Drag/Acceleration Kia Stinger 1/4 Mile Times

[brancky3]

Why Brancky? Do you enjoy getting beat any day of the week ? That's what a higher trap speed will do for ya every day of the week...and twice on Sunday over a lower ET ......and what about zero to 60 times...you don't care bout those? Et's get you the win ,and the trophy....the high trap speed gets you a cookie Wash

Barely anyone races from a stop, it's always from a roll. If you take the launch out of the equation a higher trap speed car will win every time.

 

[Ritz]

Barely anyone races from a stop, it's always from a roll. If you take the launch out of the equation a higher trap speed car will win every time.

Though to be fair, the top numbers here from the "contestants" are all close enough that it would really be a driver's race at this juncture.

Cheers!

 

[Kamauxx]

Barely anyone races from a stop, it's always from a roll. If you take the launch out of the equation a higher trap speed car will win every time.

I don't think you all are having the same conversation.

Wash and Tork are discussing 1/4 mile times -(which is what this thread is about) you're talking about street racing.

 

[brancky3]

I don't think you all are having the same conversation.

Wash and Tork are discussing 1/4 mile times -(which is what this thread is about) you're talking about street racing.

lol I know, but trap speed is part of the 1/4 mile time afterall. I'm super excited to see mid 11s and 120+ trap speeds on this platform

 

[Tonkabob]

Why Brancky? Do you enjoy getting beat any day of the week ? That's what a higher trap speed will do for ya every day of the week...and twice on Sunday over a lower ET ......and what about zero to 60 times...you don't care bout those? Et's get you the win ,and the trophy....the high trap speed gets you a cookie Wash

Brancky got 3 agrees and a like so several people prefer to lose races and go home early.

 

[brancky3]

Brancky got 3 agrees and a like so several people prefer to lose races and go home early.

A higher trap speed car wins. If you line up a 12.1@119mph car and a 11.9@117mph car from a 40 roll, the 119mph car will win 99% of the time. I've never ever raced anyone from a dead stop over 1/4 mile, aside from the track (and even then I've never done bracket racing so it doesn't really count)

 

[Tonkabob]

A higher trap speed car wins. If you line up a 12.1@119mph car and a 11.9@117mph car from a 40 roll, the 119mph car will win 99% of the time. I've never ever raced anyone from a dead stop over 1/4 mile, aside from the track (and even then I've never done bracket racing so it doesn't really count)

How fast do you go in your 40 roll races? If you look at the graph, id beat Terry in a 40 roll race to 100, 115 and maybe to 120. He'd beat me in a 90 roll race.
(60 foot mark is just under 40 mph)

 

[Jwolf]

Well, did I mention that we have new info on the ECU?

Here is one map that has been a curse for a while now. I have to test it to verify, but... LC should now give us full throttle by any KPH that we set it to. This is just one little thing that will get that 60 ft time down, and drop the 0 to 60 MPH time also.

That's great! Now you just have to figure out if it'll read wheel spin as that KPH or if it's smart enough to know the wheels are spinning. Otherwise it might just get worse

 

[Terry@BMS]

The higher trap just shows you're making more power to weight, generally. So you have the potential for a quicker ET with sufficient traction. Lately we've been doing a lot of half mile airport runway events. They've become very popular and are effectively trap speed races. We had the only Kia at both Shift Sector and at NoFlyZone last month, some people took notice of how well it did considering their perception of the brand.

 

[Doel]

I don't think you all are having the same conversation.

Wash and Tork are discussing 1/4 mile times -(which is what this thread is about) you're talking about street racing.

where do you think these guys are running their draggys? At a drag strip? lol

 

[Kamauxx]

where do you think these guys are running their draggys? At a drag strip? lol

Still, they're talking about 1/4 mile times.

 

[Sales@Tork]

That's great! Now you just have to figure out if it'll read wheel spin as that KPH or if it's smart enough to know the wheels are spinning. Otherwise it might just get worse

There is an averaging calculation inside the ECU for front rear bias (wheel speed sensors) to monitor actual speed. There are also "wheel slip thresholds" and electronic traction controls for traction control on and off. If I wanted, I could set the wheel slip threshold to 20% inside the ECU when you have traction control on, and completly disable all traction aids when you turn it off.

I never mess with these values for legal reason, but this give you an idea of how much control the ECU has.

 

[Sales@Tork]

So, I mentioned how much speed you pick up in the back 1/2 of the quarter mile and that seems to have missed the group, or people didn't understand what that meant.

The best way to measure how hard a car is accelerating is to check the MPH gain from the 1/8 mile to the end of the 1/4 mile. This shows how "fast" a car is moving. Sixty foot times are more important, but after you get those sorted, you want to start working on the back half gains.

The higher the MPH gain between those two points, shows just how well a tune is working.

 

[Sales@Tork]

The higher trap just shows you're making more power to weight, generally. So you have the potential for a quicker ET with sufficient traction. Lately we've been doing a lot of half mile airport runway events. They've become very popular and are effectively trap speed races. We had the only Kia at both Shift Sector and at NoFlyZone last month, some people took notice of how well it did considering their perception of the brand.

I am looking at all the 1/2 mile events for next year and going to try and make a few. With 8 gears and the slippery body style, why not

 

[Angel]

There is an averaging calculation inside the ECU for front rear bias (wheel speed sensors) to monitor actual speed. There are also "wheel slip thresholds" and electronic traction controls for traction control on and off. If I wanted, I could set the wheel slip threshold to 20% inside the ECU when you have traction control on, and completly disable all traction aids when you turn it off.

I never mess with these values for legal reason, but this give you an idea of how much control the ECU has.

Any updates or progress on like being able to tune the shift points etc....? how about launch control like setting it at higher rpm for a better launch?

 

[Sales@Tork]

Any updates or progress on like being able to tune the shift points etc....? how about launch control like setting it at higher rpm for a better launch?

We have already addressed torque management for shifts. We are looking at higher RPM limits for LC, but... we have got to be very careful with this. To much RPM and it will destroy the torque converter.

 

[Angel]

We have already addressed torque management for shifts. We are looking at higher RPM limits for LC, but... we have got to be very careful with this. To much RPM and it will destroy the torque converter.

I follow but i feel that the launch is extremely safe at 2k rpm maybe 2500-3000 rpm would be great .... keep us updated on the LC progress ....

 

[Tonkabob]

We have already addressed torque management for shifts. We are looking at higher RPM limits for LC, but... we have got to be very careful with this. To much RPM and it will destroy the torque converter.

The advantage in shifting is what i was trying to show in my charts yesterday. You can also see it in the data logs with no throttle cut and less timing advance / boost drop.
Getting full throttle before 10 mph may be more interesting than rpm increase and not as hard on the torque converter.

My car already launches at 2450 per the logs but tach looks closer to 2250.

 

[KLR STINGER]

The advantage in shifting is what i was trying to show in my charts yesterday. You can also see it in the data logs with no throttle cut and less timing advance / boost drop.
Getting full throttle before 10 mph may be more interesting than rpm increase and not as hard on the torque converter.

My car already launches at 2450 per the logs but tach looks closer to 2250.

Bob did you post your data log with TPS? And agreed. Full throttle on the hit would do all we need to pull a decent 60'. You can't launch a Torque converter car any haigher than its hydro-mechanical flash stall allows. IT's not wet clutch trans. We are not going to get Higher RPM launch than TC allows.

 

[Tonkabob]

So, I mentioned how much speed you pick up in the back 1/2 of the quarter mile and that seems to have missed the group, or people didn't understand what that meant.

The best way to measure how hard a car is accelerating is to check the MPH gain from the 1/8 mile to the end of the 1/4 mile. This shows how "fast" a car is moving. Sixty foot times are more important, but after you get those sorted, you want to start working on the back half gains.

The higher the MPH gain between those two points, shows just how well a tune is working.

The added complexity though is that 1/8th mile to 1/4 mile is 80% a 4th gear pull and some people are giving up power and time on the 1-2, 2-3, 3-4 shifts. (Which seems unique to this cars ecu nannys) Second half is good for the HP part of the tune. Looking from 60 foot should negate the launch but still cover all the shifts.