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post #1 of 3 (permalink) Old 08-20-2015, 10:34 AM Thread Starter
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New Osiris tune and high flow cats

I recently installed high flow cats to go along with my other mods, (spacer, dual exhaust, under drive pulleys, Pop charger) and capped it off with an Osiris tune from UpRev. I worked with Randy to refine the tune, specifically looking for low end torque. He did a great job. The tune woke up my other mods and now I have the output I expected. No I have not had the car on a dyno, however, it does respond much better and at launch I need to be careful not to over rev (past 3000 rpms). If I take the rpm's to high I will experience some clutch slippage, something I never experienced prior to the tune.

I am the second (adult retired) owner of my 05 350z touring roadster with less then 34000 miles. The low end torque I now experience is impressive and yes it does carry right on through the power band. I was not sure what to expect with the e-tunes, but it work out great and it is well worth the time and expense. The turn around time for the e-tunes in most cases was hours.

I have no way to confirm or even guess at the HP gains, I can only speak to the responsiveness of the car. For me it was not about how much HP I could pick up, it was about getting the ECU settings correct to match up with my mods.

Just thought I would share my e-tune experience.
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post #2 of 3 (permalink) Old 08-20-2015, 08:19 PM
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I found your post interesting.
My 2013 Touring A/T has much the same mods.
They are:
-Nismo S-Tune cat back
-Z1 HFC's
-Pop Charger
-Spacer
-Nismo cam set

I still have the original tuning print outs from a few years ago.
It is unfortunate that you did not do a full dyno tune.

You are correct,the hell with the numbers. Its how the car now drives.
Keep in mind that you can spend 1000's on bolt ons.You will never get
tire burning performance without FI.
Overall,myZ feels more reponsive. "Lighter" if you will.

Here are the numbers:

Baseline HP 241.79
Change HP 278.97

Baseline Torque 217.12
Change Torque 255.65

All tuning was done by Z1 Motorsports
In addition,my A/T was adjusted to give more mid-range power.
I have since installed a Transgo mod to my tranny.

I'm pretty happy with the results.
Hopefully these numbers will give you an idea of your results.
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post #3 of 3 (permalink) Old 08-20-2015, 09:09 PM Thread Starter
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Euroz,
Thanks for the feedback. The HP and TQ numbers your car is putting out is very impressive, I can only hope / guess to be close to what your showing. If I had to guess at the output I would put it around the 270 - 275 HP range at the wheels. I do plan to get my Z on a dyno at some point.
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