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Old 09-26-2012, 01:38 PM   #926
Subiemax
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Quote:
Originally Posted by dwx View Post
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.
If I could get that DD I think it would be worth it. Of course, I dont know of any E85 in our area. Might have to start growing corn.....
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Old 09-26-2012, 11:10 PM   #927
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How are the brakes on these things for serious AX? The front is a 08+ WRX pad so readily available - the rears are a 2010+ LGT pad - so HP+ are just being made.

We've sold a few sets of race pads but that's a whole nother thing.

-Ken
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Old 09-26-2012, 11:11 PM   #928
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I didnt like the stock pads personally so I put on some Stoptech Street Performance pads and I'm completely happy as it didn't add too much bite but did reduce pedal effort.
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Old 09-26-2012, 11:16 PM   #929
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I thought the stock brakes were fine. I never even thought about them, so that means they didn't do anything weird.
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Old 09-26-2012, 11:22 PM   #930
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It will probably take a tire in the sub 150 treadwear range or a long or especially high speed course to show any deficiency.
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Old 09-26-2012, 11:23 PM   #931
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I was on a 140 tire on a very fast course doing near back to back runs (10 minute breaks) in 103 degree heat - no problems.
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Old 09-26-2012, 11:25 PM   #932
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Yeah I didn't have fade problems, my complaint was the high pedal effort. I think its just relative, the last several cars I had were equipped with bigger than normal brakes and required little effort.
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Old 09-26-2012, 11:26 PM   #933
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*****!

Edit: dammit, I can't say *****!
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Old 09-26-2012, 11:26 PM   #934
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Meow!

(yes I speak Maxanese)
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Old 09-26-2012, 11:35 PM   #935
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Quote:
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Yeah I didn't have fade problems, my complaint was the high pedal effort. I think its just relative, the last several cars I had were equipped with bigger than normal brakes and required little effort.
The car does not require more heat mass in the brakes - at least not for autoX - it has 08+ WRX front and 2010+ LGT rear brakes. Not beefy on a 3xxx pound WRX- quite beefy on a 2xxx BRZ.

But pads w/ increased bite, better feel and modulation ability as well as more consistent performance over a given temp range can certainly decrease lap times.
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Old 09-26-2012, 11:37 PM   #936
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Quote:
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I was on a 140 tire on a very fast course doing near back to back runs (10 minute breaks) in 103 degree heat - no problems.
Wasn't suggesting problems.

Looking for areas to improve - just like everything else listed in here.
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Old 09-27-2012, 09:37 PM   #937
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for me the Brakes are fine...but I have upgraded lines and fluid...the pads bite for my style of driving... for now... maybe in the future find something to reduce the unsprung weight... the AP racing or Wilwood kit is looking inviting..but saving money for now for my tune..

Bill
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Old 09-28-2012, 09:29 PM   #938
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this is about what I can expect for a E85 tune, header, pully and an intake...not sure what else I can do.. about what I expected really, the tune is ECUTEK with the Redline raised to 8000 rpm.. shows 62.3 mph in 2nd.. which is about perfect.. not convinced this is the way I want to go... just looking at options right now..

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Old 09-28-2012, 10:13 PM   #939
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A muffler delete and E85 tune looks good for those on a budget and around e85. I'm on a budget, but no e85 close to me.
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Old 09-29-2012, 11:10 AM   #940
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Quote:
Originally Posted by dwx View Post
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)
I would assume there are tuning revisions between Run 12, 19, and 27? The BRZ I saw on the dyno didn't make any power from exhaust changes alone. Really exciting to see the cars get built.
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Old 09-29-2012, 03:07 PM   #941
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I would assume there are tuning revisions between Run 12, 19, and 27? The BRZ I saw on the dyno didn't make any power from exhaust changes alone. Really exciting to see the cars get built.
Yes, they retuned in between each run shown. I specifically asked if they changed tuning strategies in between 19 and 27 because of the "drastic" change in the torque dip. They only changed the intake between those runs...
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Old 09-29-2012, 04:03 PM   #942
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I would assume there are tuning revisions between Run 12, 19, and 27? The BRZ I saw on the dyno didn't make any power from exhaust changes alone. Really exciting to see the cars get built.
Yeah that car was being tuned as things were being changed, but I don't have any more information than what was in that thread. I'm holding out for some more tuners like Perrin before declaring adding parts makes absolutely no difference.

Here is a new plot from someone with an intake (aFE) and a header-back 2.5" exhaust (Swift Racing). The header back eliminates the second cat, which would still be STX legal I believe. The first plot is on 93 octane. The car makes some good mid-range torque gains with just the tune even on 93. On E85 the car is a whole different animal, and as much as people may not like it, to be competitive in STX in this car it's going to be a requirement imho. It's makes me want to go from CS to STX since I have an E85 station nearby and it would be a lot of fun on the street, but who knows how healthy this is for the car.

On paper (the best kind of racing), I also don't see how other cars in STX compete against the car making 200whp/160ft-lbs, especially 150+ ft-lbs from 4200RPM up.



Last edited by dwx; 09-29-2012 at 05:14 PM.
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Old 10-01-2012, 12:06 AM   #943
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from todays event... 4th on INDEX out of 140, 7th Raw time and 1st in class

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Old 10-01-2012, 10:23 AM   #944
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Bill, thanks for sharing but we seriously gotta get you a new camera and mount.

http://reviews.cnet.com/digital-camc...-35426715.html
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Old 10-01-2012, 11:54 AM   #945
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Great reading & well-done on the car, Bill--these BRZs have my interest...

How much, all in, for a Nationally competitive STX BRZ in mod costs? I'm trying to simplify my life going to a street-tire, lightly-modded class (Read: NOT Street Mod )

Thx
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Old 10-01-2012, 12:02 PM   #946
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I did the math recently and a moderate build was ~$6k + cost of car. Coilovers, tune, full exhaust, intake, battery, wheels, tires. This did not include changing the seats in costs.
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Old 10-01-2012, 12:09 PM   #947
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Quote:
Originally Posted by ABQautoxer View Post
I did the math recently and a moderate build was ~$6k + cost of car. Coilovers, tune, full exhaust, intake, battery, wheels, tires. This did not include changing the seats in costs.
That's awesome... I have almost that much in just my (used) JRZ Triples for the GT-R!

BTW, I have a Lithium Pros L680 battery--wondering if that would work on the BRZ.

How much are the stock seat assemblies? I have Tillett CF seats in the GT-R & they weigh 27lbs w/ all mounting assembly.

Thx,

George B.
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Old 10-01-2012, 12:15 PM   #948
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Quote:
Originally Posted by ABQautoxer View Post
Bill, thanks for sharing but we seriously gotta get you a new camera and mount.

http://reviews.cnet.com/digital-camc...-35426715.html
LOL... OK.. GoPro vids will be up a bit later.. Its my point and shoot Nikon on Video mode..
After Tune ...next will be Data Acquisition/analyzer...to study, study study..

As far as costs... I budgeted about 10k...after talking with some High level STR folks.... I am about 5.5 k into right now..some more stuff that I need..(Seats, Rain set of Wheels/tires, Tune, Header/cat, LW midpipe, and maybe putting on 4pots with aluminum Hats, more suspension Stuff, Bushings. and yes...more camera's).....I am taking my time with the rest of this to ensure I get the best possible options...this thing is STILL WAY early in its infancy..I am sure SEMA will prove its worth in BRZ/FRS items..

Bill
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Old 10-01-2012, 12:22 PM   #949
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Ah, yes I didn't have the brakes in that budget because they didnt quite exist yet. So probably $8k or so. I don't think I would have an extra set of rains since full tread tires seem so fast on the current options.
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Old 10-01-2012, 12:22 PM   #950
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Hey George... Long time...no more EVO???

the Stock size battery is a grp 35... I am using a DEKA..soo your Lithium Pros L680 battery should be fine...You might have to make a custom mount for it..
The BRZ is proving that It belongs.... it is very Nimble...not alot of power...Finesse' and Momentum make this a Drivers Car..Its point and shoot with lovely handling qualities... it turns when you ask it too and goes where its directed..

Hope that helps.. good to see ya man..

Bill
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