JohnInNH updates/observations - Infiniti Q50 Forum
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post #1 of 39 (permalink) Old 06-12-2019, 11:25 PM Thread Starter
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Exclamation JohnInNH updates/observations

As most of you know I went to Level 10 b4 going to the DE course at Palmer Motorsports park last weekend.
A few things post track.

1) got a second tune from Seb at Specialty Z. I did get a new "torque" tune after Pat from Level 10 called Seb. He sent a new base tune to go with the new torque converter and other goodies. But the tune felt flat after 110 MPH

I did a data log on the way to the track in hopes a new tweaked tune would be available b4 my second day. I got the revised tune Monday from Seb, so missed out having it for the track day 2.

2) Received my QuickJack lift from Home Depot and assembled it this afternoon. Rotated X, front to opposite rear, as the track ate up a good bit of my front brand new Pilot Sport 4S's.

I also blew out a ton of brake dust and then went to the car wash to hose off my wheels. I could not believe how many chunks of melted rubber were stuck inside my rims!

3) Uploaded the tweaked map from Seb & reset my air pressure. After inspecting the tires I realize 2 extra PSI in the front is to much. Cold i adjusted to 35 rear and 36 front. (I was running 34 rear and 36.65 front)

4) Took a test ride on my favorite big sweeper road with the rotated tires, new air pressure, and tweaked tune.

Wow what a difference!! I wish I had had that tune at the track. Big difference. Two more log files will finish dialing it in. But I am very happy as is.

This tune maximizes the mods Level 10 made, and gave me room to use 94-95 octane. Once dialed in I'll dyno it.

Observations: my car pulls very hard with a real surge of power at 3K it realky comes on strong beginning at 3K and continues on up till it starts to fall off at 5500.

I quickly hit 100+, and any stab of throttle at, or above 3K, is a reak kick in the butt.

Tires are smooth, quiet, and far out corner my AS 3+'s.

The transmission is a whole different animal. Paddle shifting is a blast with real solid shifts and is faster (under load), but similar to OEM off load, but still a little different.

Also, the ECU relearning from the track time helped a LOT.

What I learned: I was running to much pressure in the front as the center rib was a bit low.

Rotating tires after the track is a must do.

The lift is not light and you really need to place the rubber blocks exactly, so you have to lay on your back. ALSO for our cars you need to order the $88 "Pinch-weld Blocks." The lift comes with 2 sets, std, and tall. No clue why the "Pinch-weld Blocks" are not standard as they are backward compatible.

Also, after driving hard you should re-torque your lug nuts. 4 nuts needed about a 1/4 turn to "click" my torque wrench. Now I understand why at the track they re-torque all your lug nuts b4 they let you out on the track.
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Last edited by JohnInNH; 06-13-2019 at 01:35 AM.
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post #2 of 39 (permalink) Old 06-13-2019, 12:42 AM
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The lift is not light and you really need to place the rubber blocks exactly, so you have to lay on your back. ALSO for our cars you need to order the $88 "Pinch-weld Blocks." The lift comes with 2 sets, std, and tall. No clue why the "Pinch-weld Blocks" are not standard as they are backward compatible.
Yes, not having pinch-weld blocks as standard is the only let-down on this lift purchase. I make use of rollers and the hooks to line up the lifts from inside-out. Incidentally, nowhere in the setup manual do they mention the hooks to be used for positioning the lift platforms. Whoops...

As for the pinch-weld blocks, I pre-planned and ordered them on May 25th, only to find out they were on back-order until June 10th. I got notification today they have been shipped, and I should receive them on Monday, June 17th.

I'm also going to order the fancy-smancy storage hooks for my QuickJack. They are due to be released at the end of June.

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post #3 of 39 (permalink) Old 06-13-2019, 12:56 AM
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I also blew out a ton of brake dust and then went to the car wash to hose off my wheels. I could not believe how many chunks of melted rubber were stuck inside my rims!
Yup, this validates why I bought the used Stoptech BBK a couple of months back, since I plan to run my Q60 at HPDEs at Pacific Raceway, etc. Going to get some race pads and drop them in - the Stoptech ST-60 & ST-40 Calipers require only removing four (4) and two (2) Allen-head through bolts, respectively, and the pads slide-out. AP Racing BBKs with Radi Cal (I & IIs) calipers have a similar arrangement.

I'm glad to see Seb coming through for you on supporting the Level 10 upgrade. My next upgrade that will require an updated tune from Seb is when I'll install the AMS LPFP (purchased) and AMS HPFP (soon) at the end of the summer. I'm hoping for a little more top-end power with the fuel flow upgrade and tune.
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post #4 of 39 (permalink) Old 06-13-2019, 01:38 AM
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What blend of ethanol are you planning to run?

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post #5 of 39 (permalink) Old 06-13-2019, 01:41 AM Thread Starter
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What pads are you going to use in your Stoptech calipers?

Oh, there was a Porsche at Palmer with the 410mm carbon ceramic upgraded brakes. A measly $12k EXTRA.
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post #6 of 39 (permalink) Old 06-13-2019, 03:08 AM
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What pads are you going to use in your Stoptech calipers?
Still making up my mind:

For the STR-60 Caliper:

https://www.zeckhausen.com/catalog/i...th=24_7425_412

For the STR-41 Caliper:

https://www.zeckhausen.com/catalog/i...h=24_7425_2026

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post #7 of 39 (permalink) Old 06-13-2019, 10:03 AM Thread Starter
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Reason I ask is because my Carbotech XP12/XP10 pads are squealing like crazy now. I may sand the pads with 1000 grit wet/dry and the rotors too. Then rebed them.

A guy at the track said he ran Frodo's because the Carbotech were so noisy. He agreed the XP12 & XP10 were excellent on the track but he could not stand the noise.

They weren't bad before I tracked it. 🤔
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post #8 of 39 (permalink) Old 06-13-2019, 10:25 AM
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A guy at the track said he ran Frodo's because the Carbotech were so noisy. He agreed the XP12 & XP10 were excellent on the track but he could not stand the noise.
Track pads are [almost] always noisy; I find it helps if you bed the brakes properly before usage, but compared to road pads, anything track-focused will squeal like crazy, constantly.


By the way, thank you very much for the updates! It is great to get the feedback on the transmission upgrade journey and results. (Next up for me is LSD then the transmission upgrades.)

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post #9 of 39 (permalink) Old 06-13-2019, 10:45 AM
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Good feedback John! I see a QuickJack in my future.

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post #10 of 39 (permalink) Old 06-13-2019, 11:00 AM Thread Starter
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I think posting our experience is helpful to others. By making informed decisions and developing an upgrade "Plan/Path" can save both $ and heart ache.

Nothing more frustrating than realizing your saving some $ upfront by getting less expensive/inferior parts, or parts you have to replace later on, because you should have done it differently to reach your goal hurts. This just costs a LOT more in the long run.

Hopefully my posting this information helps others. I'm no Avedis53 who is one of the most valuable members of this forum. I can't even count the ways he has helped me and many other forum members here.

It is sad that many of us understand more about our cars than the dealership, parts department, and the Infiniti maintance technicians do.

Bottom line it's up to US to help eachother out.
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