15/06/2026 7:36 am
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I just got the new FL5 and the heat soak is way worse than my old FK8 was. I have a track day at Willow Springs in two weeks and the car is already pulling timing after a few hard pulls. I thought I knew these platforms but this is a mess. I need to know what performance mods are actually essential before I cook the engine.
Constraints:
- 2500 dollar budget
- Still gotta be a daily driver
- Must be in stock to ship to SoCal now
Should I prioritize a bigger intercooler or a dedicated oil cooler first? Or maybe just aggressive camber bolts to save the tires? What are you guys using to survive the track heat...
3 Answers
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15/06/2026 8:10 am
The FL5 is amazing but runs hot! You gotta prioritize cooling. Here are two fantastic options:
- Mishimoto Performance Intercooler Kit Honda Civic Type R FL5: Incredible for dropping charge air temps. It stops the ECU from pulling timing.
- HKS Oil Cooler Kit Honda Civic Type R FL5: Fantastic for oil temp stability. This prevents limp mode during hard sessions. Intercooler helps power consistency, while the oil cooler protects the block. Both ship fast to SoCal!
10
15/06/2026 9:10 am
> I have a track day at Willow Springs in two weeks and the car is already pulling timing after a few hard pulls. You gotta prioritize the radiator! I absolutely recommend the CSF High-Performance All-Aluminum Radiator Honda Civic Type R FL5 for maximum reliability. It works by significantly increasing fluid capacity and surface area for heat exchange. This methodical approach ensures your coolant temps stay stable under peak load. Its amazing how much better the car handles the heat. You wont regret it!
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15/06/2026 8:20 am
Unfortunately, my setup didnt fix the issue.
- Logs showed IATs spiked 40 degrees.
- Still saw 260 degree oil temps.
- Spent $1500 and ended up pretty disappointed, honestly.