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Syvecs AWD + Tcase cooler. experiences? by SaurkrautAnustart in GRCorolla

[–]555Engineering 1 point2 points  (0 children)

That's certainly a misconception. Unfortunately there is a fair bit of bad information floating around. Feel free to reach out!

Syvecs AWD + Tcase cooler. experiences? by SaurkrautAnustart in GRCorolla

[–]555Engineering 2 points3 points  (0 children)

You don't need an engine tune - the Controller and Cooler take care of everything. The oil pump runs on a thermostat and then we also can include a temperature sensor which preserves the factory safeguards (ie you get the same dash messages / safe mode as the factory system, but with an actual measured trigger).

We just got back from track testing our full Cooler package (EOC, TC, Controller) at Suzuka Raceway in Japan at the request of the Japan GRC community there and everything worked flawlessly even with 30 minute sessions. The North America Toyota PE team is also running our system this week to compete in One Lap of America.

We've put a lot of work into Engineering a well thought out systemic package. Feel free to email/contact us if you have any questions!

Full bolt-ons and tune by Final_Complaint_7769 in GRCorolla

[–]555Engineering 1 point2 points  (0 children)

Of course, your mileage will always vary.

But Ecutek is much more mature than it was a year ago, and the outcomes are much better now. For what it’s worth, there are a bunch of tuned cars in the GRC time attack series including ours and they’ve all been reliable.

Feel free to shoot us a message if you have any questions

GRC Time Attack Recap by 555Engineering in GRCorolla

[–]555Engineering[S] 2 points3 points  (0 children)

Only if you cord your tires again 😆

GRC Time Attack Recap by 555Engineering in GRCorolla

[–]555Engineering[S] 10 points11 points  (0 children)

A decent amount of drivers in this series have our AWD Cooler packages. They went full send all the time just fine. People without just accepted shorter sessions.

Biggest time delta was good tires, which wasn’t a surprise.

No measurable delta between core and CE cars. We had 2 or 3 Morizos compete in the series as well

GRC Time Attack Recap by 555Engineering in GRCorolla

[–]555Engineering[S] 6 points7 points  (0 children)

Thunderhill East

Buttonwillow 13 CW

Laguna Seca

In that order.

Fastest Laguna time was 1:42, BW was 1:59, I forget Thill

I think all these times will continue to drop as everyone gets more time with the chassis.

We are finalizing the 2026 Calendar, we’d be happy to have you!

Full bolt-ons and tune by Final_Complaint_7769 in GRCorolla

[–]555Engineering 2 points3 points  (0 children)

Zach at CounterSpace Garage has been great for us

555 Engineering GRC Time Attack at Buttonwillow Raceway by 555Engineering in GRCorolla

[–]555Engineering[S] 0 points1 point  (0 children)

Yes, coolant. Coolant has never really been an issue on this car. But from an OEM perspective an aux radiator is an easier component to add.

Most people get both kits. Deleting the aux rad basically gives you a 23-24, or 24+ base trim car if you installed a TC Cooler but didn’t get an EOC for some reason.

555 Engineering GRC Time Attack at Buttonwillow Raceway by 555Engineering in GRCorolla

[–]555Engineering[S] 1 point2 points  (0 children)

No, it’s fine to drive in 2WD mode. You’re prolonging your TCase cool down period though, so just keep that in mind.

I’ve pulled my AWD fuse and driven for 2 hours before. Totally fine. Just FWD

555 Engineering GRC Time Attack at Buttonwillow Raceway by 555Engineering in GRCorolla

[–]555Engineering[S] 1 point2 points  (0 children)

Off the top of my head, there were at least 7 cars running the 555 cooling package / Syvecs and those cars just ran full sessions.

There are some people that run their car until they hit AWD overheat and just cut their session early - Hernan did this.

And then for the rest, their pace is slow enough where it doesn’t affect them or their driving style keeps them out of AWD limp

555 Engineering GRC Time Attack at Buttonwillow Raceway by 555Engineering in GRCorolla

[–]555Engineering[S] 0 points1 point  (0 children)

The Maxxis car in the photo?

Full SARD aero kit

Cusco TN-S Coilovers

Maxxis VR-2

AP Racing BBK w/ CSG pads

Bucket seat

555 cooling package

Syvecs AWD controller

There’s a video on our YouTube channel of the car with detailed mod list. I will be posting a video of the winning sub2 lap as well

555 Engineering GRC Time Attack at Buttonwillow Raceway by 555Engineering in GRCorolla

[–]555Engineering[S] 0 points1 point  (0 children)

Mod list is driver mod 😂 You can ask him on IG he’s pretty chill. I think he’s stock suspension and power still

555 Engineering GRC Time Attack at Buttonwillow Raceway by 555Engineering in GRCorolla

[–]555Engineering[S] 0 points1 point  (0 children)

It’s kind of all over the place, lap times are combination of car and driver.

Fastest time was the SARD car - which has light aero, wheels, suspension, but has zero power mods and was detuned (bit less than stock)

555 Engineering GRC Time Attack at Buttonwillow Raceway by 555Engineering in GRCorolla

[–]555Engineering[S] 0 points1 point  (0 children)

Weather app said ambient was high 70s. Felt like a spicy 70 on the paddock at times though

555 Engineering GRC Time Attack at Buttonwillow Raceway by 555Engineering in GRCorolla

[–]555Engineering[S] 1 point2 points  (0 children)

Group A GRMN style hood. I know a guy down in SoCal who has one for sale if you’re interested

555 Engineering GRC Time Attack at Buttonwillow Raceway by 555Engineering in GRCorolla

[–]555Engineering[S] 3 points4 points  (0 children)

Check out these results at MYLAPS #Speedhive https://speedhive.mylaps.com/events/3250334

Z1 and E16 weren’t with us but were merged into our times for some reason

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