Jump to content
SAU Community

Back to the drawing board!

macka

By macka,
in Western Australia

 Share

Recommended Posts

macka Veteran

macka

Posted
  • Author
Posted

I dont disagree on anything for a change ;) maybe soimethings wrong with me hehe

Dr D. The Top secret rom has to go....

When i ran 20 degrees i got 30hp more midrange wow! @12psi

Back to 15deg and i can run more boost but only 8hp more top end but lose driveability mid range!

Adam My turbo specs do match my graph thats ok im happy with that...im not particularly interested in a vertical dyno chart like um.. :) ps 4500rpm

Rob i guess u have to like a dyno and stick with it so u can monitor inprovements..It is all in all only a tool for development :) But however what im saying is that i got a minimal increase by doing certain things and went back to the same dyno!

Thanks steve i didnt think so either but wanted some feedback just incase i thought i was greedy..

cheers

mac

  • Replies 104
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

Popular Days

Gradenko Mentor

Gradenko

Posted
Posted
Originally posted by macka

Dr D. The Top secret rom has to go....

Maybe sell it for cash+swap for standard ecu? The top secret rom would be a good upgrade for someone who couldn't afford a s-afc but wanted to get rid of the standard ecu timing problems.

BTW, you're not greedy for wanting more power. It happens, even to the best of us :)

RadiuM Experienced

RadiuM

Posted
Posted

awesome.. my mates R33 has one also.. never seen another around like it, diff cooler, the lot. :-)

apparently another mate read somewhere that they only made 100 or so of these from the factory.. nice little score! :(

Shaun

Originally posted by GTS-t VSPEC

I guess I should expect this, I've already answered others on the forum. Probably should change my user name.

My R33 GTS-t has a VSPEC diff, yes it does have the fins on the diff like the VSPEC's. That means that I have the benefit of both traction control and Active LSD. It came from the factory with this so I presume there aren't too many of them around.  

The Active LSD is really cool for high speed cornering, causing the back-end to quickly turn in so you can keep the power down.

See'ya

:burnout:

macka Veteran

macka

Posted
  • Author
Posted
Originally posted by Gradenko

Maybe sell it for cash+swap for standard ecu? The top secret rom would be a good upgrade for someone who couldn't afford a s-afc but wanted to get rid of the standard ecu timing problems.

BTW, you're not greedy for wanting more power. It happens, even to the best of us :(

Your right the Rom is a good upgrade for some people as i did lose power installing the standard one back in for a check, its just a matter of getting another standard unit now...

puckish Rising Star

puckish

Posted
Posted

Macka are you running the stock turbo? If so I would have thought the thing woulda run outta puff at higher boost levels.

What does the dyno map do above 3500 RPM? Does it skyrocket or mystriously level off at some rev point?

What are the injectors doing (i.e duty cycle?) Fuel pressure? Is the pump suppling enough fuel? Fuel air mixtures may be deceiving. If for example the engine isn't keeping enough fuel in the combustion chamber the exhaust output appears rich.

Just some thoughts ......

macka Veteran

macka

Posted
  • Author
Posted

Thanks for your interest Puckish

Look to the left at my avatar , that snail lives in my car!!

I have a large front mount and 550hp fuel pump

Injectors have a bit of headroom but i havent checked airflow % yet as i forgot...duh!

Gonna try at the drags tonight i have a special pair of slicks now curtesy of GTS-t VSPEC :lol:

GTS-t VSPEC Grand Master

GTS-t VSPEC

Posted
Posted

It was an impressive run Macka, well done. I'm glad those racing slicks I gave you did the job, maybe I can line something better up for you next time. 12.98 will take some catching by the rest of us, but I'm prepared to bide my time until the bigger turbo is on.

Well done again, and nice to actually meet you.

See'ya:burnout:

PS: I'm not too impressd witht the 265's I put on, I still get shitloads of wheel-spin, maybe able to get some Potenza's for the drags, that should provide more grip.

macka Veteran

macka

Posted
  • Author
Posted

Thanks...

how bout them bald Tyres. ey..

That was a freaky time ey...shocked me but she ran beautiful on 1Bar

Maybe the track was prepped better i managed a 2.254 60ft this time..

I thought id teach a V8 torry a lesson but he creamed me with a 12.5 hehe oh well

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
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • MBS206
      RB25DE NEO with Haltech ECU

      By MBS206 · Posted

      You very likely need to get it on a dyno and tune it. My assumption is, you've got an RB25DET tune in it, which has a different manifold, different injectors, and different cams as a minimum. What O2 sensor are you running?   When you say it runs extremely rich from idle all the way to redline, is this just free revving it you see that?
    • Haggerty
      RB25DE NEO with Haltech ECU

      By Haggerty · Posted

      I seem to the be only person that is using a Haltech 2500 on an NA motor, I've installed a Bosch DBW throttle body to the OEM intake manifold and am having problems maintaining AFR even with the wideband o2.  It will run extremely rich at idle and up to redline, but under load it will go extremely lean in the 20s and i'm essentially having to rev it over 4k and feather the clutch to get it up to speed.  I've read a few other threads of about the butterfly, it seems removing the vacuum to it is supposed to have it remain open, i've noticed no difference under 4k with the vacuum line to it plugged.  I'm hoping someone here has had luck using the NA manifold with Haltech, and if they happen to have a tune for it.  
    • sonicii
      Could it really happen......

      By sonicii · Posted

      I don't know any details, but I really wouldn't be surprised if they do it as a LHD only version, at least initially.
    • Gareth87
      What should I do next to hold the head on

      By Gareth87 · Posted

      Thanks for the replies everyone. Definitely a coolant push. Oil catch can is empty and always has been. As the engine is out now I'll be having a good look over things. I do have some detonation on the piston tops from a trigger issue back about 5 years ago. I felt it and shut off then bought a new ecu and changed the trigger. Never been an issue since. It never hurt the power, its made almost 80hp more since that incident but I will pull the bearing caps to take a look. If the bearings are damaged I will do a bottom end refresh. Head is being re conditioned at the moment and the block will be cleaned and checked to ensure it's flat. I'll go with a kameari gasket and see how it ends up. The other thing I'm not super keen on is the cylinder colours. I suspect this is from the inlet manifold. The plan will be to put it back together, retune and then stick a plazmaman billet inlet on it and retune. I'm happy with the power, if it makes a little more, then great, but I would rather just make everything more efficient at this stage.
    • MBS206
      Could it really happen......

      By MBS206 · Posted

      Maybe they'll look to do a bunch of presales to help inject some cash fast for their financial issues...
×
×
  • Create New...