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Thx for the reply to Sebestian's question but for me it will be a piece of mind seeing how the ethanol content can fluctuate between 51%-81% depending on temperatures.
The tricky part is mounting or having it in a convenient spot for refills on the car in question. But if your running E85 all year and every fill up then it becomes a matter of preference.
Thx for the reply to Sebestian's question but for me it will be a piece of mind seeing how the ethanol content can fluctuate between 51%-81% depending on temperatures.
The tricky part is mounting or having it in a convenient spot for refills on the car in question. But if your running E85 all year and every fill up then it becomes a matter of preference.
There is a methanol sensor that's operated off Bluetooth, Meaning you can see the % directly off your smart phone. If you don't want to mess with the interior this is a nice option.
So I've just been out and had a play with dragy, this was my fastest 60-130mph time.
Trying to get a 0-60mph seems hopeless it just lights the wheels up, tcu kicks in shuts throttle off. With it in sport mode it still does the same. With traction off all together it literally smokes the tyres and will not grip. Now these are a brand new set of Pirelli Corsica which I thought would be pretty good.
I think my fastest 1/4mile was 11.86. I'd love to be able to actually get traction I think this thing will be seriously quick.
I'm AWD...I'm really happy with the power through the whole range I just wish I could get it down lol.
I noticed my 60-130 was quick when I looked on the leaderboard. It looked like the quickest stock E63 with just a tune.
Maybe a stupid question but what is the -956ft DA?
Here was the best 1/4mile time.
DA = Density Altitude. Long story short: higher DA = air is less dense = less power, lower DA = air is more dense = more power. The main factors are temperature, atmospheric pressure, and humidity to a much lesser extent. https://en.wikipedia.org/wiki/Density_altitude
Well I thought it was AWD but apparently it's not! Just checked it out and it says the driving axle is RWD.
Sorry guys I honestly had no idea they done a RWD model, that will be why it wants to spin the rear wheels every time.
Tomorrow at the Dyno should be interesting then once it's in Dyno mode and just reading the rear wheels lol
That makes a lot of sense. I see drag radials and a prepped track in your future if you really want to see your times improve.
Maybe when it warms up a little to give your tires a chance to perform will you see better times.
That's all secondary to that 60-130 though. Damn son, your top end is ridiculous!
Brutus_tx, from shown run, has a 60-130 of 8.3s and traps at 127.5
Sebastian_Bird, from shown run, has a 60-130 of 7.3s and traps at 124.5
Both 60-130 & trap speed are commonly used to estimate the effects of racing from a roll, but the results are wildly different. What's going on? I realize Brutus_tx has some better runs later when it was better tuned, where his 60-130 drops to 7.8 and traps at roughly 130, but that has the same issue - a 0.5s slower 60-130 but trapping 5mph higher.
Sebastian car is RWD... mine is AWD. Therein lies the difference i believe.
Trap speeds (and of course 60-130) are largely irrelevant of launch quality though, which is the main benefit with AWD. AWD is expected to have more drivetrain losses, but why then are you trapping higher when he apparently has more power as shown in the 60-130 time?
Could his car have really been spinning for so long that it messed up the 1/4 trap that badly, even on the one which he said was his best 1/4? For example, if he kept going on & off throttle at low speeds, it could chew up part of the 1/4 track without using it for accelerating. This being his best 1/4 though, that doesn't seem likely.
Brutus_tx, from shown run, has a 60-130 of 8.3s and traps at 127.5
Sebastian_Bird, from shown run, has a 60-130 of 7.3s and traps at 124.5
Both 60-130 & trap speed are commonly used to estimate the effects of racing from a roll, but the results are wildly different. What's going on? I realize Brutus_tx has some better runs later when it was better tuned, where his 60-130 drops to 7.8 and traps at roughly 130, but that has the same issue - a 0.5s slower 60-130 but trapping 5mph higher.
You can’t disregard the significantly negative DA. That’s probably worth 2-4 tenths and a few mph in the 1/4mile and will affect 60-130 accordingly.
Last edited by chiromikey; Jan 6, 2020 at 10:27 PM.
Trap speeds (and of course 60-130) are largely irrelevant of launch quality though, which is the main benefit with AWD. AWD is expected to have more drivetrain losses, but why then are you trapping higher when he apparently has more power as shown in the 60-130 time?
Could his car have really been spinning for so long that it messed up the 1/4 trap that badly, even on the one which he said was his best 1/4? For example, if he kept going on & off throttle at low speeds, it could chew up part of the 1/4 track without using it for accelerating. This being his best 1/4 though, that doesn't seem likely.
The car does literally spin in 1st and 2nd I have to feather the throttle to get the power down and it eventually takes off in 3rd. Even from 3rd to 4th it chirps the tyres.
Especially in this weather it is cold just above freezing. It was dark, I have not quite straight roads with slight hills where I can't quite see what's going on. The conditions are terrible to be honest I'm quite surprised at the times I got.
If the weather was hot and I had a decent straight road with no hills I think I could get a really good run. I will keep trying but the roads here aren't ideal. The tarmac can be quite loose sometimes which also doesn't help.
On the 1/4 mile runs I ended up backing off due to corners coming up.
So just came out from the Dyno and I'm blown away with the numbers. Here's the photo he done two run in Dyno mode and came out and couldn't believe the car was just stock hardware with just a tune.
Credit to Jerry at EC!
So I'm making 724rwhp and 725ft lb of torque.
I'm really pleased, now for warm weather and drag radials to really test it out. I've got to wait for about 2-3 months before that's likely to happen though.
Was this on full E85 or still a blend? This may explain the 7.3 60-130.
I'm very happy for you.
I'm glad to see others getting similar results to mine on stock hardware.
This helps validate the tune and eliminates a lot of the guesswork surrounding aftermarket mods. With all my previous testing, I was having a hard time justifying expensive aftermarket hardware to reap performance benefits. Your dyno plot helps solidify my feelings regarding aftermarket mods. If my business model was based on the sale of downpipes I'd be a little worried right now.
Now we get to look into the longevity of the tune, and only time will tell there.
Maybe this is the start of the second wave of tunes for these cars now that the field has matured.
Good lord. For $3k and a flash - zero hardware, you're pushing 725whp.
That is legit insane.
Originally Posted by brutus_tx
Was this on full E85 or still a blend? This may explain the 7.3 60-130.
I'm very happy for you.
I'm glad to see others getting similar results to mine on stock hardware.
This helps validate the tune and eliminates a lot of the guesswork surrounding aftermarket mods. With all my previous testing, I was having a hard time justifying expensive aftermarket hardware to reap performance benefits. Your dyno plot helps solidify my feelings regarding aftermarket mods. If my business model was based on the sale of downpipes I'd be a little worried right now.
Now we get to look into the longevity of the tune, and only time will tell there.
Maybe this is the start of the second wave of tunes for these cars now that the field has matured.
Full E85, I'm really pleased I'm looking forward to summer and sticky tyres!
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