Jump to content
SAU Community

Recommended Posts

Well this friday im going to calder for the 1st time to test my car down the 1/4

Here are my setup:

14psi

Full 3" Straight through exhaust

GCG Highflow turbo

FMIC

Bosch pump

Dunlop sp 9000's 255 rear , 235 front

Rock hard height/dampening adjustable coilovers (dont know wat brand)

and im running a chipped ecu at 14psi, not sure what rwkw it has.

My problem is, on stock boost i can launch fine and quick with only "axle tramp" feels like its bunny hopping in 2nd then i regain traction,

Once i boosted it to 14psi i try to launch, pop the clutch at 3000rpm 1st gear is all wheel spin, 2nd gear is all wheel spin, 1/2 of 3rd gear is all wheel spin.

I realise now i have to slip my clutch till i feel complete traction, however im not sure what the correct launching RPM is. Is their anyway i can pop the clutch and still gain traction?

On a closed road at my farm i dragged my workmates stock wrx. He blew me away at the start as i was wheel spinning till i hit 3rd, then i caught up neck and neck just before the 1/4 ended, i cant do this at calder...any advice? Is my suspension too hard? Or should i simply slip the clutch ... its too hard to practice by myself as i cant test against another car and im back in the city.

Oh and when i did a granny launch like a normal start, he still; blew me away at the start and then in 2nd i was axle tramping again! like bunny hopping/wheel spinning...i cant stop it, 3rd gear is my strongest gear as i get full traction and the 14psi makes up for my lost wheel spinning time...but by then the 1/4 is over

Any advice would be much appreciated, so i can prepare for friday night :):)

Link to comment
https://www.sau.com.au/forums/topic/62462-1st-drag-this-friday-help/
Share on other sites

Ide say alot of its your suspension/camber settings

get these in order and youll be able to put all the power to the ground

also, running a gcg hiflow at 1bar will be somewhere around 240rwkw, have u still got standard injectors? and if you havent got any dyno tuning done then your dis-advantaging yourself

Cheers for the replies, drag radials? i can get my hands on a set of mickey thompsons, well the guy at work said his mate runs a tyre business and hell lend me mickey thompsons, ive never heard of them in my life? are they drag radials?

I have also ordered a set of pineapples to be installed on friday, as i read in previous threads they reduce axel tramp

I still have standard injectors, and i did have a dyno tune when i had the stock fuel pump and the tuner entered in values for my High setting and Low setting but said he couldnt continue cause my stock fuel pump was weak and dying,

when i got my bosch fuel pump installed i ran the high setting and boost holds at 14.7 Psi or just under? It doesnt feel laggy and the spool is mega loud...am i running too much psi? i go through a whole tank of fuel in no time...its ****ed :)

I had severe axel tramp the same as what you are talking about.

I got some alloy rear subframe bushes (metal versions of the poly pineapples from whiteline) and it was a WORLD of difference. For ~$100 you will be very surprised the difference that they will make, especially for launching.

I installed them myself, all you need is a jack etc. and around an hour - there are HOWTO's on the web and other places.

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


  • Similar Content

  • Latest Posts

    • Haha, i kow right? Could have bought so many cars for the same amount of money (or less) but driving Unicorn gives you at least +1mln to style 😅. Like wise man said "life's to short to drink cheap wine and drive boring cars" 😉
    • Newbie here, proud owner of an Autech 260RS. I'm on the hunt for wiring diagrams specific to the 260RS, particularly S1. I've ran my eyes through R33, R34 Diagrams, there are some similarities, however continue to find incorrect wire colours and pins on connectors in the 33,34 diagrams.   I was hoping someone could point me in the right direction? I'd be happy to pay for the originals in Japanese. I can translate them, at least they would be accurate.   Any help please would be greatly appreciated, never heard an RB26DETT before let alone driven one, and I've got a spaghetti monster of goodness to sort out.   Cheers Benny  
    • Hey all  im wondering if you can help me please I have put a rb20 box in my r34 gtt as my auto packed up and a friend had a spare box I know it’s not ideal but it will get me up and running for now. we have done the conversation and everything is working great but my Speedo we got a s13 speed sensor but my Speedo reads double now and I bought a speed converter but still not having any luck.  so I thought I’ll reach out and pick your brains  any help would be appreciated please as I wanna drive my car again 
    • Drain it. I got official Matic D but you can get whatever is listed as Matic D compatible.
    • Thanks guys,  Yeah I should at least have them dynoed, at least then I know what I've got as a starting point.  The springs on these are hard as rocks. I vaguely remember Russman saying he was going to sell the shocks to me with the rocks fitted, as he was keeping the softer springs for his new setup.  I didn't click at the time but of course that was to let me know the shock/spring wouldn't be matched.  I also remember pricing up new springs around 2014-15, but, house, money etc. it never happened. So that was another reason to have them rebuilt. I have rebuilt the forks on many motorcycles so I think I could handle the seals on these easily enough, but getting the valving right would be a rabbit hole I cbf exploring.  Duncan, interesting to hear RP was tuning these back then. I might give them a call.  In the mean time I have been busy fitting sway bars. The Whiteline rear sway bar I purchased 15 years ago finally got fitted, along with the Whiteline front bar that showed up last week. Just waiting on new links for the front sway bar to finish that off.  And my spare set of advan AVS VS5's should be back from the powder coaters in a Pearl White finish sometime this week, with a set of Hankook RS4's lined up for fitting.  And then I just have all the suspension bushes to do. A comprehensive kit is on the way... Lots to do before the Ararat hill climb. Cheers guys 🍻   
×
×
  • Create New...