Dyno Results: 196rwkw For Basically Stock Rb25det

[rb26s13]

maybe the car isnt as stock as the owner things?

remapped? highflowed turbo? rest stock!?

[WazR32GTSt]

i agree..

aftermarket ECU fo shizzle

[MerlinTheHapyPig]

it shouldn't be running that lean from factory, even with your mods.

my money would be on

-remapped ecu

some other possibilities

-fuel pump

-fuel filter

-fuel pressure regulator

-injectors

^ I would think problems with fuel system would cause it to lean out at higher load, i don't think they would explain it leaning out across the board.

if you want the cheapest solution possible, grab one of the old-school Apexi AFC's, one knob - rich or lean...

[The Mafia]

whoever did that dyno cabration is a f**king tool.

There is no way in hell so little mods could make that much power.

to get 210rwww, I needed a full exhaust, Powerfc, FMIC, toluene, massive timing advance etc.

My engine was tested and had 169psi compression accross the board, and 2% leakdown.

f**k I hate it when I see dyno graphs like that - they are just bullshit. I know dynos are a tuning tool, but yeah, why don't they just set it to make 1000kw, and work from there? You know, add a boost controller and make maybe 1050kw then?

oh, and those AFRs are completely rooted. The tuner is a tool for not bothering to point out that your car will most likely blow to pieces due to a very dodgey fuel pump, FPR or something in the fueling system.

Oh, and you can't simply "tune" a factory ECu, unless you have a SAFC, or someone that can burn new chips for them. (And thats rare)

Edited September 30, 2006 by The Mafia

[insu]

In everyone's experience, what would you expect a stock (computer) R33's AFR's to look like with those mods (Ie full exhaust, pod etc)

Maybe start off around 13.0 then to 12.0-11.5 at 2400rpm to 4500ish rpm, then maybe to 11.0 or even 10.5 on to 6800rpm etc?

That AFR looks to be the flatest i've ever seen come out from a 'stock' cpu'd 33.

[Taso84]

whoever did that dyno cabration is a f**king tool.

There is no way in hell so little mods could make that much power.

to get 210rwww, I needed a full exhaust, Powerfc, FMIC, toluene, massive timing advance etc.

My engine was tested and had 169psi compression accross the board, and 2% leakdown.

f**k I hate it when I see dyno graphs like that - they are just bullshit. I know dynos are a tuning tool, but yeah, why don't they just set it to make 1000kw, and work from there? You know, add a boost controller and make maybe 1050kw then?

oh, and those AFRs are completely rooted. The tuner is a tool for not bothering to point out that your car will most likely blow to pieces due to a very dodgey fuel pump, FPR or something in the fueling system.

Oh, and you can't simply "tune" a factory ECu, unless you have a SAFC, or someone that can burn new chips for them. (And thats rare)

U need to get ur facts straight my friend.

1) I have already said i will check wat the ECU is, coz ive never looked at it

2) It is not a BS dyno graph, and I have not got a boost controller

3) The tuner did point out to me that its lean and to take it easy

4) Its already been established that it is most likely not a fuelling issue

5) I neva said that i tuned the stock ecu.

If u dont have nething constructive and useful to add other than obvious things like "u cant tune the stock ecu" then dont bother posting. Obviously u have just scrolled down to the bottom of the thread without reading everything inbetween

Edited September 30, 2006 by Taso84

[Taso84]

In everyone's experience, what would you expect a stock (computer) R33's AFR's to look like with those mods (Ie full exhaust, pod etc)

Maybe start off around 13.0 then to 12.0-11.5 at 2400rpm to 4500ish rpm, then maybe to 11.0 or even 10.5 on to 6800rpm etc?

That AFR looks to be the flatest i've ever seen come out from a 'stock' cpu'd 33.

Apparently it goes down to 13 first then when max torque hits it should dip down to 12. In most ECU's however, it will usually go into R&R mode and AFR will dip down to 11.

Can any1 confirm this?

[The Mafia]

U need to get ur facts straight my friend.

1) I have already said i will check wat the ECU is, coz ive never looked at it

2) It is not a BS dyno graph, and I have not got a boost controller

3) The tuner did point out to me that its lean and to take it easy

4) Its already been established that it is most likely not a fuelling issue

5) I neva said that i tuned the stock ecu.

If u dont have nething constructive and useful to add other than obvious things like "u cant tune the stock ecu" then dont bother posting. Obviously u have just scrolled down to the bottom of the thread without reading everything inbetween

I am being constructive - I'm telling you not to believe that stupid figure.

Ther are possibilities -

1. Remapped ECU - But even then at 8.5psi you wouldn't be able to make 200rwkw.

2. High Flowed Turbo

3. Tuner "adjusted" the dyno to make himself look good.

[Taso84]

Just looked at ECU, it looks pretty stock. Its got a Nissan badge on it and says Hitachi, made in Japan.

So the only possibility is that its remapped.

In terms of saying tuner rigged it, u obviously don't know Ray coz his an honest guy and wouldn't do that. Plus its not in his interest coz then I would not need to buy further mods from him coz i would be happy with the power of my car

Hi-flowed turbo: Mayb, but it I've seen it off the car and it seems like it hasnt been touched since the factory.

What other possibilities can u come up with, coz it does seem wierd, mayb just a freek motor?

[Taso84]

Mafia, have a good read of this thread: http://www.skylinesaustralia.com/forums/in...?showtopic=9292

I dont think i mentioned it, but my car in a 95 build, which according to some ppl has some kind of diff chip that get better gains and tends to not go into R&R mode. It also doesnt have the infamous flat spots.

I jus wonder, it doesnt make much sense but mayb the '95 skylines with the diff ECU are ok on AFR 13. Just a thought

[Cubes]

No turbo'd car is 'ok' with a 13:1 AFR.

[The Mafia]

No turbo'd car is 'ok' with a 13:1 AFR.

damn, beat me to it cubes

Mafia, have a good read of this thread: http://www.skylinesaustralia.com/forums/in...?showtopic=9292

I dont think i mentioned it, but my car in a 95 build, which according to some ppl has some kind of diff chip that get better gains and tends to not go into R&R mode. It also doesnt have the infamous flat spots.

I jus wonder, it doesnt make much sense but mayb the '95 skylines with the diff ECU are ok on AFR 13. Just a thought

this "different chip" is nonsense.

I have a 96 and if that chip was so good, do you think they would have removed it from the later models?

Mate, I'm pretty sure you have a remapped ECU, and a few other things wrong to bring the AFR's up to 13:1. No tuner in the world would tune a turbo car to those kinds of AFRs. Thats just death wating to happen. If you don't believe me, go take your car down to the track, and tell me how long it lasts until you start hearing crunching noises coming from under the bonnet.

And and you are saying that your mate tuner is reliable?

He told you he tuned the car right? WRONG. A tuner can't to a single thing to a car with a factory ECU. Maybe turn the CAS a little to advance the timing, but thats definately not going to make the AFR's change or allow your car to run 200rwkw off 8.5psi of boost.

Also, just to give myself a little credibility, I have a R33, tuned by ME (powerfc), 90% of the work done by ME, and is currently running 12's, with enough power and a good launch to run low 12's.

Edited September 30, 2006 by The Mafia

[QRI05E]

Thats excellent Jono... whats the settup (mods) you got on ur SII R33???

[RANDY]

I didn't read anywhere that the car was tuned? It was just a dyno run wasn't it?

[The Mafia]

Thats excellent Jono... whats the settup (mods) you got on ur SII R33???

thanks..

She's worked a little

Powerfc + Datalogit for Tuning

Full Exhaust

FMIC

Garrett GT30 with a RB25 Ex housing and a .7 comp cover

Water Methanol Injection

I know its got a bigger turbo, but yeah..

Sorry about being a slight thread troll, just trying to be clear about what is actually going on here with this particular dyno run. Something is fishy - and I want to know what.

[Taso84]

I didn't read anywhere that the car was tuned? It was just a dyno run wasn't it?

Ha ha, ive like stated this twice 2 mafia and he still DOES NOT GET IT. I'm not gonna try a third time

[Taso84]

So, say the ECU has been remapped for arguments sake, then what should i do to fix this problem. So far I can think of a few solutions.

1) replace with powerfc or SAFC + tune cost = $1000 - 1500

2) Find out wat the remapped ECU settings (if this is possible) and modify my car (prob will need to ugrade turbo) to run remapped settings cost = unknown. If ne1 has done this before PM me ASAP

3) Somehow (if possible) unmapp ECU. Cost = unknown (<$500 i estimate) prob not the smartest choice

I really want to fix this leaning problem but at the same time I dont want to throw away wat could potentiolly be a awsome remapped ECU.

[Cubes]

If you want to fix the leaning out problem head back to your tuner and have him suggest what he thinks it is.

Hell he deals with cars every day so no doubt he will have half an idea and will most likely book it in when he has another r33 there so he can swap out the ecu's. OR if he deals with the skylines a lot he will have spare parts laying around for trouble shooting.

[WazR32GTSt]

you could try borrowing comeone's stock ECU from their car, plugging that in and seeing if the problem goes away...

[The Mafia]

the last two posts are god ideas.

I have a stock 1996 ECU you can buy if you want.

I am pretty sure they fit the 95's, and my mate has a 1995 GTS-T and it ran perfect with it.