T(h)or's GT86 hammer (Europe) - essential track setup

[Tor]

Originally Posted by Wayno

So, what the hell, 3% difference over a week?

+1.2
http://datazap.me/u/tor/tor-106?log=...zoom=1072-1394
- 2.1
http://datazap.me/u/tor/tor-106-0?lo...4&zoom=493-835

I still reckon the AU.Rich scale will give more consistent trims, being that it's way less lumpy compared to the openflash scale.

Yes, I wanted to post that but didn't get around to it yet. I was working like a mad man the last 5 days. Thanks for taking a look.

Could the swings be weather related too? We had crazy temperature swings over the last week. From 35 deg c to 12 c.

As it leans out with -2.1, I seem to consistently get some slight FLKC at 7100 rpm too. I have to leave it like that for now, as I have so many things to do this month. Move among other things.

This will be the new home for my GT86:


(Big garage for European standards! )

So once I have moved, depending on time, I might go ahead with the cat removal. If I am lacking the time, I will try the ROM you posted.

[Wayno]

LTFT should move around, but AFR should remain the same. It's not doing that though.

[nikitopo]

Originally Posted by Tor

So once I have moved, depending on time, I might go ahead with the cat removal.

Are you planning to have it only for the track? You'll get in huge trouble if you remove the cat and get caught. Better to rape a child, than to remove the cat in Germany! It is that bad!

[Tor]

"Are you calling me on a cellular phone? Prank call! prank call!"

[Vin]

Originally Posted by nikitopo

Are you planning to have it only for the track? You'll get in huge trouble if you remove the cat and get caught. Better to rape a child, than to remove the cat in Germany! It is that bad!

I'm really surprised with this TÜV situation in Germany. In the Netherlands we can do pretty much everything to our cars without having to visit the 'TÜV', we only need one race cat to pass emissions, a lot of guys just fit a cat to pass testing and drive the rest of the year without it, no issues whatsoever. You guys should move here Also brings much more 86s in the Netherlands

[nikitopo]

a lot of guys just fit a cat to pass testing and drive the rest of the year without it, no issues whatsoever.

A friend here was caught without cat and he had big trouble. It was not in the TÜV test, but on an ordinary check by police. Yes the situation is really bad.

[Tor]

Originally Posted by nikitopo

A friend here was caught without cat and he had big trouble. It was not in the TÜV test, but on an ordinary check by police. Yes the situation is really bad.

It sounds like he didn't just remove the cat, but put in another header. Otherwise, how would they have noticed at an ordinary police check?

Hypothetically, if someone at an undisclosed location in Europe, was to remove the cat from inside the stock header with a hammer and chisel, leaving the header looking completely stock on the outside - how would anyone ever notice?

Also, when the engine is warm the emission would be okay and shouldn't pose a problem with TÜV. The only thing is "P0420 cat efficiency below threshold" error code.

Said person would, of course, have to look into how long it is possible to drive the car without getting a CEL (i.e. to TÜV), or how visible an O2 spacer is looking down on the header in the engine compartment. Or said person would need to acquire a spare header and replace it every 2 years when the car needs TÜV.

If said person was indeed (unlikely) caught, he could always claim to have no knowledge about the whereabouts of the cat. Who is going to prove exactly who removed the cat? Maybe it was the previous owner? Maybe they forget to install it at the factory? Maybe it blew to pieces and flew out the exhaust pipe? Of course, it is more plausible to make such claims without an O2 spacer. So if someone was to endeavor into to such reckless crimes it might be the best option to have 2 headers and deactivate P0420 when driving the modified one.

Besides from a (let's face it) rather negligible power gain (in the big scale of things), another purpose of removing the header would be to reduce heat in the engine compartment.

[nikitopo]

If you want to be faster, then you can check using a lightweight pulley kit. I installed some days ago the TODA kit and the results are very good. The feeling when accelerating in 1st-3rd gears is like having a much lighter car. Even if some say that I had a placebo effect, I am not sure how they can justify that I am going now faster than an Audi S3 (1st generation).

[ysu]

Besides from a (let's face it) rather negligible power gain (in the big scale of things), another purpose of removing the header would be to reduce heat in the engine compartment.

I'm not sure why you think the gain is negligible. I can assure you it's anything but. Don't just consider the top gain, consider it all across the range, especially with the torque dip gone.

It's so prominent, that my friend said "wow" when he drove my car after the header install & tune. I said the same, btw, but I don't count as it's my car.

[Tor]

Originally Posted by ysu

I'm not sure why you think the gain is negligible. I can assure you it's anything but. Don't just consider the top gain, consider it all across the range, especially with the torque dip gone.

It's so prominent, that my friend said "wow" when he drove my car after the header install & tune. I said the same, btw, but I don't count as it's my car.

I believe you that it changes the feeling of the car. But still, I believe the gain is negligible in terms of performance figures. Especially on the track where the rpm are always high. I doubt it would make any real measurable difference in track times.

I'm convinced though that it would make a measurable difference in engine bay temperatures.

I could be wrong on both.

[ysu]

Originally Posted by Tor

I believe you that it changes the feeling of the car. But still, I believe the gain is negligible in terms of performance figures. Especially on the track where the rpm are always high. I doubt it would make any real measurable difference in track times.

I'm convinced though that it would make a measurable difference in engine bay temperatures.

I could be wrong on both.

I'd be really surprised if you could not detect a difference in laptimes. You're not always out of the torque dip on a track. Well, I certainly wasn't with the A/T car. The oil temps are comparable - within a few degrees, so there's no real measurable change there for me.

Sadly I do not have identical condition laptimes, because I've changed tyres, header & tune since my last lap at Wakefield Park - and I got a bit better I hope, too. Anyway, mid 1:16 the first visit (stock car) and 1:12.75 yesterday.

0-100 times have improved by ~0.6s, but I only had some measurements with an android app (with obd, but still, it's not 100% accurate I guess).

I'll probably have some quarter mile times as well in a while - but I need to wait for my mate to do something on his car so we can go and test both cars

[nikitopo]

A gain of 10-12whp is because of the tune. The rest is because of the header. You should compare gains between a tuned car w/o header and a tuned car with header.

[ysu]

Originally Posted by nikitopo

A gain of 10-12whp is because of the tune. The rest is because of the header. You should compare gains between a tuned car w/o header and a tuned car with header.

Exactly what I mean I've no "identical condition" measurements - add the nittos to the mix and you've a real mess.

Well, Tor could do this sort of testing for us, he just needs a header

[Tor]

Over the weekend I took a break from moving and went to Subaru Drivers Club Germany's annual meet (Subaru Club, not BRZ). As a GT86, I was very grateful to get an invitation. If anyone from SDC should be reading, a big thank you here as well!!

The driving part of the event took place at Racepark Meppen, a brand new racetrack opened in July. It has a really fantastic ambience being located at an old closed down power plant. And the track is fantastic! It's like made for the FT86. See for yourself:

A short video with my fastest lap. Before going, I checked youtube for videos to see what to expect and learn the track a bit. I found a video of an BMW E46 M3 which lapped in around 1:25. So that was the benchmark for the day. I was quite surprised that that time was easy to match and beat even:

[ame="https://www.youtube.com/watch?v=7fJFfeIuM_I"]Best lap Racepark Meppen with GT86, 1:22 - YouTube[/ame]


It was open pitlane the whole day, and I got more than 50 laps I think. I'm not sure exactly since Harry's lap timer was acting up. The last few laps of the day it started to rain and that was a great experience too. It was real educational to feel the track getting progressively more wet.

[ame="https://www.youtube.com/watch?v=396dm1uUTtw"]Racepark Meppen (left-foot braking paradise) dry, damp and wet - YouTube[/ame]


I left the scientifically stuff aside and just focused on driving ( @nikitopo ). I set my tire pressure once to 2.10 in the front and 2.15 in the back (as I learned worked on NBR GP circuit) and didn't even bother to check the rest of the day (no temperature data either). And the car just ran great!!

Only "science" was doing 2 datalogs. I had to fuel 98 octane as I couldn't get anything else there. And it would seem I am running way too conservative timing.

100 octane:


98 octane (raining, lower rpm with more load):


http://datazap.me/u/tor/track-logs

Next flash will be the 102 octane tune. I am several revisions behind.