05RollaXRS

Basically, exhaust (Apexi) , header and RR tune. First time run and he ran a 12.0@118 mph

Restomod

Nice run

Deanrcf

iTrader: (1)

great run. looks like 20" wheels. Do you know his tire/wheel setup?

MHB1535

That has to be supercharged or one hell of a FBO RC F lol.

05RollaXRS

Supercharged and 118 mph trap speed? That must be a joke ROFL It has exhaust and RR tune with 20 inch wheels. No headers.

Yeah, 20 inch wheels. Not sure about the tires. Only know his mods are exhaust and tune. He could get down with under 2 second 60 foot.

MHB1535

There is another video of that same car running 12 flat. No exhaust and tune RC F is running a 12 flat at 118 especially without a tire. Maybe a supercharger or spray but definitely not possible with just an exhaust and tune lol.

05RollaXRS

Where is that video? S/C'ed RCF run high-120s in trap speed in every RR video. Simply, there have not been enough videos of the RCF. There are videos of RCF with H/E going 1.8 seconds 60 foot in the 1/8th mile. A stock RCF on sea level would trap around 114 - 115 mph. I am stating just what the video poster who was there said. It could be that he has sticky tires (if the same car did do 12.0 seconds with exhaust/tune then it is highly likely). There is no proof he is spraying especially with that trap speed.

Deanrcf

iTrader: (1)

MHB1535

Other than that RC F built by Ekanoo, I haven't seen any other supercharged run even close to that time or speed. Admittedly I haven't found any quarter miles from supercharged RC Fs on YouTube but I have seen supercharged GS Fs running between 118-120. There is a weight difference but performance should be really close between the cars. But if that RC F is really just an exhuast and tune, that is really impressive considering the 60 ft.

CAHWY128

I am confused. Why would a RCF with exhaust and tune not be able to run 12.3? Motortrend got a bone stock one on the crappy original tires to do a 12.7.


https://www.motortrend.com/news/lexu...mbers-clocked/

05RollaXRS

That GSF must not be running right as a $10K supercharger only increases the trap speed by a few miles, does not sound right especially considering the stage 1 offers well over 100 HP increase. I agree the car in the video must have racing slick tires (if it has exhaust and tune only) with 12.0 seconds@118 mph. It says FBO, but the poster of the video says exhaust and tune, which is odd since FBO should have headers.

Here is a video of an RCF with RR racing supercharger with line lock running 11.9 seconds@124 mph.

MHB1535

I actually have never seen that video before. It's good to know that the supercharger shows massive improvements in the quarter mile atleast. I just feel like since most RC Fs are running high 12s stock, just an exhaust and tune having a decrease of about .5-.8 in the quarter are extremely good gains in the quarter. How whp does an exhaust+tune car make?

05RollaXRS

Those high 12s speak to the ability of the driver and/or DA or ability to launch, but the trap speed is usually there of around 114 - 115 mph. You can find mid-12s with basically stock RCFs or 1.8 seconds 60 foot and 8.3 seconds in the 1/8th mile with FBO mods.

RCF with exhaust and tune would make around 420 - 425 whp. If he has headers, it would be around 440 - 445 whp. The tune actually does not give significant peak HP increase. Maybe, around 7 - 8 whp. It just simply "thickens" the powerband. Much more torque/HP available in the midranges.

MHB1535

Ah ok. Now I can't wait til I get my exhaust. Too bad I cant tune mine since it's a '17.

05RollaXRS

Same here. Cannot wait for spring. I am putting mine on first thing as soon as it can take it out.