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Ours is 88.9 mm or 3.5" (ID) .. It's been a working proven design since the 2008 IS F launch and we've carried over the same proven design to the 2015+ RC F and now 2016 GS F
Makes about 4-5 rwhp and it's been independently verified by many owners over the last 7-8 years.
Made out of 6061 T4 Annealed Aluminum + Extrude Honed + Anodized
Sleeper • Black
Lexus F • Blue
IS F • Gunmetal for my personal IS F
I've measured the cost of Titanium & manufacturing to my standards, many times through the years.. Especially after our reseller in Japan took our design and relaunched it in Ti version.
The cost quadruples for the product, yet the power remains the same.. So that is why even after many requests through pm or even on here we have never changed the desgin.
Glad to see RR Racing take this to the next level to give more F owners materal options.
Plus conceptually, theirs is slightly different deleting the Valve cover PCV vacuum lines.
Joe Z
Any idea where we can purchase these? Now that I have seen the black version, I want the sleeper look for sure... I cant find these used anywhere. It should be a fairly easy investment for you with all this demand and no supply.
Any idea where we can purchase these? Now that I have seen the black version, I want the sleeper look for sure... I cant find these used anywhere. It should be a fairly easy investment for you with all this demand and no supply.
We're working on a Large run now...
Filling some back orders first.. Then will have plenty in stock for the Holidays hopefully
I've found that the throttle bodies are different sizes (the RC F is larger) as my Icode silicone intake tube will not swap over to my RC F. I could "make" it fit but, I generally do not roll like that. Also, I was semi- concerned that trying to make it fit on the intake box side could cause me to crush/break that outlet hole which could cause a whole host of other problems. If anyone is interested in the Icode piece its available for $100 plus shipping. PM me.
Dang, the recent development of new exciting mods for this car is definitely appealing to new ISF owners. The lack of aftermarket support has always been in favor of other brands I need not mention on this forum haha.
Has anyone attempted some mild enough cams that the factory ecu could handle? Even another 15-20whp would be pretty sweet NA.
One small point of comedy for all those who are still thinking the problem is on the intake side - the RC F and the IS F use the exact same paper air filter. Think about it for a minute, let it sink in...
Josh from Mod In Japan is good about getting in contact with you whenever he gets intakes in. I was on the waiting list for awhile but then just decided to go with HPS because I got tired of waiting for a JOE-Z one. You can hit him up at jlee@modinjapan.com
Also, I was semi- concerned that trying to make it fit on the intake box side could cause me to crush/break that outlet hole which could cause a whole host of other problems. If anyone is interested in the Icode piece its available for $100 plus shipping. PM me. 
