Nismo either. When we would load the Uprev tune the problem was gone. Ecutek is aware that there tune is not completely compatible yet. Good news though, as everything is running fine on the updated tune that stillen sent us. No codes and everything looks fine. The shop is putting on some break in miles on the motor but so far all is going well. Once break in is finished, They will get the car into boost to make sure everything checks out there and do some logs as well via uprev. Will post update when I find out more.

So I jumped the gun saying that ECUTEK was causing the actuator error. It’s also doing it in Uprev so they narrowed it down to a bad actuator. Now they have to pull the motor and blah blah blah. I’m only going to update when everything is done. I like to thank Eugene from Infiniticare.com ecutek master tuner for Northern California. He’s been a huge help and been there every step of the way.

Seems like headache after headache, I really hope it all works out in the end for ya and you get to drive the car and enjoy it at some point !!!!

So once the car is back up and running, you're getting a complete custom tune, right? You're not going to run a Stillen tune at all?

So the updated Uprev/stillen file for the 2018 Nismo 370z works fine. No problems at all. My car is fixed and running perfect. Thanks to Martin from AR Autoservice they fixed and replaced the rings that were bad and have been there for me and my Nismo from day one. Great customer service and relations. Anybody in the Portland area that has a Nissan Z I highly recommend them. Ask for Martin at (503) 697-3311‬ he’s great. Now onto the tuning and to answer your question. I went with ECUtek cause I met a great master tuner Eugene (ByThaBay) who is super smart and knows what he is doing. He’s been tuning my Nismo remotely for the past week and it runs fast and strong. He’s the best. He’s info is Facebook.com/infiniticare and infiniticare.com or his handle on this forum is ByThaBay. So when he’s finished I will update here

Good to hear you’re ditching the Stillen tune. That’s most likely why the motor popped, if it wasn’t the crappy air to water setup. You ditched that too, right? I would think you would only want to replace the motor once.


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it’s not needed at this time cause the tune takes into account everything to keep the Car safe and there are no issues. Every time I drive I’m logging and sending it to my tuner. The car is running super strong and no problems. The idle is perfect and Consistent and so is the power.

Wait until it heat soaks

Its needed the instant you take the stillen kit out of the box. The only good part of that kit is the blower. Get in touch with topgunz before you go for your third motor.


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:iagree:
Seem's like i've read that back a way's?
like comment #2

But I’m on ECUtek now NOT Uprev.
The hardware is fine.

Your choice of tuning software has absolutely nothing to do with the fact that the ecu has no clue what temp the air coming into the motor really is since Stillen put the maf sensor before the compressor, and then used an undersized air to water intercooler. Good luck, but understand that you’re playing with fire as it sits right now. Try and avoid boost when it’s hot out and don’t do a bunch of back to back long pulls.

If you’re dead set on not fixing the problems with the kit, look into water/meth injection.


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UpRev is a perfectly acceptable tuning software. Sure Ecutek is better and has a few nice features but it can’t makeup for an ill designed kit. Chuck listed the Stillen kit issues.

Best of luck to you and hopefully you don’t have anymore issues. Whatever you do, don’t try for more power.

Thank you for your guys concerns. I do appreciate it. I will update you guys on the tune progress. Thanks.

I can vouch that tuning these kits on Ecutek on Speed Density with an IAT sensor is very doable and that Eugene has the best implementation of the safety features needed in order to run this stock kit.

Granted, power isn't as good as A2A but is it still very reliable when tuned correctly.

I wouldn't have believed it last year but after driving Eugene's personal Stillen SC'd G37 and checking out the logs, it's amazing how it feels like a factory tuned car.

With all due respect to Cadoo we feel it is important to clarify a few points and explain to the community exactly what happened. I do not believe that Cadoo is deliberately misinforming the community but there are some statements made in his posts that are incorrect and need to be clarified.

Cadoo stated “At first Stillen didn’t want to help, claimed I didn’t fill out the warranty or pay for it, (even though I have copies of it), and they denied everything and were no help at all.” This is incorrect. While Cadoo may have purchased the optional supplementary powertrain warranty his shop did not. We did not sell the kit to Cadoo it was sold to the installation shop and when completing our supercharger waiver form during the order process they elected not to purchase the warranty. Hence the reason we stated that there was no supplementary warranty coverage. Additionally, we worked with a third party shop to get the customers vehicle moved to the front of the line of their work load and to begin the tear down process. Our reason for wanting to do this is because a third party shop would be able to give a fair and unbiased explanation of exactly what occurred. Either Cadoo or his installation shop elected not to do this.

STILLEN and UPREV continued to work together in an effort to understand what occurred with this vehicle and why the engine failed. In doing so, UPREV studied the STILLEN tune file and confirmed that there was nothing of concern in the file. From there they took their in house 2018 test mule and loaded the STILLEN tune file on to this vehicle. At this time it was discovered that due to a technical error in the UPREV software the timing adjustments were not actually being made on 2018 vehicles. The adjustments were available to be made at the time the tune file was created but when the tune was loaded to the vehicle they were not actually being accepted.

Immediately upon discovering this UPREV stated that they were prepared to stand behind their product and made STILLEN the offer to retrieve the vehicle, replace the engine and ship the vehicle back to the customer at no out of pocket expense to the shop or the customer. Unfortunately, the shop performing the work had already replaced the engine so this was not possible and/or necessary. Regardless, UPREV has agreed to reimburse the shop for their full invoiced amount.

STILLEN and UPREV have been working together for a decade with excellent results. STILLEN is the only company in the world with a CARB exempt forced induction solution that also features an optional supplemental 3 year/36,000 mile warranty. We stand behind our partner in UPREV and we recognize that without their work and support over the years STILLEN would not have been able to achieve these goals. A mistake was made but they have done the right thing and they will be reimbursing the shop for their expenses. STILLEN has also changed our procedures in sending out tunes for 2017+ vehicles. The issue only seems to have affected 2018 vehicles but just to be safe we went back one year in case there were any “running production changes” made by NISSAN that may have affected this. Going forward STILLEN sends out a base file that is to be tested by the end user or the shop performing this installation prior to installing the supercharger system. This base file loads various parameters that are then monitored during a data log to be completed after the test file has been loaded. During the review of the data log we are able to see if all of our desired changes have taken effect. Once we confirm the changes have taken effect correctly we then create and distribute the appropriate supercharger file and approve the shop to proceed with the installation of the supercharger.

Both UPREV and STILLEN strive to offer the best Customer Service possible. No company is perfect and mistakes can happen but both companies work hard to right the wrongs and to take care of our customers.

Well thought out and easy to read response. All vendor representatives take note.

Thank you for sharing.

Kyle, many thanks for the clarification.
With regards to Stillen Customer care, I have been rather dissaponted by the lack of support from Stillen regarding the faulty throttle extension harness/lead on my car. This harness has become faulty within the first 12 months and I understand that Stillen have now modified this using larger wires due to previous issues. I have emailed Stillen on a number of occasion regarding this harness/lead and whether it will be replaced under warranty. Initially I did not receive any responses to my emails, however recently following a number of emails, Dean has responded informing me that he is able to sell me the complete set of MAF Extension harness/leads along with the throttle extension harness/lead for around $139 + shipping +Duty. Surely my faulty throttle extension harness/lead should be replaced as warranty/goodwill as it’s a known problem?
Thanks
Richard

Oh wow! So I signed an agreement not to talk about what really happened. So since you are now posting your “Version” of what happened am I allowed to post mine? Kyle sorry but That’s your “version”. Anyway in the END Stillen and UPrev stepped up and handled everything Professionally.

New video of the Nismo. On ECUTek tune. https://youtu.be/4caH9BeisnQ

^Congratulations with your results and enjoy your Nismo Z!!