Dragy va vbox

[drifter17a]

All,

 

just bought a dragy and i have to say it is brilliant .

it connects to phone and does gps refresh every .100 sec and quite accurate

 

running on low boost with falken tyre i get a 0-60 of 4.6 sec but if I practice more I think i can get it down to 4 as it doesn’tgrip

 

do you guys shift into 2nd as soon as it is rolling to get fast 0-60 ? If i leave in first then 0-60 is around 5.5 

 

i stick it to 2nd as soon as I have wheel spin and it bounces from red line and then get mid 4

 

on high boost which I haven’t tried (500bhp) i reckon it will be 3.8 if i can get power down

 

on low boost it is 430 bhp 

[Murray_Calavera]

What is your gate spring pressure? 

Maybe try playing with boost by gear and pulling boost out of first gear to help you with traction. 

What ECU do you have, do you have traction control? 

[drifter17a]

Link ecu and think it is 1.2 bar 

 

no traction control configured/ setup 

[Murray_Calavera]

Your base spring pressure is 1.2 bar? What is your max boost?

What type of Link ECU do you have? 

[drifter17a]

Link g4 and it controls boost

[Murray_Calavera]

"G4" doesn't give us enough info, there are G4 Fury, G4 Xtreme, G4 Thunder... etc

I'm trying to work out what is your base spring pressure and max boost pressure and if your ECU has traction control functionality. 

If you turn boost control off, how much boost does your turbo make? 

 

 

[drifter17a]

It runs at  1 bar spring apology not 1.2

 

ecu is link plug in, see link below

 

https://h-dev.co.uk/product/r34-gtt-rb25det-neo-link-g4-ecu/
 

my tuner at time said it needed some work for traction so we disabled it all together and there is no traction

 

low boost is 1.1 bar and high boost is 1.3 which is changed by a switch

[Murray_Calavera]

Yeah ok, you don't have much flexibility with such a high base spring pressure. Boost by gear won't really help with that

What do you need to do to get the traction control up and running? 

[drifter17a]

How do you guys get grip when accelerating?

 

shift to gear up at expense of less power initially but grip?

[KiwiRS4T]

2 minutes ago, drifter17a said:

How do you guys get grip when accelerating?

 

shift to gear up at expense of less power initially but grip?

Your computer can set lower boost levels in the lower gears.

Different suspension set ups.

Drag friendly tyres.

[Murray_Calavera]

12 minutes ago, drifter17a said:

How do you guys get grip when accelerating?

 

shift to gear up at expense of less power initially but grip?

You could lower your base spring pressure to say, 0.5 bar and then use a 4 port mac valve and run a very progressive boost by gear. 

You could setup your traction control. You haven't said why it doesn't work, I'm guessing you need a non-powered wheel speed sensor. 

Stickier tyres as mentioned above. 

Actually I think this has all been said before, this thread and your recent tyre thread.

[GTSBoy]

10 hours ago, drifter17a said:

How do you guys get grip when accelerating?

You do know that you don't have to mat the throttle, right?

[drifter17a]

On 04/05/2020 at 11:34 PM, GTSBoy said:

You do know that you don't have to mat the throttle, right?

Yep and that is not with flooring it

 

0-60 is around 5 sec at best 

got pair of michellen sport 4s so will report back if it got any lower

[Murray_Calavera]

42 minutes ago, drifter17a said:

Yep and that is not with flooring it

 

0-60 is around 5 sec at best 

got pair of michellen sport 4s so will report back if it got any lower

Let us know what tyre size your running when you report back

[drifter17a]

275/30/19 pilot sport 4s rear

 

245/40/18 pilot sport 4 front

[DaymoR32]

how come you are running 19's on the rear and 18's on the front?

[drifter17a]

Different alloys at front that is all

[Ben C34]

1 hour ago, drifter17a said:

Different alloys at front that is all

Just larger diameter rear rims that’s all, like that’s normal.......

[drifter17a]

So tyre made a massive difference 

 

pilot 4s rear 275

 

front is pilot 4 which doesn’t really matter for acceleration. 0-60 went from 5.3 to 4.8 a wopping 0.5 sec !!!!

 

it sticks like a glue, i can’t even spin wheel on first or hardly it does. It used to spin like hell on first and second on shitty falken 

Edited May 18, 2020 by drifter17a

[klutched]

Dragy is awesome! We use one in my car at roll racing to see if the changes are working. Fastest 100-200 is currently 4.11s, with the old turbo. New one I've done a 4.25 on 30psi in the middle of summer. Should go mid 3s now we've got it turned up if we can get it to hook up.