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The California Energy Commission unanimously approved the Replacement Tire Efficiency Program, the first regulation of its kind in the country. It requires replacement tires sold for passenger vehicles and light-duty trucks to meet rolling-resistance standards, a measure of how much energy a...

Any opinions? I am not looking for power, just smoothness and responsiveness. https://www.jsracing.co.jp/spl/trev/us/ The J's Racing T-REV System is a one-way reed valve that installs in the crankcase breather line. It creates controlled negative pressure inside the crankcase by blocking air...

Any opinions about manufacturers claims vs real world performance? I am not looking for power, just smoothness and responsiveness. https://www.okadaprojects.com/en/products/pd/ https://www.okadaprojects.com/e_application.php?select_maker=HONDA&select_product=PlasmaDirect I only found one...

My FL5 is the first car I ever modded Obviously, I have very little experience modding, for example, I just learned about the importance of unsprung weight... I do not plan to race or track, but I do drive "enthusiastically". I'd be the first to admit that I am not a very good driver, I...

I am researching lightweight LiFePO4 batteries for about 30lb weight savings, or about 0.94% of the FL5 weight, much easier than loosing 30lb myself :-) I know that I shouldn't replace a perfectly good battery to gain a few thousands of a second in acceleration, improved handling by a few...

The FL5 Civic Type R turbocharger includes a dedicated turbo inlet oil screen, a fine mesh filter in the oil supply line to protect the turbo journal bearings from debris, where even small contaminants can cause rapid wear. The turbocharger oil inlet filter assembly (part number 15533-59B-003)...

Any recommendations for fog lights? UPDATE: I asked Diode Dynamics for recommendation: I myself had a '22 Sport Sedan (Not nearly the same in terms of performance, but identical for the front crash bar!) and mounted some of our SS6 lightbars directly to the bottom of the crash bar. (The...

I am trying to decide between the two Anyone installed and tested the 27Won intake? I have not seen any real world reviews or tests for 27Won, esp for IAT/heat management, power/torque gains/loses, and most important for me, daily drivability I am aware of the increased noise, but would like...

I currently drive a 2007 FA5 which I still love very much, and I cannot imagine shifting at less than 8k RPM, but still, I would like to get new car I've been looking to purchase the FL5 as an obvious choice, yet, even though I can afford it, I find it difficult to pay over MSRP... So I...

the recall notice says 2025 are included. per NHTSA recall report https://static.nhtsa.gov/odi/rcl/2024/RCLRPT-24V744-4093.PDF I know that cars manufactured after September 2024 are not affected, yet there are no VIN numbers in the report. another thread here has the first few 2025 VIN...