RC F (2015-present) Discussion topics related to the RC F model

New RCF HP record??

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Old 09-06-16, 06:20 AM
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LRCSALES
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Default New RCF HP record?? video added 9-10-16

So i visited my Local performance shop http://weaponxmotorsports.myshopify.com/ in town that had a Mustang dyno, just to check my AFR while under the nitrous hit.My First pull NOT ON THE SPRAY shocked me completely i expected to have around 420 to 430whp. But what I put down was 468whp and 380wtrq. The temp was mild 75 degrees. They got tach signal from my Coil pack one. The number has been SAE corrected I will try to visit another dyno possibly a dynojet when i have time so i can confirm the number.

https://youtu.be/dkDPX45s4oM0\


Mod list :
Ppe equal tlength headers catless
Apexi N1 header back exhaust
Apexi throttle controller
Custom intake
Morroso oil breater custom
K and N filter
Custom Nitrous Express system
135 hp wet shot 60 nos jet 31 fuel
Nitrous Express RPM Window switch
Nirtous Ex[ress Blanket thermostated
Royal Purple 5/30
Vossen Precision Series Forged 20in wheels custom built
RSR lowering springs
Lexon Japan Exclusive lip kit
DCTMS Carbon Fiber steering wheel


Results:
NA Pull-----------468whp and 380wtrq

NOS Pull---------596whp and 53wtrq


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Last edited by LRCSALES; 09-10-16 at 12:55 PM.
Old 09-06-16, 07:12 AM
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TruPlaya26
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Awesome numbers, just a question though. What is a "safe" nitrous setup for this car? 100 shot max? I want to increase performance but since this is a lease I don't want to go crazy and risk blowing the motor.
Old 09-06-16, 07:36 AM
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I think i am at the limit for the stock fuel system and the transmission capabilities. Nitrous being safe is only as safe as you make it. I have followed the footsteps of the ISF boys and have talked to 2 other RCF nitrous owners. They were using 200 shots. like i said i think the car's ability on stock fuel is 600 whp

Originally Posted by TruPlaya26
Awesome numbers, just a question though. What is a "safe" nitrous setup for this car? 100 shot max? I want to increase performance but since this is a lease I don't want to go crazy and risk blowing the motor.
Old 09-06-16, 04:58 PM
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DougHII
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That's crazy man. Big bump for a NA engine.
Old 09-06-16, 05:47 PM
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Hell ya thanks I need to cross check the numbers for the na


Originally Posted by DougHII
That's crazy man. Big bump for a NA engine.
Old 09-06-16, 05:48 PM
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IMCHIA
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Very impressive.
Old 09-06-16, 06:04 PM
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Nice numbers! Also on a mustang dyno. Respect
Old 09-06-16, 06:22 PM
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just a different perspective since Ive asked a few folks.....

" Mustang Dyno, the results can be all over the place. Also the curve seems to be off, as RCF’s do not hit peak power at 7200. They actually peak around 6300 and stay flat (due to the cams).
So…. If his is peaking at say 7000… and since the Mustang relies on calibration of wheel speed and RPM (user input)
So… if 7000 is really something lower, like say 6500, and since HP=(RPM*Torque)/5252… that would account for a reading that is 10% too high. If the RPM-to-wheel speed error is just 300rpm, then the error would be 6%... and 6%*430hp=about 25hp."

Not my words yet just another scientific view of how the numbers can lie on a dyno. This car defies all logic against many on the forums. Yet per the above, it lies directly in line with many's dyno graphs. Being a spectator, Im inclined to agree with the stated hypothesis
Old 09-06-16, 07:18 PM
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This is why I'm not overly fond of dynographs. It's also why I establish good stock baseline 1/4 mile runs with all of my rides, even if I'm not making them into drag racers. So when I start modding I can see the real world results with little margin for error or dispute.

I'll be hitting my local drag strip with my RC F when I get back home. I still have the factory air filter installed.


It's still a nice dynograph though...
Old 09-07-16, 07:28 AM
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Originally Posted by DougHII
That's crazy man. Big bump for a NA engine.
Originally Posted by Davew77
This is why I'm not overly fond of dynographs. It's also why I establish good stock baseline 1/4 mile runs with all of my rides, even if I'm not making them into drag racers. So when I start modding I can see the real world results with little margin for error or dispute.

I'll be hitting my local drag strip with my RC F when I get back home. I still have the factory air filter installed.


It's still a nice dynograph though...
Sounds fun ! Let us know if you get better than a 12.8!
Old 09-07-16, 07:53 AM
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Originally Posted by DougHII
That's crazy man. Big bump for a NA engine.
Originally Posted by Davew77
This is why I'm not overly fond of dynographs. It's also why I establish good stock baseline 1/4 mile runs with all of my rides, even if I'm not making them into drag racers. So when I start modding I can see the real world results with little margin for error or dispute.

I'll be hitting my local drag strip with my RC F when I get back home. I still have the factory air filter installed.


It's still a nice dynograph though...
Originally Posted by JB5674
just a different perspective since Ive asked a few folks.....

" Mustang Dyno, the results can be all over the place. Also the curve seems to be off, as RCF’s do not hit peak power at 7200. They actually peak around 6300 and stay flat (due to the cams).
So…. If his is peaking at say 7000… and since the Mustang relies on calibration of wheel speed and RPM (user input)
So… if 7000 is really something lower, like say 6500, and since HP=(RPM*Torque)/5252… that would account for a reading that is 10% too high. If the RPM-to-wheel speed error is just 300rpm, then the error would be 6%... and 6%*430hp=about 25hp."

Not my words yet just another scientific view of how the numbers can lie on a dyno. This car defies all logic against many on the forums. Yet per the above, it lies directly in line with many's dyno graphs. Being a spectator, Im inclined to agree with the stated hypothesis
I was hoping to have an engineer chime in. Thanks for your opinion!
Old 09-07-16, 08:55 AM
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Originally Posted by JB5674
just a different perspective since Ive asked a few folks.....

" Mustang Dyno, the results can be all over the place. Also the curve seems to be off, as RCF’s do not hit peak power at 7200. They actually peak around 6300 and stay flat (due to the cams).
So…. If his is peaking at say 7000… and since the Mustang relies on calibration of wheel speed and RPM (user input)
So… if 7000 is really something lower, like say 6500, and since HP=(RPM*Torque)/5252… that would account for a reading that is 10% too high. If the RPM-to-wheel speed error is just 300rpm, then the error would be 6%... and 6%*430hp=about 25hp."

Not my words yet just another scientific view of how the numbers can lie on a dyno. This car defies all logic against many on the forums. Yet per the above, it lies directly in line with many's dyno graphs. Being a spectator, Im inclined to agree with the stated hypothesis
i noticed that hp =/= tq at 5252 on the graph. they actually cross at 4584, if im reading it correctly...
Old 09-07-16, 09:49 AM
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LCRSALES, what did you do to remove the CEL lights from running the headers and catless exhaust?


Originally Posted by LRCSALES
I think i am at the limit for the stock fuel system and the transmission capabilities. Nitrous being safe is only as safe as you make it. I have followed the footsteps of the ISF boys and have talked to 2 other RCF nitrous owners. They were using 200 shots. like i said i think the car's ability on stock fuel is 600 whp
Old 09-07-16, 12:42 PM
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Originally Posted by SmurFPwr
LCRSALES, what did you do to remove the CEL lights from running the headers and catless exhaust?

drove it with the lights on for a few days clearing the codes with a scanner. then i pulled efi fuse and let sit for 30 mins
Old 09-07-16, 01:28 PM
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Originally Posted by LRCSALES
Sounds fun ! Let us know if you get better than a 12.8!
I certainly will! I'll also have a video of it. If I don't get better than a 12.8 then it will be the first time I've never been able to beat the advertised 1/4 mile time.


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