Jump to content
SAU Community

Recommended Posts

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 

Link to comment
https://www.sau.com.au/forums/topic/480294-dragy-va-vbox/
Share on other sites

"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? 

 

 

Link to comment
https://www.sau.com.au/forums/topic/480294-dragy-va-vbox/#findComment-7930164
Share on other sites

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

Link to comment
https://www.sau.com.au/forums/topic/480294-dragy-va-vbox/#findComment-7930182
Share on other sites

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.

Link to comment
https://www.sau.com.au/forums/topic/480294-dragy-va-vbox/#findComment-7930188
Share on other sites

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.

Link to comment
https://www.sau.com.au/forums/topic/480294-dragy-va-vbox/#findComment-7930189
Share on other sites

  • 2 weeks later...
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

Link to comment
https://www.sau.com.au/forums/topic/480294-dragy-va-vbox/#findComment-7930874
Share on other sites

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 by drifter17a
Link to comment
https://www.sau.com.au/forums/topic/480294-dragy-va-vbox/#findComment-7931190
Share on other sites

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. 

Screenshot_20200524-232217_dragy.jpg

  • Like 1
Link to comment
https://www.sau.com.au/forums/topic/480294-dragy-va-vbox/#findComment-7931591
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Latest Posts

    • Updating results following our SR20det project. Data collected form improves future turbocharger making and high flowing services. So far differences between G and GT series turbine wheels, we are in the process of making a new turbine, the aim is for better mid top range flow without gain too much lag.  Result is back to back comparison of G25-660 and GTX2867 spec turbochargers on the same car, nothing changed apart from turbocharger. Both tuned to knock limit from pump 98 fuel (US Ron93). GTX2867 was about 400RPM more responsive making 255rwkws while G25-660 made 17 extra Kws with wider spread of torque after 4500RPM finishing off at 272rwkws.  
    • @GTSBoy i tried to jumper the wires and got the steering wheel light to come on which is right under the gear indication but that still doesnt come on.  Can it be an issue with my cluster?
    • Given that you have seen the dash indicator work briefly, then it would seem like you have a simple wiring problem. What happens when you simply jumper the wires on the "steering wheel switch"?
    • Yesterday's day in review: All the wiring to the lights up the front how I want it, is ran, terminated, and all to length. The only lighting up front I haven't finished is the side indicators, as I need to get to the partly cutup factory loom, and find the plugs for them. Interesting note, the side indicators use the exact same plug that's in the doors for something else that I don't remember what it is... So that plug better be careful...   Power steering solenoid, on the R33 is variable, and from memory PWM. The Ford's control from the docs I have so far, is it's just a on or off control. So I'm not sure it's what I want, and in any case, power steering running, but at its heaviest (solenoid off) is likely what I'll want anyway, so I'm not yet touching it at all. All the wiring I can complete so far, is done. There are 3 wires I need to make a plug for at the ECU, and these are just for the vehicle speed sensor, of which I need to get a T5 from an AU, so I can use its output that has the speed sensor on it. (My car doesn't have ABS, otherwise I'd set it up to use one of the ring gears on that). I need to buy new headlight globes and front parker globes, otherwise I could show photos of lights working. Current fuel lines in and out on this motor are "5/16". I'll order hardline, and some AN fittings for that, and I just need to 100% check fuel line size at the tank end, to get the ends for it. I'm also looking at a few options for the banjo bolts to AN fittings for the power steering rack. I'll pull the reservoir off the Barras PS pump. There's an off the shelf fitting for that pump for a -10 AN feed, and it'll use a 16mm to dash -6 an outlet to feed the rack. I'll be making my own power steering reservoir, I'm going through the thought process at the moment of how I'll run the baffles, and I need to research another idea for it too.
    • Two inlet runners changes the engines characteristics requiring less fuel to make torque at different points in the rev range. The smaller diameter inlet runners on the DET increases air flow speed, which improves atomisation of fuel, particularly in low load/idle for better burn, and in specific areas of the engine, (areas you would use when driving normally) increases the efficiency. All of those items change how efficient the engine is at different speeds. The changes on the neo help slightly to improve emissions where it matters. The overall improvements won't be the likes of going from an engine built in the 70s to an engine built in the 2000s, it's just a small step. But still leaves it the RB with the best chance of improvement.   As for your comment about the whole using a cat to not need to worry about those gases. Two things, no system is 100% perfect. It won't eliminate everything. So reduce the quantity you put into it, you still reduce the output. Two, make that system do less work, and it's likely to survive a little bit longer. Funnily enough to, one trick employed to get cats up to temp, AND to drastically reduce emissions before they get up to temp, is to reduce ignition timing.
×
×
  • Create New...