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10-19-2013, 02:09 AM | #1 |
Former Vendor
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Dyno&Timeslips - VF48/Any north american Subaru stock turbo record, first in the 10s!
Event: 1/4 Mile Drag Racing (test and tune)
Location: Toronto Motorsports Park, Cayuga, Ontario (NHRA) Ambient Temp: 61F Elevation: 630 Weather: Cloudy, cool Track and Conditions: zero track prep after rain (street wars / street tire night) Tires: Hoosier DOT legal Car: 1995 Subaru Impreza Tuner: Mike @ Innovative Tuning Builder: Innovative Tuning Dyno Info: Mustang Dyno Transmission: Stock 6 Speed Gear: 4th Peak HP: 403 whp Peak Torque: 570 wtq Baseline hp/tq for a stock 08+ STI on same dyno: 240whp Target Boost: 28 tapering to 15 Target AFR: varies with boost Fuel: pump E85 We have lots of Mitsu customers and I love Evos, but in the spring I decided I was tired of hearing that Evos can run a 9 second pass on a stock shortblock and Subarus can't....so I broke that record with my road course Subaru. Then Wednesday the VF48 (stock STI turbo) record was knocked down to 11.3 and I decided before someone else took away the right to say Evos can run 10s on stock turbo and Subarus can't, I had one of my techs slap a VF48 on my 95 Impreza Thursday. On the dyno it made the same HP I made with my old rally car and a VF39, but with a lot more torque (570 ft lbs)! I didn't spend much time on the tune, but I can probably get HP to hold better at high RPM if I try. The "charge pipe" I rigged to make this work is also pretty comical and I put nothing on the compressor inlet so it was sucking hot air off the top of the engine. There's definitely room for improvement. I'll let others find the limit. As mentioned there was no track prep after the rain so the track wasn't as good as it usually is, but I got the job done with a 10.97 followed by a 10.96. This is the first VF48 (or any stock Subaru turbo from a North American car) in the tens and the quickest ever. To be clear this turbo is off a stage 2 car and it has not been ported or otherwise molested to enhance its performance. This may also be the fastest trap speed for one of these turbos, but I'm not sure. Here's my warmup pass timeslip. The launch stunk, but 100 mph at the 1/8 and 123.9 mph at the 1/4. This video is the second 10 second pass, the 10.96 at 123 MPH. On this one I must have magically found a spot with grip because it seems it would have held more power on the launch. www.InnovativeTuning.com www.facebook.com/MikeAtInnovativeTuning www.facebook.com/InnovativeTuning Last edited by Innovative Tuning; 10-21-2013 at 04:19 PM. |
10-19-2013, 02:47 AM | #2 |
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Congrats mike!
You didn't have to raise the bar so fast though lol. My hangover wasn't even over! I believe this record we are all chasing is the "no nos" record as there have been vf's in the 10's on nos for a while. |
10-19-2013, 09:15 AM | #3 |
Former Vendor
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Join Date: Aug 2004
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Ah good to know! Maybe I should put nitrous on. LOL
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10-19-2013, 02:49 AM | #4 |
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Weight of the car? That's insane and so is the torque! Congrats on the first ever 10sec pass on the stock vf turbo!
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10-19-2013, 07:25 AM | #5 |
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Congrats, Mike! ****ing nuts!
Sooo....who's going to post this to evo-m... Last edited by CatfaceType-R; 10-19-2013 at 09:06 AM. |
10-19-2013, 07:42 AM | #6 |
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Congrats Mike! That's raising the bar! Can you post a bit more info on the car?
Thanks, Allan |
10-19-2013, 07:50 AM | #7 |
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This is getting very interesting. 10's on stock location turbo is insane and all that torque is crazy too.
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10-19-2013, 09:16 AM | #8 |
Former Vendor
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10-19-2013, 07:55 AM | #9 |
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Okay here is a 11.3 pass and
Its gone. Very nice! |
10-19-2013, 09:12 AM | #10 |
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Man I should have went up to Toronto last night lol. Congrats on the passes, I love watching this car rip up the road courses, it's awesome that it does so well at the strip to.
With so much torque coming on so quick outside of a drag race setting is it jumpy and hard to drive at all? |
10-19-2013, 09:17 AM | #11 | |
Former Vendor
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Quote:
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10-19-2013, 09:49 AM | #12 |
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Oh i see, i just looking and saw 95 impreza and assumed your road car. This was the white gc8 that won the cscs drag series this year just with a vf?
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10-19-2013, 10:09 AM | #13 | ||
Former Vendor
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Quote:
Quote:
This is the car for those who haven't seen it. It normally runs a street car class so it has interior, passenger seat etc. We didn't take anything out for this and I left the parachute assembly on. It's about 2575-2600 lbs + my weight so lighter than some, but a lot heavier than others that don't compete for championships in street class. Last edited by Innovative Tuning; 10-19-2013 at 10:18 AM. |
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10-19-2013, 09:38 AM | #14 |
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Wow! Nicely done.
I'm waiting for the "torque is bull****" comments... |
10-19-2013, 09:52 AM | #15 |
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Wow!
Now that is torque Congrats on the 10's! |
10-19-2013, 10:28 AM | #16 |
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Oops yea i didn't word that right, i meant to say as in this is the same setup you guys ran in cscs but the only change was you went to a little vf turbo for the record run.
Rotated vf or went back to stock location? I've check this car out in the pits quite a.few times as well and was always impressed by it. |
10-19-2013, 06:14 PM | #17 | |
Former Vendor
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10-19-2013, 11:13 AM | #18 |
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Congrats guys!! Raising the bar!! We're out agin today. 3000lb with driver with better conditions. Fingers crossed!!
-Mikey |
10-19-2013, 11:16 AM | #19 |
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10-19-2013, 11:43 AM | #20 |
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I'd really love to know what it takes to make that kind of torque curve!! 300 ft-lb @ 2700 rpm would be a blast.
What engine mods? 2.5l? Pistons? bearings? heads? cams? etc. |
10-19-2013, 12:46 PM | #21 |
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Would welding the WG shut still be considered a stock turbo record? Seems like there isn't really much need for one on a tune like this.
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10-19-2013, 06:16 PM | #22 | ||
Former Vendor
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It's common practice to weld it or use a bracket to hold it shut and run an external wastegate. We stuck a bracket on. |
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10-19-2013, 11:12 PM | #23 |
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Absolutely mad.
I never imagined VF cars moving out like these. That powerband looks insane. Please tell me you got a video of this pass. |
10-19-2013, 11:25 PM | #24 |
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Great run(s)! Congrats!
Maybe I missed it, but what is the weight on this car? And what is the motor setup? Over 360WHP from 3,400 to 6,400rpm's is quite a powerband for a stock STI turbo! |
10-19-2013, 11:40 PM | #25 |
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