20 Does adding 50whp to a 570S makes it 2s faster than a 675LT, even on Corsas?

Admittedly this is not a stock car, it can be seen at 1:29 in the video that it has a +50whp tune, giving 583whp, exactly the same as a stock 675LT.

http://www.fabspeed.com/mclaren-675lt-fabspeed-ecu-tune/

But surely the 675LT is 112kg lighter and has more downforce, and wider, stickier Trofeo R tyres. So how come such a simple mod makes it 2s faster than a 675LT? And only 1s slower with its amateur owner behind the wheel. Especially when it was 3s slower to begin with.

http://fastestlaps.com/comparisons/9a3p0m339pus

https://www.youtube.com/watch?v=D1JkByomaXA

Porsche 918 Spyder James Sofronas 1:17.18 887 / 1640 Ferrari LaFerrari James Sofronas 1:18.46 963 / 1585 McLaren P1 James Sofronas 1:18.82 916 / 1490

570S + 50whp Bryce Miller 1:20.91

Dodge Viper ACR (Mk V) James Sofronas 1:21.86 654 / 1548 Honda NSX (Mk II) Graham Rahal 1:21.90 581 / 1767 Dodge Viper ACR (Mk V) Alec Udell 1:21.92 654 / 1548 McLaren 675LT Alec Udell 1:22.62 675 / 1328 Porsche 911 GT3 RS (991) Alec Udell 1:22.64 500 / 1420 Veyron 16.4 Super Sport James Sofronas 1:23.01 1199 / 1888 SRT Viper TA Alex Gurney 1:23.40 649 / 1520 Aventador LP750-4 SV Alec Udell 1:23.56 750 / 1525 Pagani Huayra James Sofronas 1:23.76 730 / 1350
1y ago by sroser
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sroser  1y ago

Game over Solomondrin.

Non-pro in Cayman GT4 - 2:15.2 on Thermal Long . I'm sorely tempted to make an article on this too.

https://www.youtube.com/watch?v=JCk6VdloKVE


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sroser  1y ago

Remember - this is a free forum - you are welcome to write and publish your own stuff, if you think there is nothing worth reading and you can do better.

@FastestLaps - We should also add this time as a modified time, as we have done for modified ZR1s here.

http://fastestlaps.com/tests/dbhe73ljb450


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sroser  1y ago

Also he cut off 4.73s from his stock time,so I won't be surprised if it beats 675LT with that much power or be as fast as it.

The graph at 1:29 in the video shows only a 50whp power hike to 583whp. This is exactly the same whp as a stock 675LT on exactly the same Fabspeed dyno.

http://www.fabspeed.com/mclaren-675lt-fabspeed-ecu-tune/

The time improvement was mainly practice and tutelage not tune. He ran 1:26.5 first (different day to 1:28 time), then slowly worked down to 1:23.77. A 50whp hike would only make a difference of about 0.1-0.2s on the quarter mile. The track is 1.8 miles long, so it couldn't possibly make a difference of more than 1s, and likely a lot less, because you would have to brake earlier due to higher speeds on the straights.

In fact looking at the times for tunes vs stock, it's difficult to tell whether it's making any difference on the quarter even.

http://dragtimes.com/McLaren--MP4-12C-Drag-Racing.html

Fiske GTS - Volcano orange.

10.371 stock with R888 tyres, then 10.253 with tune. IMO, the tune on its own is genuinely worth about 0.5s on this circuit.


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sroser  1y ago

Another thing saxy. In the Hyper 5 test, the 918 lap wasn't even ran on the same day, he just made out that it was.

https://www.youtube.com/watch?v=Twz49m_PE2k


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sroser  1y ago

What don't I understand. Heat and 91 octane are a big factor at Laguna Seca too. So how come NA Vipers and C6 Z06s tended to be less affected there than turbo cars?

I understand it, you're just trying to make excuses for inexcusably bad times. If an amateur is running faster times than your 'pro' tests, your times are invalid perior. Or we may as well start using Vision Wells on YouTube for Sonoma times, just because he makes semi-professional looking publications.

This is the problem with the internet age, anyone can post on YouTube. Solomondrin is a nobody, he has zero status or reputation in car testing circles. His times are widely regarded as a joke outside of this forum. He has made numerous negative remarks about both McLaren and Lamborghini, and surprise surprise, all his McLaren and Lamborghini times are crap. E.g. Aventador SV time. 1s slower than a GT3 RS. That's complete bollocks to any reasonable and unbiased person. LT, same time as GT3 RS? Really? Who else managed that?

He's a BS merchant plain and simple.


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saxy  1y ago

You clearly don't understand turbo engines


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sroser  1y ago

Or that super high heat causes certain cars to suffer more.

Cause a Viper with an 8.4L NA V10 to suffer more than highly strung V12s, and turbocharged cars? That's somewhat counter to common understanding don't you think?


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sroser  1y ago

Also he cut off 4.73s from his stock time,so I won't be surprised if it beats 675LT with that much power or be as fast as it.

Don't kid yourself, +50whp does not give you 5s, or anything like it. That time was dropped mostly by practice and tutelege. How can maybe a 0.1-0.2s quarter mile difference amount to 5s on a track that's less than 2 miles long?


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sroser  1y ago

Enough with the super high heat BS. How is it that this only seems to affect Solomondrin and no one else?

And we're not talking small differences, we have inter-car deltas which are 5s off the norm. So, is it just affecting certain cars and not others? Pffft.

We have a non-pro customer in a P1 lapping 5s faster than Solomondrin on Thermal Long. We have a pro in a P1 on Corsas with a passenger lapping 3s faster than Solomondrin managed 1up on Trofeo Rs.

Why are ACRs so slow with him? Surely a huge 8.4 NA V10 should be least affected by heat?


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Good gamer  1y ago

Also he cut off 4.73s from his stock time,so I won't be surprised if it beats 675LT with that much power or be as fast as it.


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Good gamer  1y ago

I don't know if Alexandro publishes fake times or not,I mean why would he?But I think that 570s in this had more amount of lap time and not to mention temperature,air humidity,weather and most importantly driver can affect lap times.

But the above video also shows,how can horsepower help in lap time.


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BR2+  1y ago

@Sroser

.....I'd rather complain?....dude, you made TWO whole articles about complaining.....

And who is this tester which you speak of which his integrity has implications on?..


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saxy  1y ago

Or that super high heat causes certain cars to suffer more.

common sense. All race cars run faster in cooler air. Heat makes turbo cars lose a lot of power. Tires also can overheat too easily.

Tests are on different days, deal with it.


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BR2+  1y ago

For the most part yea, You know as well as I do FL that this site isn't any where near as fun as it used to be, We had twice as many members who actually added to the site, We had ups n downs to, but not like today's level, And you no that's true, Other then yourself I'm the oldest most active member here who has contributed a shite ton to this site, So when I say it's gone down hill you know theres truth to it.

It is a free forum yes, Nothing wrong with that, But these last 2 articles really? The level of moderation is a joke, No Apathy, Or Wads, Georg shows up every couple weeks only If a German car makes a good lap, Eryk? Best not too mention lol The trolls? Should be dealt with immediately and swiftly to prevent future bs, Remember that troll who fkd this site for 2 years straight?

Don't get me wring, I love the site, But with an upgrade it's just that, Not a downgrade, Im definetly not saying its all bad, not at all, Fir the most part im not even saying its bad at all, More simply less great, And I have told you I will help make this site Great again.


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sroser  1y ago

So lafars, why is a 570S on Corsas with the same whp as a stock 675LT (on Trofeo Rs), 2s faster, despite being 112kg heavier and having less downforce, narrower tyres and narrower suspension tract?

Face it, all Solomondrin's times should be deleted, the only decent times on Thermal are this one and the ones ran by Graham Rahal in an NSXs. The rest are just some random Mexican pushing an agenda.


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lafars  1y ago

@sroser right now

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sroser  1y ago

He'd rather complain, because the article has serious implications about integrity of one of his favourite testers.


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FastestLaps  1y ago

You mean my articles today are worse than years ago? How is that possible - I haven't suffered any brain damage or lost my typing skills..

Remember - this is a free forum - you are welcome to write and publish your own stuff, if you think there is nothing worth reading and you can do better.


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BR2+  1y ago

I remember years ago when this site had really amazing articles, Something worth writing and talking about, They lasted weeks if not months with people still talking and debating, Really a shame.