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I can’t really speak for autocross, but from my experience attending a few events, it definitely feels safer in the open lot and lower speeds. On my tracks, I’m seeing speeds anywhere from 110 mph up to 149 mph, with some corners taken at around 125 mph. I’ve tried running higher psi, like 35...

I’m currently running 25 psi cold and about 30 psi hot. I’ve also tested 30 psi cold and 35 psi hot, but I feel that setup didn’t give me enough grip. I can probably go lower than 30psi hot but it eats the inner tires more/faster.

I’d pick WOT, but that alone won’t solve the cooling issues (depending on the weather temp). You’ll still need dual engine oil coolers and proper airflow. The HEL setup isn’t enough, I tried that one first, and it couldn’t keep temps under control.

Ive chased GT3 RSs at Buttonwillow before. With an experienced driver behind the wheel, that car will absolutely spank my Type R. At the time I was only on a Phearable tune, and even then I could keep up with one through the corners, because the drivers didn’t seem fully familiar with the track...

I’d love to, but I already have other commitments on that date. I was hoping around January or February, if the weather allows. With Willow springs reportedly doubling their prices next year (rumor has it, over $500 per track day), Buttonwillow will probably be the best option.

Yes, with the flex fuel setup. that’s exactly why I had a shop handle all the engine mods and get it dyno tuned on the same day.

More better pics

I’m really not a fan of those tire barriers. Having gone off this track twice before, I can say they’re extremely dangerous. There’s no room for mistakes, if my brakes give out, or if I understeer or oversteer, it could end badly. I already know of three crashes here because of those barriers...

If you look at my track build, my car is heavily modded but tuned conservatively, 500 plus whp and 400 plus wtq on E85/E50. I don’t daily it or drag race, it’s a dedicated track car that sees about 6x - 10x events per year. From my experience running at Buttonwillow, Streets of Willow, and Big...

night run at the track.

First time running at Streets of Willow since the renovation and the addition of the tire barriers and they’re pretty sketchy. I’ve already seen a few cars make contact with them. Back when there were no barriers, I went off track twice myself, but at least it was safer to go off into the dirt...

This was recorded today after 14 laps. The LOG R shows 82 F ambient temperature, 197 F water temp, and 231 F oil temp. Pay attention to the left-side gauge, it’s blinking, but it actually indicates 212 F. That’s the true temperature of the engine oil circulating through the oil cooler. I also...

No, I went with a custom setup. I bought a dual 25-row oil cooler and fabricated my own mounting solution. Back in Aug-sept 2024, the CSF oil cooler wasn’t available yet, so I modified the bumper and routed flexible duct hoses on each side to direct airflow straight to the oil cooler.

I haven’t seen any meaningful difference between Mobil 1, Valvoline Full Synthetic, Pennzoil Ultra Platinum, or AMSOIL Signature. I typically change my oil every 5–6 track days, and unless there’s solid, peer-reviewed data proving otherwise, I don’t believe the differences are significant enough...

I tried using the resistor trick, but it didn’t work, so the issue is always present. I’m not too concerned about that code since I understand what’s causing it.

Any chance you can share some sound clips? I’m seriously considering this exhaust. Being in CA, I’m wondering how the cops handle it.

thank you!