Spec Twin?

[blkwrxwag]

Originally Posted by DaWorstPlaya

Hopefully they allow a catted header and a Vishnu OFT, that might be enough for me to make the switch. The lack of umph is really starting to bug me. That way if there aren't any local competitors, locally I could go play in STX (and lose less horribly) until we get more folks.

To me, the only way you can do a tune, is using OFT as they are standard tunes for all years that are readable. Write your letters explaining why you are for that.

[M0nk3y]

I've expressed my hate in a header and tune for a Spec class, as you leave it open to vulnerability and removed the one thing you were trying to accomplish.

I've already written my letter against that.

[Shark_Bait88]

Yeah, I'm also in the anti-header/tune for spec camp.

I'm wary of the Stage 3 spec tune, but will reserve judgement until a determination is made and more details are released. I highly doubt it will be OFT, since they're not a TireRack supplier. My best guess is that they are talking/working with Cobb to see about developing a flash tune for the platform, since Cobb is both a well-known entity within the Subaru community and a supplier for TR.

If they can slightly reduce dip and, more importantly IMO, do something with the rev limiter/fuel cut, it might actually be pretty nice on an otherwise "stock" engine.

[blkwrxwag]

I can see it both ways... it's something I think would make the car more fun and is something I want to do, but it does make everything less spec and more expensive. I think it might not be good for year #1, but should be looked at for year #2.

[M0nk3y]

Going down the tuning path IMO is not the greatest of options. I've written it out pretty much my thoughts on tSB so I'll just copy and paste it over.

A 2013 tune vs a 2016 tune are completely different animals. Even a 2016 to a 2016 tune can be different in the parameters that are used due to how the ECU adapts to what's there.

My example, which is what I also sent to the SEB regarding my stance against headers and a tune.

Run 1 - was a baseline dyno WITH a canned tune that Moto-East has used regularly to send to his customers. If you were to order a tune from him and wanted it done remotely, this is what you'd get pretty much. Blue Line Run 1



As you can see, with WITH a tune, Headers, OP, Exhaust...the torque dip is still very much there. It took 8-9 runs later to end up at the final pull numbers as seen. For what it's worth, this particular dyno runs 5% short of other dynometers. As well, if you compare my tune to say a 2013, you'd see that the 2013s are able to pull harder up in the redline band and not have much of a drop-off at high RPM. I can fix this by running 100 octane when available, but still knock protection on a 2016 is much more intrusive than a 2013.

If you to take my tune, load it onto another car with exact same mods, you'd probably discover different results.

[blkwrxwag]

OFT has tunes for 2013-2016 based on ECU type. Are you saying that their tune will net better results on one year vs another?

I have an OFT Stage 1 map I run for street driving - it definitely helps with the torque dip. Not a lot, but enough to make it worthwhile. I'm not sure it would make much difference at autocross as I don't feel the dip there very often.

[M0nk3y]

Originally Posted by blkwrxwag

OFT has tunes for 2013-2016 based on ECU type. Are you saying that their tune will net better results on one year vs another?

I have an OFT Stage 1 map I run for street driving - it definitely helps with the torque dip. Not a lot, but enough to make it worthwhile. I'm not sure it would make much difference at autocross as I don't feel the dip there very often.

Not the tune per say, but more so the ECU with that associated car.

Pallotta and Simmons for example, they could run their car and never encounter engine knock on ECU side and they netted some serious gains up top.

My car has a lot more inherit knock encoded within the ECU which needs to be corrected w/protection. Talking with Moto-East, along with my own research, as the years for the FRS/BRZ go from 13-16, the ECUs have changed and such that more protection is coded within.

So, the amount of actual knock hasn't really ever changed between a 2013 and 2016. But the ECU has become more precautionary with sensing knock and correcting it. So, yes I could probably turn off knock protection and be gain a couple horsepower...but I'm doing so now at the risk of my engine.

If a spec tune came out with obvious knock protection, a 2013/14 would benefit more so over a 15/16.

Make sense?

[blkwrxwag]

Understood - thanks for the explanation.

[M0nk3y]

Originally Posted by blkwrxwag

Understood - thanks for the explanation.

Is half of me making sure SSC doesn't get too close to STX in terms of rules? Yea probably.

But IMO, just from the side of competition aspect - Stock Tune is about the closest you can get for driver against driver.

[blkwrxwag]

But I want the sound of a UEL header, dammit!!

[M0nk3y]

Originally Posted by blkwrxwag

But I want the sound of a UEL header, dammit!!

Funny, they make a class like that...

Just buy your car back already

[chucky12012]

I like the idea of running header and tune in the class from a benefit to the car, but I think for health of the class and keeping it in a nice healthy place further from STX, I prefer they steer clear of it.

[blkwrxwag]

I made an offer. They laughed.

[imnotsureaboutbrz]

I'm also doubtful of the header and tune combo. If you are gonna buy a header mind as well go STX.