BRZ ST(X) Build

[makofoto]

We had something like a total of 8 BRZ/FR-S's over our weekend of AX'ing at CA Speedway! Max was way fast with his BRZ on old 245 RS-3's and lowering springs. Some snaps and videos to follow

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[ABQautoxer]

Any with your super slick higher FPS camera?

[BlkWRXWag]

It certainly was impressive for just Eibach Pros and crash bolts. The car felt slow and soft compared to my normal race cars, but I don't do stock!

The balance, however, was super. I could control the car with the throttle and it was neither pushy, nor loose so I could drive very aggressively.

The best stock car I have ever driven was an MSR MX5... not sure it's in that league, so I think it may struggle in CS at the highest levels. STX - well, if I had the money, I would build it just to find out.

I still don't think it would hang in STR unless they really manage to unleash a lot more power.

[04trailsti]

A lot of feed back has said that the BRZ is much more pushier than the FRS. Have y'all experienced any bad understeering.

[ABQautoxer]

Originally Posted by BlkWRXWag

The best stock car I have ever driven was an MSR MX5... not sure it's in that league, so I think it may struggle in CS at the highest levels. STX - well, if I had the money, I would build it just to find out.

I agree. I've driven a stock MSR on Kumho XS and my BRZ stock (with crash bolts) on Star Specs and I believe I'm measurably faster in the MSR and it feels better balanced. The problem I have in my BRZ is I get some oversteer in transitions fairly easily which I think is primarily is from engaging the rear bumpstops harshly. It can be driven around and I now will try to work on it with setup but so far I feel like the BRZ will be a bit behind the Z0K/MSR.

Mine certainly does not have understeer. Its really good on throttle and steady state. Turn-in is extraordinarily good.

[makofoto]

Max's Eibach lowered BRZ VIDEO: http://public.fotki.com/makofoto/201...rz-sat-60.html

[BlkWRXWag]

Holy crap - awesome!

[makofoto]

loose white FR-S ... not getting it to save at 60 FPS?

http://public.fotki.com/makofoto/201...s-desktop.html

[04trailsti]

Cool videos man!

[BlkWRXWag]

[ABQautoxer]

I love how Max is trying to sell BRZs while on the mic in the FRS video. Very cool vids Mako.

[BlkWRXWag]

Unfortunately, Mako missed my "You can tell it's an FRS because the driver has a flat-billed helmet" comment.

[Scooby South]

^^^^ Hahahaha

[makofoto]

[dwx]

I was able to drive a car with a 93 octane Ecutek tune last night. It was an off the shelf one. The pull through the torque dip was definitely better and the power up top was noticeable as well. Not mind blowing though, I think getting a custom tune and using E85 is going to get the most out of the car. They are fairly close to adding map switching to make switching between maps easier and there was some rumbling of adding a flex fuel sensor so you wouldn't even have to run a different map specific to E85.

One interesting datapoint is John (Visconti) so far has been unable to get more power out of the car with a tune and full exhaust, once tuned the car makes the same power with an exhaust as it does without.

[Scooby South]

car indexed 15th yesterday out of 151. For reference, C-Stock National Champion Chris Fenter indexed 3rd ... Car was down to him by 2.6 secs Raw..

[Subiemax]

Originally Posted by dwx

I was able to drive a car with a 93 octane Ecutek tune last night. It was an off the shelf one. The pull through the torque dip was definitely better and the power up top was noticeable as well. Not mind blowing though, I think getting a custom tune and using E85 is going to get the most out of the car. They are fairly close to adding map switching to make switching between maps easier and there was some rumbling of adding a flex fuel sensor so you wouldn't even have to run a different map specific to E85.

One interesting datapoint is John (Visconti) so far has been unable to get more power out of the car with a tune and full exhaust, once tuned the car makes the same power with an exhaust as it does without.

So, save your money and do without exhaust?

[bdi]

Does full exhaust = headers and high-flow cat?

[MNbiker]

Originally Posted by dwx

... and there was some rumbling of adding a flex fuel sensor so you wouldn't even have to run a different map specific to E85...

And you're using what allowance in STX to legally add a sensor?

[dwx]

Weight savings and sound would be the two reasons I can think of to replace the exhaust.

I don't think he has tuned a car with a full exhaust and header with a high flow cat. When he tuned a car with an Agency Power catless header and stock exhaust it was the same story, the car didn't make any more power with the header than it did with just tuning.

That's just one tuner though. TheShop was able to see gains from adding parts and tuning afterwards...

Run 2(Red) - Stock
Run 12(Blue) - Tune Only (ECUTek)
Run 19(Green) - Tune w/ Catback Exhaust (Perrin)
Run 27(Purple) - Tune w/ Catback Exhaust & Intake (Perrin/Injen)

[dwx]

Originally Posted by MNbiker

And you're using what allowance in STX to legally add a sensor?

I'm not driving in STX Steve, I stopped keeping track of those rules like 8 years ago. It would be nice if you could add a flex fuel sensor...

[Scooby South]

Originally Posted by bdi

Does full exhaust = headers and high-flow cat?

yes, but the rules are specific now on what type of cat you can run it has to so many Cells per inch...I sent that section of the rules to Jason at Nameless...and he indicated theirs fits the bill which is excellent news. So I am wondering exactly how much weight the car can lose and still make power with their exhaust.


Bill

[bdi]

Originally Posted by Scooby South

yes, but the rules are specific now on what type of cat you can run it has to so many Cells per inch...I sent that section of the rules to Jason at Nameless...and he indicated theirs fits the bill which is excellent news. So I am wondering exactly how much weight the car can lose and still make power with their exhaust.


Bill

Hrm, didnt know the rules changed. If the Milspec ones fits the bill, I recommend that one.

http://www.mil-spec.org/Universal/

They make a 100 and 200 cell. The 200 cell has been making good power on Josh and I's STU STi's problem free.

[Scooby South]

For my own reference...

Replacement converters must have a minimum catalyst density of 100 cells per inch and minimum substrate length of 3 inches. (Ref... OCT 2012 Fastrack)

[dwx]

http://i190.photobucket.com/albums/z...asvse85104.jpg

Those are the latest results for an E85 tune basically no more torque dip. And also at least with the E85 tune changing the exhaust or intake had no real effect on anything over a stock car.