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02-23-2010, 04:48 PM | #1 |
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Dyno Tune: GST Motorsports L gets a low boost dyno tune for the 2010 season
Event: dyno pull
Location: GST Motorsports Hayward, CA Ambient Temp: 58F Elevation: Sea Level Weather: Rainy and miserable Tires: Hankook C91 275/35/18 Car: 1996 Impreza L Tuner: Mike Warfield Dyno Info: Mustang Peak HP at RPM: 563.6whp at 7500rpm no corrections Peak Torque at RPM: 425ftlbs at 6250rpm no corrections Baseline hp/tq for a stock on same dyno: 08 STI 220whp/234ftlbs Target Boost: 22.6psi Target AFR: 11.7 Fuel: E85 Engine/Power Modifications: HTA3586 .82A/R, GST Motorsports fully built motor Driveline Modifications: 08 STI transmission, ACT Clutch Suspension Modifications: Too many to list Other Modifications: Too Many to list This is our low boost/practice map we have spent the off season going through things to try and reduce lag and improve the transient response.
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02-23-2010, 05:35 PM | #2 |
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At what RPM are you hitting the target boost? It looks like it spools pretty quicky.
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02-23-2010, 05:57 PM | #3 |
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02-24-2010, 01:54 AM | #4 |
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Location: On the dyno at Yimi Sport
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Nice work Mike! That is excellent response for largish single scroll turbo. What did you change from the last time I saw you guys at Super Lap?
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02-24-2010, 10:11 AM | #5 |
Citizen Mick
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I would like to know what cams you are running? I love the very flat TQ curve, would you share a little more on your engine setup.
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02-24-2010, 11:45 AM | #6 | |
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Quote:
Cosworth intake manifold, reversed and adapted for DBC. Custom built flow matched equal length headers Removed a ton of parasitics from the timing belt system Mike |
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02-24-2010, 11:50 AM | #7 | |
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Quote:
Block: 81mm billet crank (Cobb Pro Series), Oliver lightweight rods (Long rod ratio), JE 9:1 compression pistons. Heads: Cosworth CNC ported heads with Cosworth +1mm valves and valvetrain, Cosworth cams (Standard off the shelf USDM specs) Mike |
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02-24-2010, 11:53 AM | #8 |
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^^ Nice. Any pix of the car/engine?
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02-24-2010, 12:36 PM | #9 |
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Looks very nice I like the way it just keeps pulling and makes exceptional power for 22 psi , e85 is the cats meow on these big setups.... Do you target 11.7 afr on your "kill mode" tune also? I noticed my engine makes the most power and stays the happiest at .80 lambda- aka 11.75 afr's...
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02-24-2010, 12:39 PM | #10 |
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02-24-2010, 12:41 PM | #11 | |
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Quote:
Mike |
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02-24-2010, 12:49 PM | #12 |
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That sounds right , I can target 12-12.5 for a little bit and it runs great but beat on the car for awhile and it will start to act up a bit , would imagine after 6 hard laps mine would act up alot lol.... Hats off to you guys I love the car, this is the yellow beast right? Any good car/engine bay pics?
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02-24-2010, 01:02 PM | #13 | |
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Quote:
I honestly suspect when Cosworth designed that piece they really put some work into it working with not only a decent sized turbo (makes sense not like you need a intake manifold upgrade for a TD04) and their cam/head package. Mike |
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02-24-2010, 01:14 PM | #14 |
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props on that tq.....300 tq at 3600-3800 rpm is pretty damn sweet when you have the topend too. Seems like a great all around setup.
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02-25-2010, 11:09 AM | #15 |
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man, what a graph...563 on that dyno is scarrry I bet
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02-25-2010, 12:02 PM | #16 |
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Long time no speak Carmi, how's things?
Yea it hauls pretty well, I was testing the old setup on New Years Day and got pulled over in the L out front of the shop. That would have been an interesting ticket for sure Mike |
02-25-2010, 12:54 PM | #17 |
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Wow nice work and the car looks great. Have you been able to get Gary used to the "flat-shift" on the Hydra yet?
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02-25-2010, 01:09 PM | #18 |
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BTW, you've made Cosworth's blog.
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02-25-2010, 01:28 PM | #19 |
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Hey Phil, thanks you should see the graph from the race tune I think Gary got pretty used to it when we had it enabled but we have been through so many changes since he last drove it it will be a learning experience all over again for him now.
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02-25-2010, 01:29 PM | #20 |
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02-25-2010, 01:38 PM | #21 | |
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Quote:
People seem happiest with these motors with stock rod length and a 79mm crank on the street (1.65), but options for ratios on reasonably priced street motors are pretty limited. Interesting to see that in a race motor, where there's probably a little more budget for using different ratios, you ended up right around the same ratio. You feel 7500 is a comfortable redline for that ratio? Do you ever push it out to 8k? Certainly still making power out there. Last edited by Concillian; 02-25-2010 at 01:50 PM. |
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02-25-2010, 02:04 PM | #22 | |
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Redline on the car is 8500rpm, HP starts to taper a little from 8100rpm this dyno was just me doing some tweaking prior to testing and is actually detuned at the boost level it's at from what we typically run with this boost level for practice during time attack events as our testing will see the car run a lot of laps during the day which we would not do during an event (typically no more than 3 hot laps at a time during a session as opposed to 15 minute stints in testing) Mike |
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02-25-2010, 02:22 PM | #23 |
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02-25-2010, 06:17 PM | #24 |
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02-25-2010, 06:22 PM | #25 |
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