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Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain. |
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06-10-2022, 12:25 PM | #15 | |
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Maybe chalk it up as my costs to the greater cause lol. |
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The Following User Says Thank You to SpeBud07 For This Useful Post: | Tatsu333 (06-10-2022) |
06-10-2022, 12:36 PM | #16 | |
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They are the only ones that do this type of work that I'm aware of. If others are interested, I can ask them about a group buy. |
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06-10-2022, 02:11 PM | #17 | |
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Yes, though once you start stacking other mods the effect seems to be less noticable.
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You have to remember there are a lot of people that tout the difference they feel running lightweight pulleys, flywheels, driveshafts, and Pilot Sport 5's so we get a little jaded when someone says I did "X" and notice this difference but have not other information to provide other than what they feel.
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06-10-2022, 03:30 PM | #18 | |
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I agree with you on that. I'm almost 50 and built a lot cars over the years, and I've always wanted to try extrude honing. Money is much less of an issue for me than it used to be building cars in my 20s and 30s, so it's worth a try. I'm 100% certain there's value in doing it, but the question is how much value. If nothing else, we'll have a nice cool red manifold that I can say made this tin can 992 Turbo S fast. |
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06-10-2022, 08:36 PM | #19 |
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Basically, yes, which then puts the power in a more usable RPM band. As I said, I will get my car back on the dyno later this summer to verify the difference both with the stock tune and my self-tune on ECUTEK with the power blocks, so we'll have another real data point for them on an otherwise-stock motor.
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06-10-2022, 09:20 PM | #20 | |
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Note: I ran E85 and a 2mm overbore OEM TB while NA using this IM and adjusted the cam angles for optimization later on. Best representation: Red-MY13 IM, Blue-MY17 ExHn. I data logged on the same road and conditions several times. The logs indicate more MAF usage (g/s, Vs) as well as running a bit leaner. The pulls also took less time. I don't imagine you can feel any gain under 5hp. From the research I did on the subject before initiating the project 3-5%hp increase was common on NA motors. No data on FI. Ford used the process on the SVT 2.5 Contour SVT back in the day and it was good for 5-10hp. 2013 IM vs MY17 extrude honed. I never bother bolting the MY17 up before the processing. Last edited by PulsarBeeerz; 06-10-2022 at 09:57 PM. |
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06-10-2022, 09:31 PM | #21 | |
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Oh yeah, I ran the BPBs before with a tune calibrated for them as well. OFT offered it years ago. The more bolts on you add the less they made a difference. I ended up removing them to run E85 which was the best bang for the buck NA. |
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06-12-2022, 03:57 AM | #22 | |||
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The casting on the stock 2017+ manifold looks pretty clean already, so I'd be surprised if Extrude Honing improved flow that much. I absolutely could be wrong though. Quote:
People seemed to talk all kinds of crap about the manifold just "being pretty" and not doing anything because the dyno only showed a 1-2 hp peak gain, and conveniently ignored the HUGE difference in the post-HP-peak RPM range. It's kind of like the argument some people have about the BPB's being a waste of money because they don't add a bunch of peak HP (which they don't), but there are substantial gains in "non-peak" areas that make them worthwhile for me because I don't particularly care about the peak numbers, and more about fattening the middle of the curve. Quote:
Only other engine mods I'm likely to make will be the ACE A350 headers I have sitting in my attic, a Fluidampr to smooth things out a bit, and *maybe* a Grimmspeed intake. Any further money will be spent either on dialing in the suspension a bit more, or on track time to improve the nut behind the wheel...LOL. Unfortunately, E85 isn't an option where I live, so I'm stuck with optimizing for Shell 93 octane.
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Last edited by Tatsu333; 06-12-2022 at 08:37 AM. |
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