IS F (2008-2014) Discussion topics related to the IS F model

Check this ISF RR Racing S/C with Snow Performance stage 2 meth kit

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Old 02-16-18, 10:31 PM
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Weapon F
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Default Check this ISF RR Racing S/C with Snow Performance stage 2 meth kit 619whp

By adding Snow Performance stage 2 Meth Kit and dyno tuning this ISF made 619whp and 498wtq nice numbers.

Last edited by Weapon F; 02-17-18 at 06:23 AM.
Old 02-17-18, 12:32 AM
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Ramfis
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Originally Posted by Weapon F
By adding Snow Performance stage 2 Meth Kit and dyno tuning this ISF made 619whp and 498wtq nice numbers.
https://youtu.be/gKNhzyp1VbI
Impressive numbers
Old 02-17-18, 05:22 AM
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Joker4096
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That's freaking great lol.
Old 02-17-18, 07:41 AM
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FFM
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Now that’s more like it!
Old 02-17-18, 07:53 AM
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MileHIFcar
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I know the guy, talked him into getting the S/C kit from RR

The shop had issues tuning the car because of the methanol added, but they worked with Rafi to get the car tuned and sorted out properly. It is nice to see ISF's being tuned more than FBO out in the wild
Old 02-17-18, 08:01 AM
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Leander311
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Wow! What's a meth kit like that run? Is RE going to offer that as an option moving forward?
Old 02-17-18, 08:18 AM
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MileHIFcar
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The meth kit was offered by the shop (R.P.M.) that did the install. To my knowledge RR racing does not offer the meth kit with the S/C kit as that was a custom shop thing that they wanted to try and incorporate into the kit, hence they needed Rafi's help to tune it to make power.
Old 02-17-18, 08:39 AM
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Leander311
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Hmmmm. Was born in Denver, but CO is a little far from me.
Old 02-17-18, 10:38 AM
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Weapon F
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Great to see Rafi helping other shops continue to help develop our platform. It's a testament to his commitment to the Lexus family. 619whp is amazing that's over 720 crank horsepower! Think what RCF or GSF would put down since they're making around 50 more whp that would put them around 670whp mark. For all three vehicles this is a huge bump up in potential horsepower and torque gains. To give you some more perspective as to how massive again this is I taken this information from Hot Rod Magazine where they posted wheel horsepower of the Hellcat the ZL1 Camaro and GT500 Mustang

From Hot Rod Magzine
"That said, the Dynojet at Kenne Bell is no ordinary Dynojet. In order to reduce statistical noise, this facility is hermetically stabilized at 72 degrees F and 60 percent relative humidity, and its cooling fans are calibrated to produce the same rate of flow over the front on every run. The added expense allows Kenne Bell the benefit of more granular test data, which results in more precise tuning, and higher power output for each kit they design.



Strapped to the dyno, the eight-speed automatic-equipped ’15 SRT Hellcat Challenger from Chrysler’s West Coast media fleet produced a corrected rear-wheel peak of 620 hp, happening at the fuel-limited 6,200-rpm redline in Fourth gear. (Rear-wheel torque maxed at 579 lb-ft at 4,200 rpm.) By comparison, a stock ’13 Chevy Camaro ZL1 six-speed automatic maxed out at 465 hp at 6,300 rpm (also run in Fourth gear and limited electronically by fuel), and 473 lb-ft of twist at 3,700 rpm. The completely stock ’13 Ford Mustang Shelby GT 500 was a six-speed manual trans model, and in Fourth gear, put out peaks of 587 hp at 6,400 rpm and 575 lb-ft at 4,300 rpm."

That puts owner of RR RACING S/C with Snow Performance meth kit basically the same 620whp as stock Hellcat and just 81lbtq less. When you consider the curb weight of the Charger 4600lbs and Challenger 4500lbs thats 700lb to 800lb deference power to weight ratio to the advantage of the ISF.
Old 02-17-18, 12:56 PM
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semnosNSX
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Impressive numbers! Makes me wonder where the "breaking point" is. We are just now, 10 years after the first production run, starting to test the true potential of what the car can handle. Now id like to know what part will become the weak link first.... motor? Trans? Axles?
Old 02-17-18, 03:09 PM
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Leander311
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Awesome perspective, WeaponF!!

For weak point, I thought ring lands had been an issue on some higher mileage ISF's with RRR's SC only...
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