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-   -   First 9 second 1/4 Mile Pass, 9.97 at 140 mph Edition 1 Coupe (https://mbworld.org/forums/c63-c63s-amg/739265-first-9-second-1-4-mile-pass-9-97-140-mph-edition-1-coupe.html)

DSawyer63 03-21-2019 10:39 AM

First 9 second 1/4 Mile Pass, 9.97 at 140 mph Edition 1 Coupe
 
I ran my car at Beech Bend Raceway Park in Bowling Green Kentucky last weekend. The track was not prepped for street cars because they were doing bracket racing with a big payout and just needed consistency so traction was an issue, but I will try again on a better prepped surface in a couple weeks and hopefully get deeper into the 9s.

Quick mod list:
YP4 Turbos
3" downpipes
AWE Track exhaust
CF Air intakes
Comp Spec Cooling System
AEM Meth injection
Wavetrac LSD
2.65 Final Drive Ratio
Stock transmission tuned for more line pressure
stock engine internals
305/35/18 MT ET Street Drag Radials on CCW wheels

Full Interior
Fuel was 93 octane blended with 110 Renegade



purplewidow 03-21-2019 10:57 AM

Epic congratulations!!! My buddy who has met you showed me last night at his shop. Amazing!!!

Schulminator 03-21-2019 02:44 PM

Great run Doug!! What is your rear wheel size/offset? What did you find the best way to launch?

tekfoc 03-21-2019 03:17 PM

Congrats.
What was the cost of the new LSD

DSawyer63 03-21-2019 04:11 PM


Originally Posted by purplewidow (Post 7711073)
Epic congratulations!!! My buddy who has met you showed me last night at his shop. Amazing!!!

Thanks brother!


Originally Posted by Schulminator (Post 7711288)
Great run Doug!! What is your rear wheel size/offset? What did you find the best way to launch?

Thank you! 18x11 +51 CCW C10 Corsair


Originally Posted by tekfoc (Post 7711329)
Congrats.
What was the cost of the new LSD

I believe it was around $1400 with bearings, seals and shipping

Vader-C63sE1 03-21-2019 05:22 PM

Wow, that's impressive, congrats!!

shardul 03-21-2019 05:38 PM

Congrats...................

DaRuzzian 03-21-2019 06:01 PM

Amazing run! I just tuned mine, can hardly wait for a track day

KJ 03-21-2019 06:51 PM

Awesome achievement, congratulations!

Now it's time to race Brooks in his McLaren 720S!

FDNewbie 03-21-2019 09:12 PM

Nice run!


Originally Posted by DSawyer63 (Post 7711061)
Stock transmission tuned for more line pressure

Could you elaborate more about this? Still haven't seen much info about this on the forum.

thebug44 03-22-2019 04:35 PM


Originally Posted by FDNewbie (Post 7711600)
Nice run!

Could you elaborate more about this? Still haven't seen much info about this on the forum.

This...

CarHol 03-22-2019 10:36 PM

how much nitrous running in car?

DSawyer63 03-24-2019 04:45 PM


Originally Posted by FDNewbie (Post 7711600)
Nice run!

Could you elaborate more about this? Still haven't seen much info about this on the forum.


Originally Posted by thebug44 (Post 7712351)
This...

Through tuning we were able to achieve more transmission line pressure at WOT to hold more pressure on the clutch packs. The result is zero slipping and a big increase in torque capacity. There is no sacrifice in drivability because at lower throttle and load values the transmission is still running stock pressure. Just quicker Full throttle shifts and increased torque capacity.


Originally Posted by CarHol (Post 7712647)
how much nitrous running in car?

Silly question, but I will answer it anyway. No nitrous is necessary to make 1000 bhp out of the m177 when using twin 58/76 turbos and no nitrous is being used. The car that went down the track is the same car that I drive to the store or to work, same tune, same weight, same power adder.

raudiace4 03-25-2019 11:59 AM

Awesome time! That trap speed is just as impressive too. Congrats!

FDNewbie 03-25-2019 05:52 PM


Originally Posted by DSawyer63 (Post 7713811)
Through tuning we were able to achieve more transmission line pressure at WOT to hold more pressure on the clutch packs. The result is zero slipping and a big increase in torque capacity. There is no sacrifice in drivability because at lower throttle and load values the transmission is still running stock pressure. Just quicker Full throttle shifts and increased torque capacity.

Awesome. I heard a while back something similar from Andrew (power technik) about increasing the trans line pressure through tuning. Who did the TCU tune for you? And my understanding is it has to be loaded on-site as the TCU is located on the trans itself? Would love to see if the shop who did this for you sells the tune file that you could then load onto your vehicle locally...

thebug44 03-25-2019 06:29 PM


Originally Posted by DSawyer63 (Post 7713811)
Through tuning we were able to achieve more transmission line pressure at WOT to hold more pressure on the clutch packs. The result is zero slipping and a big increase in torque capacity. There is no sacrifice in drivability because at lower throttle and load values the transmission is still running stock pressure. Just quicker Full throttle shifts and increased torque capacity.


Originally Posted by FDNewbie (Post 7715003)
Awesome. I heard a while back something similar from Andrew (power technik) about increasing the trans line pressure through tuning. Who did the TCU tune for you? And my understanding is it has to be loaded on-site as the TCU is located on the trans itself? Would love to see if the shop who did this for you sells the tune file that you could then load onto your vehicle locally...

Hmmm, I wonder if this is the answer to transmission limitations for this platform along with the w212... what he said curious to know more details about the tuning

mr747 03-25-2019 06:50 PM


Originally Posted by FDNewbie (Post 7714970)
Awesome. I heard a while back something similar from Andrew (power technik) about increasing the trans line pressure through tuning. Who did the TCU tune for you? And my understanding is it has to be loaded on-site as the TCU is located on the trans itself? Would love to see if the shop who did this for you sells the tune file that you could then load onto your vehicle locally...

For m177 and m178 platform TCU is tunable via OBD not TCU

And there are only a handful of people on this earth that can do it

BMS 03-25-2019 08:38 PM

Congrats!

DSawyer63 03-27-2019 10:38 AM


Originally Posted by mr747 (Post 7715031)
For m177 and m178 platform TCU is tunable via OBD not TCU

And there are only a handful of people on this earth that can do it

The TCU is in fact tunable via OBDII

C3504matic 03-27-2019 10:55 PM

Its definitely a fast pass but I can't help wonder why a 2.65 final was chosen ? Usually most would run in the 3. something rather than go down in the mid 2's . With my race car ( a 5.0 mustang ) I ran 4.11's with tall tires , making 1260 hp and ran mid 8's at 164 mph . Was the car more set up for 1/2 mile ?

FDNewbie 03-28-2019 03:18 AM


Originally Posted by mr747 (Post 7715031)
For m177 and m178 platform TCU is tunable via OBD not TCU

And there are only a handful of people on this earth that can do it

So...who are these ppl so I can inquire about getting a TCU tune via OBD?

AV1 03-28-2019 09:54 PM


Originally Posted by C3504matic (Post 7717226)
Its definitely a fast pass but I can't help wonder why a 2.65 final was chosen ? Usually most would run in the 3. something rather than go down in the mid 2's . With my race car ( a 5.0 mustang ) I ran 4.11's with tall tires , making 1260 hp and ran mid 8's at 164 mph . Was the car more set up for 1/2 mile ?

The above is what most people do.

I'm thinking the taller diff ratio was selected to reduce wheel spin and improve traction because of the torque levels, also would give higher terminal speeds

mr747 03-29-2019 12:13 AM

Taller diff ratio was so he passes the line in 4th gear instead of 5th gear

AV1 03-29-2019 02:37 AM


Originally Posted by mr747 (Post 7718182)
Taller diff ratio was so he passes the line in 4th gear instead of 5th gear

Makes sense, solved :)

Judson145 04-14-2019 09:32 PM

How do you like the YB4 turbos? I see many customers with great results. Do you have more photos of them on the car?

Do you think there is more left in improving your times? Have you thought about reducing weight? I know here in Gulf we can have option of light weight seats and so on.

Great job once again. First and only 9 second c63.


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