Jump to content
SAU Community

Recommended Posts

320rwkw will not get a 10.8 sec pass in a GTR. Dreaming.

Anyway this is the 400rwkw thread, not the Cloud9 thread.

So tell me what MPH is required to crack a 10 pass? I guess rob @ rips racing who holds the world record with his rb doesn't know what he is talking about lol. Hopefully you can prove him wrong...good luck with that 1 ash!

I don't understand how 300rwkw GTR's run 118-120mph but somehow you get an extra 8-10mph from 20rwkw either :rolleyes:

I bring this down to good driving. No pussy footing, launch off the limiter. I uploaded my results a few years back in the drag section and it formed a good discussion which was not questioned once. And now, here we are.

Mico and the rest of the guys in this thread, apologies once again.

Pierburg, alright, any other suggestions !

Yep.

Stop being pussies and do it right. Surge tank with a big single or twin smaller pumps with check valves.

Problem solved, never have to think about it again. Move onto the next weak link!

Nothing at all I just don't want the hassle of setting up all the lines and or fabricating it when I could just have a single pump intank that uses the standard lines.

I have a Nismo pump at the moment.

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

    • @Haggerty this is your red flag. In MAP based ECU's the Manifold pressure X RPM calculation is how the engine knows it is actually...running/going through ANY load. You are confusing the term 'base map' with your base VE/Fuel table. When most people say 'base map' they mean the stock entire tune shipped with the ECU, hopefully aimed at a specific car/setup to use as a base for beginning to tune your specific car. Haltech has a lot of documentation (or at least they used to, I expect it to be better now). Read it voraciously.
    • I saw you mention this earlier and it raised a red flag, but I couldn't believe it was real. Yes, the vacuum signal should vary. It is the one and only load signal from the engine to the ECU, and it MUST vary. It is either not connected or is badly f**ked up in some way.
    • @Haggerty you still haven't answered my question.  Many things you are saying do not make sense for someone who can tune, yet I would not expect someone who cannot tune to be playing with the things in the ECU that you are.  This process would be a lot quicker to figure out if we can remove user error from the equation. 
    • If as it's stalling, the fuel pressure rises, it's saying there's less vacuum in the intake manifold. This is pretty typical of an engine that is slowing down.   While typically is agree it sounds fuel related, it really sounds fuel/air mixture related. Since the whole system has been refurbished, including injectors, pump, etc, it's likely we've altered how well the system is delivering fuel. If someone before you has messed with the IACV because it needed fiddling with as the fuel system was dieing out, we need to readjust it back. Getting things back to factory spec everywhere, is what's going to help the entire system. So if it idles at 400rpm with no IACV, that needs raising. Getting factory air flow back to normal will help us get everything back in spec, and likely help chase down any other issues. Back on IACV, if the base idle (no IACV plugged in) is too far out, it's a lot harder for the ECU to control idle. The IACV duty cycle causes non linear variations in reality. When I've tuned the idle valves in the past, you need to keep it in a relatively narrow window on aftermarket ecus to stop them doing wild dances. It also means if your base idle is too low, the valve needs to open too much, and then the smallest % change ends up being a huge variation.
    • I guess one thing that might be wrong is the manifold pressure.  It is a constant -5.9 and never moves even under 100% throttle and load.  I would expect it to atleast go to 0 correct?  It's doing this with the OEM MAP as well as the ECU vacuum sensor. When trying to tune the base map under load the crosshairs only climb vertically with RPM, but always in the -5.9 column.
×
×
  • Create New...