More miles = more performance

[Frogdog1]

I have about 7700 miles on my GT, with the faster A10. I've clearly noticed that, so far, the more miles it's been driven, the more power the engine puts out on my butt dyno......the most expensive dyno there is, BTW.

Anyone else notice this correlation of additional miles and performance? Just curious. FD1

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[Ewags81]

keep in mind the season change with cooler denser air depending on where you're at. i do feel like air quality has a huge impact on what i feel as far as power... and traction. I know i'll get the side eye for this from everyone but maybe @Starship Enterprise. i feel like my car's computers have a mind of their own, giving me random varying output from the engine. like sometimes I get "hell ya let's go" and other times "eh we'll just hold some back from you". i honestly feel like if i dead launch with launch control, then drive hard corners with the intent to get loose, my car gives me more with all nannies on. like it maybe has trust issues.

 

[LouG]

I possibly have. Since it's 1st service (6500km) it's noticeably perkier.
I gave it the beans overtaking some cars recently, and it went completely feral on that bumpy piece of road, it actually felt like wheelspin when it kicked down at 100kmh.
Quite exciting.

 

[MegaMan]

I’ve noticed less power in the following conditions:
1. Outside temps greater than 100 degrees.
2. driving with the AC on.

I’ve noticed more power (and better mileage- not that it really matters with a V8) when:
1. Outside temps are just right around 70-75 degrees.
2. The more miles I’ve put on the car

 

[D/\rK•650]

I think the same, more miles better performance and driveability. Im at only 5,100 and i do notice a difference from let's say 1,000 or even 3,000. I think because tolerances are so minute on newer motors built in last 5-10 year's or so that the break-in process takes longer maybe?

 

[When Pigs Fly]

The shop that did my Whipple install told me these new Coyote V8s really tend to open up by/around about 10k miles. Whether or not that's true, I have no idea (I'm at about 1400 miles)... but I know that they know a LOT more than me about these engines.

 

[BimmerDriver]

keep in mind the season change with cooler denser air depending on where you're at. i do feel like air quality has a huge impact on what i feel as far as power...

This is absolutely true. It's called science.

Break-in is also a factor.

My cars also run better and faster after I wash them. The cynical amongst you will say that it's all in my mind, but the other people that live in there with me agree, although I wish they wouldn't all speak simultaneously. Makes it hard to concentrate.

What was I saying?

Oh yeah. Colder air = dense air = more horsepower. Even more so for the EB folks with the turbos.

 

[robvas]

Definitely not a thing.

 

[Skye]

https://airdensityonline.com/us-track-list/

This is one site which offers Density Altitude readings. You can also check the web page of the closest airport.

Given Winter conditions, several tracks are showing an air density which is typically present at much lower elevations, sometimes thousands of feet lower than actual. It's a welcome, seasonal boost.

 

[Manual Ronnie]

Im at 3,900 and it feels crisper too. But it probably is the much colder air charge

 

[ChitownStang]

I absolutely noticed a difference in power after 1000 miles.
Like it opened up one day.
There is no doubt

 

[robvas]

 

[davidsteele1975]

This is absolutely true. It's called science.

Break-in is also a factor.

My cars also run better and faster after I wash them. The cynical amongst you will say that it's all in my mind, but the other people that live in there with me agree, although I wish they wouldn't all speak simultaneously. Makes it hard to concentrate.

What was I saying?

Oh yeah. Colder air = dense air = more horsepower. Even more so for the EB folks with the turbos.

Yes. It's ironic that the EcoBoost makes more power precisely when one can't use it so much. Maybe?

I'm sure these engines are rated at the standard atmosphere (77°F I think, certain humidity and pressure), and as I understand most engines aren't supposed to make meaningfully more when it's colder, but even allowing for this the EcoBoost feels quicker. That savage "I'm going to wheelspin at 25mph and make people think you're a hooligan" moment the other morning wouldn't happen in the autumn. The car was new in mid-September and coming up on 7400m now.

I put it down to colder tires, colder road surface, more torque at the wheel. Not sure how much of each it is...

 

[LouG]

I think the same, more miles better performance and driveability. Im at only 5,100 and i do notice a difference from let's say 1,000 or even 3,000. I think because tolerances are so minute on newer motors built in last 5-10 year's or so that the break-in process takes longer maybe?

I've noticed on my new cars that at around 3- 4,000kms they start to show their best. You're possibly right about the break in process, but I think it has more to do with cylinder wall coatings than tolerances.

 

[LouG]

This is absolutely true. It's called science.

Break-in is also a factor.

My cars also run better and faster after I wash them. The cynical amongst you will say that it's all in my mind, but the other people that live in there with me agree, although I wish they wouldn't all speak simultaneously. Makes it hard to concentrate.

What was I saying?

Oh yeah. Colder air = dense air = more horsepower. Even more so for the EB folks with the turbos.

Yep, washing is good for 10hp on the butt dyno. Proven fact.

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