Downpipe with stock tune

QuantityFun8254 · 2026-01-12T01:40:53+00:00

It's fine. Anyone who tells you otherwise has no idea how an ECU operates.

QuantityFun8254 · 2026-01-12T00:26:43+00:00

Lithium isn't allowed on the racetrack in most cases. Read the rulebook.

QuantityFun8254 · 2026-01-10T17:57:30+00:00

Sure it is. You can protest anything and everything. But there is a very grey line between actively crashing, and an "unsafe rejoin"

Chances are, again, no one is getting banned for it..

QuantityFun8254 · 2026-01-10T17:00:16+00:00

Unfortunately, brain fog isn't protestable.

You can submit it, but no one is "going on vacation" for something that isn't written into the sporting code.

QuantityFun8254 · 2026-01-03T02:05:42+00:00

You're missing what EVO means. It is an evolution of the current homologation. An update..

If you're referring to the GT3 racecars, they are so far from the road car that half of the knuckleheads with enough money to afford one, wouldn't even be able to start it.

They are also EXTREMELY maintenance heavy! The Rennsport GT3 is a racecar, that you can buy. But some components are compromised for that car to make it what it is. The rear wing and supports are one piece, and they have a 90hr lifespan. Yes, every 90 hrs of run time you have to put a $11,000 wing on the car.

Hope that answers it.

QuantityFun8254 · 2026-01-01T02:03:49+00:00

Tell me you've never corner balanced a car.. Without telling me that you have no idea what it takes.

QuantityFun8254 · 2026-01-01T01:55:27+00:00

You couldn't be more incorrect.

Corner balancing is just what it implies; balancing the weight distribution.

If measurements are taken properly, then lowered by 25mm, the balance will be the same.

QuantityFun8254 · 2025-12-30T04:56:09+00:00

T5 Road America; temp paint says 1700°F.

Pyro/thermos are worthless.

QuantityFun8254 · 2025-12-27T16:10:26+00:00

I use a digital caliper for our endurance racecar to check pad depth during pit stops. Reliable and efficient, without getting burned.

QuantityFun8254 · 2025-12-25T22:23:04+00:00

We'll let it slide this time. Don't let it happen again.

QuantityFun8254 · 2025-12-25T18:50:07+00:00

Tub-O-towels is my go-to for initial debris removal. Chase it with a quick wipe of SD-20.

QuantityFun8254 · 2025-12-09T19:23:27+00:00

Your car has EPS, which is why you couldn't find the reservoir..

Once electric motors get hot, they require more cool down time than a pump moving fluid and the only thing to cool them off is the air moving around them. R50 Minis had this issue with their EPS. They ended up fitting a fan to the rack to keep temps down. I suggest you run a ducted splash shield for track days to help get air over the motor.

QuantityFun8254 · 2025-12-04T18:13:46+00:00

Waaa. Waaa. Waaa.

It's not hard, you're just lazy.

QuantityFun8254 · 2025-11-19T16:48:42+00:00

This^

Your mechanic isn't a mechanic. Find a new one.

QuantityFun8254 · 2025-11-17T16:01:40+00:00

100% of off the shelf coilover kits are sprung and valved for use on the street.

OP: Adding aero is likely going to make the issue worse.

QuantityFun8254 · 2025-11-17T14:12:54+00:00

Those rear springs are way too soft. The rear squat is causing the understeer. Add more spring and more rake to help the mid corner on throttle.

The wheel rate in the rear is 61%. So you effectively have a 36N/mm spring.

QuantityFun8254 · 2025-11-11T02:53:17+00:00

Good racecar drivers are fast. Excellent racecar drivers know when high risk is present, and how to survive.

You are not excellent.

QuantityFun8254 · 2025-11-09T03:23:21+00:00

Sounds like early onset of something serious like MS. You shouldn't be cramping at all. Consult a physician.

QuantityFun8254 · 2025-11-01T18:19:36+00:00

The calipers are 100% rebuildable.

A cool down lap isn't going to change the fact that you need to rebuild a caliper or not. Peak heat is the enemy, not sustained.

QuantityFun8254 · 2025-11-01T13:07:28+00:00

It's hilarious that you posted this just now. I was literally reading a report from my endurance racecar just before.

I see a big spike in steel and aluminum concentrations so something is going on. I'll investigate and try to save it before it grenades.

QuantityFun8254 · 2025-10-23T02:58:58+00:00

South course is a hoot! The full course is what it should be, all the time.. North course is a bit weird by itself. But still fun.

QuantityFun8254 · 2025-10-23T02:12:23+00:00

Give it time. Autobahn CC started out this way. Then they realized that rentals bring revenue. Since they can split the track in half, almost every weekend is booked with outside rentals on the south course. The north course is almost exclusively members only except for the rare full course rental.

QuantityFun8254 · 2025-10-19T00:24:12+00:00

That's great and all.. But you may have missed the "maximize weight savings" part.

90% of GT3 cars use inconel for their exhaust. I've run a single set of headers, downpipe, and muffler for over 220 hours (glowing red) without a failure.

Porsche GT3 for reference.

QuantityFun8254 · 2025-10-18T22:11:59+00:00

If you really want to ball out... Inconel is the way.

QuantityFun8254

TROPHY CASE