BRZ STI NA with more power

[JDLM]

The coupe version of the WRX has been rumored since 2010

[nrclptcnsmniak]

I would be really glad if the BRZ STI came NA then I wouldnt beat myself up for not waiting. If the BRZ STI comes with 250 hp then it gives me hope for the FA engine and pumping out a few more ponies from a standard BRZ.

[[es vi: eks]]

Originally Posted by old greg

That is the normal Subaru formula, just not for an STI. What you want is a BRZ Spec C Type RA

Wouldnt it be a BRZ Spec C Type R?

I thought almost every coupe was a Type R and the 4 door verson was a Type RA.

[nrclptcnsmniak]

Originally Posted by tranzformer

How much more weight could they realistically knock off, 30-50kg?

this is what I was thinking. makes me wonder whats really in store for the STI version besides suspension.

I dont see why a brake upgrade would be necessary or wheels. Or anything that adds weight. Power sure but if they want to keep weight down perhaps theyll just do suspension or something similar to an exige in comparison to an elise. Aluminum control arms? Thicker sway bars? who knows

[switchlanez]

No turbo means lower price paying for things I'd end up doing anyway: lower suspension, basic power mods, aero parts, etc. Should cost less compared to adding OEM performance/visual mods to a base model in the end. And hopefully nicer tail lights tailored for widebody panels!

[nrclptcnsmniak]

Originally Posted by switchlanez

No turbo means lower price paying for things I'd end up doing anyway: lower suspension, basic power mods, aero parts, etc. Should cost less compared to adding OEM performance/visual mods to a base model in the end. And hopefully nicer tail lights tailored for widebody panels!

^agree

[fatoni]

Originally Posted by nrclptcnsmniak

this is what I was thinking. makes me wonder whats really in store for the STI version besides suspension.

I dont see why a brake upgrade would be necessary or wheels. Or anything that adds weight. Power sure but if they want to keep weight down perhaps theyll just do suspension or something similar to an exige in comparison to an elise. Aluminum control arms? Thicker sway bars? who knows

i dont think the exige has anything that an elise doesnt other than aero which may or may not be a good thing

[Levi]

CF roof FTW!

[EJ20]

Originally Posted by Snoopyalien24

Well, this is from a Subie tech from another forum, talking about the FB

For those who don't understand much about engines (like me lol) another member discussed a little more about what this meant

Maybe its too early to ask this, but did he tell if using fb25 sb and fa20 heads work or not??

I like the idea of having an FA25 with ~250hp time only will tell

[ZDan]

Originally Posted by tranzformer

The Porsche 911 GT3 RS 4.0 gets 85 lb-ft/liter but that relies on Porsche tech from the RSR. It is possible to get more than 75 but it costs $$$.

Originally Posted by Levi

LOL. The Ferrari 458 Italia makes 540 Nm @ 6.000 RPM from a 4,5l V8 that revs till 9.000 RPM. This is 120 Nm/l.

In the world most of us live in, 75 lb-ft/liter n/a is still about it.

Despite the existence of cars that claim 85 and 88 lb-ft/liter (458 Italia), a tune isn't going to take the FR-S from 150 lb-ft to 170-176 lb-ft, I can *promise* you this.

What you *can* expect is for similar n/a torque/hp gains per mod $$$ as an S2000. I.e., meaningful additional n/a gains are going to be relatively costly...

[old greg]

Originally Posted by [es vi: eks]

Wouldnt it be a BRZ Spec C Type R?

I thought almost every coupe was a Type R and the 4 door verson was a Type RA.

I guess, my Subaru knowledge doesn't go back that far.
But for me 'Type R' is just too strongly associated with Honda and ricers to ever be acceptable on a Subaru. In fact, if such a badge came from the factory on one of my cars, I'd pull it off just on principle.

[ZDan]

Originally Posted by Navi

No its not, factory tunes always calculate in fuel economy, durability and emissions.

Fuel economy is not taken into consideration for WOT operation. For some safety margin, the factory tune should be slightly richer than optimal. Power dropoff on the rich side of the curve is not very substantial, so leaning it out from factory to *optimal* still isn't going to buy you much for most cars like this.

They also compensate for bad quality fuel.

By pulling timing when knock is sensed. When knock isn't sensed, full timing. Probably a bit conservative, but in my experience there's usually a pretty broad range of ~4degrees where the engine will make the same power, so there's no cost to running advance at the lower end of that range. And below that, the dropoff with less advance is not precipitous.

There will be room for more performance, don't worry.

Some room, but not much.

I'd expect that with a low restriction intake and exhaust and custom tune, you might see +5% torque and +10% power, after spending $1000s. You will barely feel this (but you'll certainly HEAR it!)

[aesthetect]

^ maybe im misunderstanding you but tuning the car to slight rich from stoiciometric tends to produce more torque. slightly lean giving a bit better fuel economy. either way youre definitely right in the fact that theres not likely to be a lot of gain to be had by modding this factory FA 2.0 NA.

Originally Posted by Dave-ROR

Details on your source?

For what it's worth, staying NA is the only way I'd consider the STI version of the car. This car should not follow the normal subaru formula. Everyone wants a lighter and turbo STI which will never happen together. I want a NA, slight bump in power, big bump in suspension/handling and a nice chunk less weight.

couldnt agree more

[tranzformer]

Originally Posted by ZDan

In the world most of us live in, 75 lb-ft/liter n/a is still about it.

Despite the existence of cars that claim 85 and 88 lb-ft/liter (458 Italia), a tune isn't going to take the FR-S from 150 lb-ft to 170-176 lb-ft, I can *promise* you this.

What you *can* expect is for similar n/a torque/hp gains per mod $$$ as an S2000. I.e., meaningful additional n/a gains are going to be relatively costly...

I don't disagree with you. I was just stating that some street cars with NA engines have been able to gt more than 75 lb-ft/L. Not saying Subaru will do that but just that it was possible.