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Old 12-23-2019, 09:26 AM #31
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I am surprised to read that you only received a 1hp increase with the addition of the URD MAF Calibrator. @Gadget should the gains come right after install, or does it take the ECU some time to adjust? Any tips for us? I was really hoping for a 10 to 15 hp increase from this mod.
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Old 12-31-2019, 04:14 PM #32
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Quote:
Originally Posted by cloudrunner View Post
I am surprised to read that you only received a 1hp increase with the addition of the URD MAF Calibrator. @Gadget should the gains come right after install, or does it take the ECU some time to adjust? Any tips for us? I was really hoping for a 10 to 15 hp increase from this mod.
With a catback and CAI this guy got 8hp with the V8. Not quite apples to apples with this thread but close. And keep in mind these are only peak numbers. Numbers below the peak could see larger gains than that.

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Old 01-16-2020, 04:16 PM #33
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Quote:
Originally Posted by Gecko View Post
So here is the final chart of all three runs combined:



Yellow = stock
Green = TRD Intake + Borla Touring Exhaust
Blue = TRD Intake + Borla Touring Exhaust + URD MAF Calibrator

If you were to adjust the numbers from the second two runs for temperature based on a +35% boost due to temps, you'd have roughly:

Stock: 191.3 hp and 217.9 lb-ft of torque
TRD Intake + Borla Touring Exhaust: 203.2hp and 230.6 lb-ft of torque (+11.9 hp, +12.7 lb-ft of torque)
TRD Intake + Borla Touring Exhaust + URD MAF Calibrator: 204 hp and 231 lb-ft of torque (+12.7 hp, +13.1 lb-ft of torque)

The piping on the Borla is the same as stock, so I do not assume the exhaust made any impact on the runs and credit the TRD intake.

Some here have said that they feel a big difference with the URD MAF Calibrator. I did not, and am not surprised to see such negligible gains with its use. For what it costs, I do not recommend this mod.
This was outsanding information been wondering if anyone had gone this extent to determine results glad I found your post here
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Old 09-11-2020, 10:21 AM #34
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Quote:
Originally Posted by cloudrunner View Post
I am surprised to read that you only received a 1hp increase with the addition of the URD MAF Calibrator. @Gadget should the gains come right after install, or does it take the ECU some time to adjust? Any tips for us? I was really hoping for a 10 to 15 hp increase from this mod.
Sorry I'm seeing this late.

We did a few runs, and disconnected the negative terminal on the battery to reset everything after the run with the CAI alone. The results were all the same.

My .02 is that the MAF calibrator does not do much and I probably would not spend $300 on it if done over again. On the highway or at higher speeds when flooring it, I feel like there's a little more juice at the very upper end of the powerband with the MAF calibrator, but that's about it.
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Old 09-11-2020, 12:24 PM #35
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Quote:
Originally Posted by Gecko View Post
Sorry I'm seeing this late.



We did a few runs, and disconnected the negative terminal on the battery to reset everything after the run with the CAI alone. The results were all the same.



My .02 is that the MAF calibrator does not do much and I probably would not spend $300 on it if done over again. On the highway or at higher speeds when flooring it, I feel like there's a little more juice at the very upper end of the powerband with the MAF calibrator, but that's about it.
Thank you for your post. I was debating this mod also but if a dyno doesn't claim anything then I'm not spending the money on it .

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Old 10-13-2020, 06:12 AM #36
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Quote:
Originally Posted by Gecko View Post
Next update:

Out of curiosity, right before I got my baseline dyno, I started running premium gas. Of course, it takes 4-5 tanks before you'll see any difference - if there is one - but I've been on two road trips this month and am 15+ tanks of premium (91) into my experiment at this point. So...

My commute is 90% city, and I drive fairly aggressively.

Stock (combined) with BFG KO2s on 87 octane : 14.5 MPG
Stock (combined) with Yoko Geolandar G015 A/Ts on 87 octane: 15.5 MPG
Stock (combined) with Yoko Geolandar on 91 octane: 16.8 MPG

Stock highway with Yoko Geolandar G015 A/TS on 87 octane: 18.6 MPG
Stock highway with Yoko Geolandar G015 on 91 octane: 19.4 MPG

So, there is some real, measured improvement to MPG when you run premium. I've been keeping notes over the last 4 weeks, and the results above are represented to the best of my ability.

The butt-o-meter says there is a little extra oomph at the top end on premium, most notably for passing power.
Kudos to you for taking the time to log this data and share it with us.

I'd be curious to see this run again as I feel like this might be counter-intuitive.



Premise: the engine is tuned for 87-octane
Octane rating is directly related to its ability to resist detonation (pre-ignition or pinging).

So, unless the engine management system is intricate enough to advance timing to compensate for higher octane, I'd like to see the test ran again.
During your driving sessions, did you take note of the climate and elevation changes or were your routes more or less the same?

Based on your results, it would imply that running fuel with an even higher octane rating would produce more power. In normal boosted applications, this is ONLY true when coupled with increasing PSI because the fuel can now sustain increased pressures. However, simply running race gas without any other changes to compensate for the fuel would have non-beneficial results.




BTW - I'm merely striking up a conversation to get some heads thinking.
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Old 12-14-2020, 01:07 PM #37
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I received a bunch of PMs that the image links in this thread were broken - I apologize. Did not realize that Facebook randomly kills image links, so I had to create a new photo hosting account and fix it.
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Last edited by Gecko; 12-29-2020 at 01:27 PM.
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