Jump to content
SAU Community

Recommended Posts

when you say torque is meaningless ..how so?..

is that why everyone posts kw figures but nobody posts torque?

yeah i was told if i wired up two afms so the ecu was tricked to think it was one it could work, however i just figured this would make the car run rich , thinking it was getting twice as much air as it was...which of course i didnt want to do

i have seen it done, but only on cars running management

Edited by doozooby
  doozooby said:
Thats what i thought, but is torque measured on a dyno a reliable indication?

Changing the ramp rate on a dyno can change torque readings. As will other factors.

The true test is the 1/4 mile.

  doozooby said:
when you say torque is meaningless ..how so?..

is that why everyone posts kw figures but nobody posts torque?

yeah i was told if i wired up two afms so the ecu was tricked to think it was one it could work, however i just figured this would make the car run rich , thinking it was getting twice as much air as it was...which of course i didnt want to do

i have seen it done, but only on cars running management

torque at the wheels is different in every gear too. you'll have a lot more in 3rd than in 4th. so unless its corrected to torque at the flywheel by calculation its fairly useless.

you cant run 2 afm's with the stock ecu

Have you just looked at the outside of your ecu or have you pulled the cover off it?

Also lets not forget that there are some "happy" dyno's around, if the one you were on is a happy dyno it could be reading 10-20kw higher than it should, where did you get it done?

If you have a look in the rb25 upgrade thread you will find people with your same set up doing similar sorts of power so its far from out of the question, as i have found tho the limit of the standard injectors (if they are standard), fuel pump and afm is around 200rwkw, im doing 210rwkw with the injectors seeing 100% and the afm tuned to 110% so if you go a hi flow you will need to upgrade all of these and your ecu, plus a fmic if you are still running the standard one.

  MBS206 said:
Changing the ramp rate on a dyno can change torque readings. As will other factors.

The true test is the 1/4 mile.

yeah , apparently its run 12.4, on stock street rubber, soon as calder opens im gunna go find out for myself i think..might have just been a flukey run..or had a a tank full of metho...lol

we opend the ecu up all appears normal,although the sticker on the side says re-manufactured nissan ecu, i havent been able to compare it to any others ..if anyone has pics of a stock label on theres would be interested to see

The dyno seemed pretty legit, it was run a year earlier and pulled over 200kw so im guessing that was a happy dyno...and they were throttling it alot harder..

Edited by doozooby

dont mean to be rude mate, but if the car is performing how you want it, and drives how you want it to, and you happy with the power and torque of the engine, why do you care about a dyno print out? do what your mate said, and enjoy it! who cares what a dyno says!!

  adamskill said:
dont mean to be rude mate, but if the car is performing how you want it, and drives how you want it to, and you happy with the power and torque of the engine, why do you care about a dyno print out? do what your mate said, and enjoy it! who cares what a dyno says!!
  Newy said:
agree 100% with adamskill... dude if its got good A/Fs and is fast point to point. just love it :D haha

Righton fellas, the more i been yabbering on here the more i've realized, who cares ..i love driving it, unfortunately theres not the room or oppurtunity to drive it the way i would like..

on the roads so i think my best bet is to get to the track and just enjoy it for what its worth..learn some new skills

Its not what you got on paper but what you got on the tarmac that matters.

Now i just gotta put me car bak 2geva n hope she works again

Just for the record the A/Fs were purrrfect :D Cheers

  doozooby said:
Righton fellas, the more i been yabbering on here the more i've realized, who cares ..i love driving it, unfortunately theres not the room or oppurtunity to drive it the way i would like..

on the roads so i think my best bet is to get to the track and just enjoy it for what its worth..learn some new skills

Its not what you got on paper but what you got on the tarmac that matters.

Now i just gotta put me car bak 2geva n hope she works again

Just for the record the A/Fs were purrrfect :D Cheers

good idea mate. ill give you the hot tip tho, all the bull shit on this forum about dyno's goes strait out the window when you take ya skyline to the track and realise that ya 10-15 year old car has brakes that dissapear after 2 laps, suspension that is sloppier than porrage, and tyres that loose traction mid corner and spin ya into the dirt. then u realise that dyno's mean absolutley sweet f**k all. rant over. have fun mate!! adam

  W0rp3D said:
You never mentioned if it has a fmic, if it hasnt then i wouldnt take it to the track without one, would hate to see your inlet temps after the first lap.

no it is on my list of things to do along with new tyres. and an oil change..lol..

if you have a spare one laying around ill happily take it off your hands :D

  doozooby said:
no it is on my list of things to do along with new tyres. and an oil change..lol..

if you have a spare one laying around ill happily take it off your hands :D

i do actually, hks one in fact, has the bottom plate bent but no damage to tubes, i'll dig it out and take a pic when i get around to it.

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

    • Well some mostly good news and some slight bad news.  Good news is cylinder 6 did in fact only require a honing and I'm good to run my 86.5mm pistons again. I should also get the block back by end of week. Bad news, had a few surprises pop up. First, main and rod bearings were trashed. No sign of any heat damage. I knew right away what caused this... I had not packed my oil pump originally and spent a lot more time than I would have liked cranking the motor to get oil pressure. It sounded fine once started so I chucked it up to luck and forgot about it. Luckily rod and crank are fine and just need new bearings. Engine builder agreed that this was the cause.    Another surprise that carbon covered up very well that I didn't catch, something got sucked up and went through cylinder 1, 2 and 3. Luckily this was no cause for concern, just needed a bit of cleaning up. Valves look fine but he will vacuum test the head this week to confirm. I'm presuming this was something left over from welding my intercooler piping, but we'll never know. I'm going to thoroughly reclean everything.    So all in all, happy the motor is fine, and I'll get it back much sooner than expected. I'll also be taking the time to convert my WMI system over to direct port. I'll snap some pictures of that when the parts come in. 
    • I understand, thanks. Yeah I wouldn't want the car to tip over, I'll try and use the sills, I don't want to risk smashing the chassis rails. I ordered some rubber pucks that have a hopefully big enough slotting. If the front right gives me trouble I can always just make a wood block. I'll measure and inspect the sills closer once I actually take the car up. I hope so, but the rubber blocks I had in hand so far were pretty damn firm, if they are that hard they won't give much way. I'll let you know what happens. Angle grinding rubber isn't one of my favorite tasks. I'll probably start a build thread soon, for my own documentation and "log" as well as sharing what's going on with the car.
    • Kinda something I have been thinking about.  To be honest, we bought it already driving like that.  So there's no telling how long it actually has been driving like this.  Hopefully damage is too bad when we drop the pan.   I am having a hard time finding a site that sells the solenoid for the 5 speed auto, do you have any suggestions?
    • That'll be most likely down the road...  LOL  
    • a stock / option or aftermarket?
×
×
  • Create New...