Dyno results : 2017 BRZ with bolt-ons & tune

[guybo]

Color me unsurprised. The only real differences between the pre-17 hardware and the new cars are the intake mani and the header. There are some tuning differences too and the end result is +5 HP and Tq.

Soooo, you replace the intake, put a new header on it and tune it and you've changed everything that is new about the new car and you made it into the old car, but tuned. Like every other old style tuned 86.

I would have been surprised if the new 86 tuned made more power than the average older style tuned 86.

[justinco]

I see what you are saying and it makes sense. The intake was not changed out though, except for the inlet tube.

Part of my test was to use as much of the same parts that I had on my FRS. My FRS made 10hp & 8tq peak over stock, with mostly the same mods. So the thought is that the BRZ might net similar peak gains.

But, as I noted in the video, the BRZ was already pretty good from the factory due to the upgrades you mentioned. So, the bolt-ons are not as beneficial on the new car, at least bolt-ons made for the previous years. Maybe vendors will release updated parts for the 2017+ cars.

[wparsons]

Originally Posted by justinco

Part of my test was to use as much of the same parts that I had on my FRS. My FRS made 10hp & 8tq peak over stock, with mostly the same mods. So the thought is that the BRZ might net similar peak gains.

When the engines are internally identical, and you've replaced the two stock things that are the biggest contributors (exhaust manifold and tune) to the higher output, your results aren't surprising at all

Originally Posted by justinco

But, as I noted in the video, the BRZ was already pretty good from the factory due to the upgrades you mentioned. So, the bolt-ons are not as beneficial on the new car, at least bolt-ons made for the previous years. Maybe vendors will release updated parts for the 2017+ cars.

There isn't some magical bullet to make even more power on the same engine, if there were it would've happened before 2017. All the factory did was make the stock parts closer to optimal. The tune is way more optimized than earlier years, which is one of the biggest sources of gains on earlier cars.

[D_Thissen]

@justinco just goes to show how poor the factory exhaust manifold and tune of the first gen 86's were. It would be interesting to see auto-x times between your old frs and new brz though.

[nikitopo]

The tune of the 2017 cars is more optimized, because they emphasized also on a better fuel consumption.

[nikitopo]

Originally Posted by D_Thissen

@justinco just goes to show how poor the factory exhaust manifold and tune of the first gen 86's were. It would be interesting to see auto-x times between your old frs and new brz though.

I will have to disagree on this. Please be aware that the newer changes didn't pass the emission tests in Europe and the manufacturer is selling now the revised models with the old engine (MT & AT). I would say that they felt some pressure to provide more power and tried their best even though they were aware that they'll cross the limits in certain regions.

[Ernest72]

So is a stock 2017 better than an earlier model with a stage 1 OTS tune?

[gtengr]

Originally Posted by nikitopo

I will have to disagree on this. Please be aware that the newer changes didn't pass the emission tests in Europe and the manufacturer is selling now the revised models with the old engine (MT & AT).

Source? The Subaru EU website shows the 13-16 body style.

[TofuJoe]

@justinco - who did the tune, and why 14 revisions? Someone who doesn't tune 86's often? Delicious completely nailed it on my tune with 3 revisions.

[D_Thissen]

Originally Posted by gtengr

Source? The Subaru EU website shows the 13-16 body style.

I didn't know that either but according to the brochure on toyota.nl, both auto and manual cars have 147kw (~200hp).
https://www.toyota.nl/brochures/gt86-brochure.json

[justinco]

Originally Posted by TofuJoe

@justinco - who did the tune, and why 14 revisions? Someone who doesn't tune 86's often? Delicious completely nailed it on my tune with 3 revisions.

HRI tuning, they do a lot of 86's. I think I was one of the first 2017's he did. We did a handful of tunes with the Grimmspeed intake, then switched it back to stock and did some more.

Being in mile high altitude also made it more time consuming I guess.

[justinco]

Originally Posted by Ernest72

So is a stock 2017 better than an earlier model with a stage 1 OTS tune?

Depends on what you mean by better. Stock for stock my 2017 BRZ felt quicker than my FRS. I attribute that to the gearing mostly.

A pre-2017 car with a base tune will likely have the torque dip smoothed out. So that might feel smoother with better power delivery. But that's just my thoughts on what I've driven.

[nikitopo]

Originally Posted by D_Thissen

I didn't know that either but according to the brochure on toyota.nl, both auto and manual cars have 147kw (~200hp).
https://www.toyota.nl/brochures/gt86-brochure.json

Correct. It is the same for the whole Europe.

[GrimmSpeed]

Should be a cool comparison once you get the GrimmSpeed intake back on. Back when we tested our prototypes against a silicone inlet+ K&N panel filter we saw a couple more ponies in the midrange, and a bit more torque. I really feel like the area that our intake makes power is going to compliment where the 2017 manual cars are making power. Should probably produce a little bit more power in those areas too, so we'll see!

Very few people look at directions anymore, but please make sure to do so with our intake. The most important point is if you put the filter onto the intake tube too far the tube will stick past the venturi on the filter, and give some weird airflow readings. During our dyno testing the difference between a filter that was on too far, and one that wasn't was substantial. I know you said your tuner saw some MAF scaling issues, so you'll want to be sure that you just do not put the filter on the end of the tube farther than 1in MAX. I usually do about .75in, and keeping the filter as straight on the tube will help some too. Should be a cool test!

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