GTech SS / RR Performance Data Accuracy - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

TmP · 05-28-2014, 09:48 AM

What up.

Went out and did a few base line pulls with my BRZ last night.
Right off the bat, I should say that I am probably running this thing in the worst conditions possible, as I am at 5200 ft and the ambient temp is around 95-105 F.
My oil temp is almost never below the magical 220 mark.

The settings I used were 3003 lbs, 21.52 sq.ft and 0.27 cw.
Drivetrain losses 15% (doesn't matter though, as I am looking at the uncorrected data.

Well, here's what I got.
92 and 102 whp. Got the 92 twice and the 102 once, when the car was still at about 195 F oil temp. So it would seem, that the car truly does pull timing quite a bit once above 220.

With all that said, what are you guys getting for power using the GTech?

Also did a few 1/4 mile passes and with horrible 60 ft times due to low grip on dusty MX roads the best I could muster (above 220 oil temp for all pulls) was 16.75 @ 87 mph.

Putting those numbers into a drag racing calculator brings me to 154 Hp crank.
Assuming that 10% power was lost due to hot oil, that would be 171 Hp crank.
Given the horrible air up here, that doesn't seem far off at all.

So seeing how most stock 200 Hp BRZs get 150 ish wheel hp on a dyno, that's a 25% loss, which is unheard of compared to all the domestic cars I'm used to, I guess the 102 are kind of reasonable for the conditions... maybe?

This is my first attempt of using a GTech and I bought it as a lap timer, but I would like to document the gains I get from the KW blower - hence the baseline runs

Roadcone · 05-29-2014, 02:22 PM

sounds like the D.A. was probably close to 10,000ft... yup.. its gonna be a turd.

TmP · 05-29-2014, 03:02 PM

Pretty much. lol

Akari · 05-29-2014, 04:28 PM

That all sounds about right to me.

I know going up Vail Pass in Colorado was quite painful with the drop in power plus not being able to rev it high due to my break in period. Elevation is killer!

TmP · 05-29-2014, 04:29 PM

I love the G-Tech. The RR function is killer and the main reason I got this thing, but like I said, it would be cool to document my mods using it to show power gains.
Will be interesting for sure, as the blower should still deliver decent numbers, even at altitude.

05-28-2014, 09:48 AM	#1
TmP Senior Member Join Date: Apr 2014 Drives: A bunch of 'em... Location: MX Posts: 270 Thanks: 13 Thanked 27 Times in 23 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	GTech SS / RR Performance Data Accuracy What up. Went out and did a few base line pulls with my BRZ last night. Right off the bat, I should say that I am probably running this thing in the worst conditions possible, as I am at 5200 ft and the ambient temp is around 95-105 F. My oil temp is almost never below the magical 220 mark. The settings I used were 3003 lbs, 21.52 sq.ft and 0.27 cw. Drivetrain losses 15% (doesn't matter though, as I am looking at the uncorrected data. Well, here's what I got. 92 and 102 whp. Got the 92 twice and the 102 once, when the car was still at about 195 F oil temp. So it would seem, that the car truly does pull timing quite a bit once above 220. With all that said, what are you guys getting for power using the GTech? Also did a few 1/4 mile passes and with horrible 60 ft times due to low grip on dusty MX roads the best I could muster (above 220 oil temp for all pulls) was 16.75 @ 87 mph. Putting those numbers into a drag racing calculator brings me to 154 Hp crank. Assuming that 10% power was lost due to hot oil, that would be 171 Hp crank. Given the horrible air up here, that doesn't seem far off at all. So seeing how most stock 200 Hp BRZs get 150 ish wheel hp on a dyno, that's a 25% loss, which is unheard of compared to all the domestic cars I'm used to, I guess the 102 are kind of reasonable for the conditions... maybe? This is my first attempt of using a GTech and I bought it as a lap timer, but I would like to document the gains I get from the KW blower - hence the baseline runs

05-29-2014, 02:22 PM	#2
Roadcone StreetKart Join Date: Jul 2013 Drives: 2014 Scion FR-S Monogram Location: Upstate, SC Posts: 477 Thanks: 43 Thanked 181 Times in 111 Posts Mentioned: 10 Post(s) Tagged: 1 Thread(s)	sounds like the D.A. was probably close to 10,000ft... yup.. its gonna be a turd. __________________ TRD\|Verus Engineering\|Titan7\|DEZOD Motorsports\|JDL Auto Design

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05-29-2014, 03:02 PM	#3
TmP Senior Member Join Date: Apr 2014 Drives: A bunch of 'em... Location: MX Posts: 270 Thanks: 13 Thanked 27 Times in 23 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	Pretty much. lol

05-29-2014, 04:28 PM	#4
Akari Senior Member Join Date: Oct 2013 Drives: 2013 DGM BRZ Location: Auburn, WA Posts: 417 Thanks: 181 Thanked 149 Times in 97 Posts Mentioned: 11 Post(s) Tagged: 0 Thread(s)	That all sounds about right to me. I know going up Vail Pass in Colorado was quite painful with the drop in power plus not being able to rev it high due to my break in period. Elevation is killer!

05-29-2014, 04:29 PM	#5
TmP Senior Member Join Date: Apr 2014 Drives: A bunch of 'em... Location: MX Posts: 270 Thanks: 13 Thanked 27 Times in 23 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	I love the G-Tech. The RR function is killer and the main reason I got this thing, but like I said, it would be cool to document my mods using it to show power gains. Will be interesting for sure, as the blower should still deliver decent numbers, even at altitude.

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