So my car's FIRST DYNO DAY finally occurred today.
Huge Credit to: Eugene (My amazing tuner) + Adel (My amazing mechanic) for making this happen. I honestly don't know where I'd be without both of them in this journey!
The Good, the Bad, the Neutral Summary
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WHP:
442
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WTQ:
374
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P.S.I:
12.5
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RPM:
6200
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AFR on log:
12.2
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Corrected AFR:
8.5:1
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Supercharger Head Unit:
V-3 Ti Centrifugal Self Lubricating Head Unit
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Crank Pulley Diameter:
5.75, Stock Crank Pulley
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Pulley Setup:
3.0" Direct SC Pulley || 3.2" Jackshaft SC Pulley || 2.87 (9psi) Jackshaft Serpentine Pulley || Stock SC Idler Pulley ||
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Engine:
Stock Q50 Engine @ ~19k miles
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Transmission:
Stock 7AT from 2015 370z Base Model @ ~54k miles
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Injectors:
1050x ID
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Fuel Type:
E85, but more accurately, about E75 at the time
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Fuel System:
|| CJM S1-E || Zeitronix Ethanol Analyzer Kit || 525 Walbro ||
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Tuner:
Eugene @ ECUTEK
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Mechanic:
Adel (Only known person in CA who owns a G37 with Husam's GTR Twin Turbos)
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Location:
Concord, CA
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Dyno Machine Owned By:
The Racer's Line
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Temperature:
51 - 54 degrees Farenheit
Eugene limited the RPM's through the tune at 6200 because he found that the 1050x ID's on E85 (More accurately, about E75 content at the time) was maxing out well past 90% duty cycle if going past 6200 RPM's.
The car actually made 14 psi in the upper RPM's with the setup it currently has, but at the same time we ran into the issue of fuel running out in the upper RPM's so that's why what happened today and what the results is, is what it is, for safety reasons!
This is a problem, but a good problem for once! Just something I need to upgrade in the future if I want to have the car reach it's full potential with the last 1300 RPM's to play around with. The lower RPMs will stay the same regardless, so that's done and done!
Apparently the coupler on the supercharger headunit blew off during a pull so Adel had to come in and save the day to fix that issue, which he did.
We ended up using more time than planned for on the dyno machine only because of the mishap with the coupler and all that, but overall, I am extremely happy to have a working vehicle and to have a fairly fast vehicle for what it is at the moment, also knowing that it is way more capable and has more potential to be unlocked and played with if, and when, the injectors change from the current 1050x ID to 1300x ID.
I had a few options to work around the running out of fuel issue:
(1) Cap the rev limit through Eugene's tuning a tad above 6200 RPM and make the car as best as it can.
(2) Keep the 7500 RPM limit but take away timing, but actually this option is no good too because you can't lower timing if running out of fuel, as that won't help. The fuel needs to be at the right spots!
(3) Upgrade to better injectors and send it, but that is obviously not going to happen because of obvious reasons (on the clock for dyno time, don't have 1300 IDs on me or over there, and the install would take time as well, so this option was obviously not going to happen!
So I talked to a lot of respectable people and most said they would cap the rev limit and pretty much tune it to the best possible at that point, which is what we ended up doing and came up with these numbers!
Anyone have thoughts? comments? I think overall it went really well and just knowing that I have a vehicle with more potential is more than enough for me, haha.
For now, I will enjoy the car as is, take way better care of it once I get it back next week, and ... start being financially responsible once I get it back for the year of 2020!
So far, I think it's a great start for me for the year 2020 in terms of my vehicle, considering all the issues that it had in the last 2 years!
