Dyno day results

[GroundControl]

Well that was an interesting outcome.

In short:

• buy a stock prefacelift VR4
• leave it that way

Will scan my chart in when I get the chance, but have attached a photo of the final figures

1. 206.6 kW - brad's mum's monaro
2. 156.2 kW - ? (200sx)
3. 161 kW - mpau009 (prefacelift, boost controller, ...?)
4. 170.6 kW - Jaimz (prefacelift, no mods)
5. 141.5 kW - Adrian (Forester)
6. 153 kW - Kenneth (facelift, intercooler, ...?, was misfiring)
7. 152.8 kW - dickytim (prefacelift, exhaust)
8. 174.6 kW - maori_by_nature (prefacelift, exhaust)
9. 92.8 kW - Gly (Legnum ST)
10. 148.4 kW - William (facelift, intercooler)
11. 172 kW - GroundControl (prefacelift, no mods)

Someone else can fill in/correct me on that list

[mpau009]

4) was Jaimz strangely fast prefacelift
5) was Adrian (non member) Subaru (stock)
10) was williams new facelift, but not sure of the online name

[g6acb]

Handy web page to convert Kw in BHP here.........

http://www.rb20det.com/kwtobhp.html

take it these figures are at the wheel....

[You See]

Yep, a great day had by all...and a few surprises to say the least.
...Pity for the learner drivers leading the pack *cough Richard cough*

[mpau009]

Yeah, top marks to You See for doing the hard yards , i had a great time.

If only the camera hadn't gone flat right as my best run was on.

I'm sure we'll be in for an interesting rematch in a while. I'd be keen to see what Kens car would have made without its electrics issues... Maybe once Brad and UC get themselves together the three of you should get a run on the same dyno.

[Gly]

mpau.... did you forget something before you left??

my car was the loudest and best sounding... so i win overall

[mpau009]

mpau.... did you forget something before you left??

Damm it! I was just too keen to get home and rip things apart, i'm just about to cut that hole in the same place as yours.

Anyhoo, i guess you might as well hold on to it until the next meet, i still can't afford to paint it. If not i'll ring you when i need it, and come and get it.

Any chance you can post up a pic of where the flexible hosing went on your intake? i didn't have a proper look. Does it draw from the vent in your bumper?

Iv been trying to jam a piece of 3"ID flexi aluminium down between the light and radiator like i think i saw on one of the UK cars, to draw from next to the intercooler, but its not working very well. Lucky iv got so much of it...

[Gly]

haha. sweet as..

i went home and rip ot my stereo and fitted my new one..

mine just goes down to the vent directly in front of it... right next to my spot light

[OSiRiS]

wtf? So the pre-facelift standard VR4s had more power atw then the facelifts?

Certainly that can't be right according to Mitsi standard specs?

[GroundControl]

Well there's something not quite right happening I think (at least in my case).

As far as I know the car is standard, but my boost was peaking at 12.7psi (whether that's due to something I don't know about, or something not working quite right - I'm not sure).

Was going to scan in my dyno plot at work today, but our printer/scanner/copier appears to have caught fire.

[dreamer]

Hey guys.
Sorry I didn't end up making it.
After beating M_B_N in a couple of inpromptu races last night, I Was fast asleep (slept through my alarm clock!)

I'm annoyed at myself for not coming to watch, and I certainly should of had a run to see how I stack up against Sam and David.

Glad to see everyone enjoyed themselves.


I saw OsiRiS's new bonnet this evening, looks mighty Fine

[OSiRiS]

I saw OsiRiS's new bonnet this evening, looks mighty Fine

lol what the? Did you drive past my house or something?

[dreamer]

lol what the? Did you drive past my house or something?

I drive past your house most days!

I'm the silver Pre-Facelift Wagon with the Black Vinyl strip down the side with RalliArt and TurbsWork written on it.

Oh yeah... and I'm always staring and drooling at your car.

I saw the photos you put online earlier today - looked Cool, and I have to say It looks 10x better in the flesh.

very PHAT.

[jaimz]

Yeah, thanks for a great morning guys. Especially You See for the excellent organisation, moolah-handling etc.
Can't account for either my or Ground Control's results. Standard everything

Nice to throw a spanner in the works for you brainy dudes yeah..?

btw, Brad said that Robin at Torque Performance was going to pdf him all the result curves, so I'm pretty sure they'll be up soon. Either that or Brad will be able to draw them in Paint from memory!

[richy rich]

OK so 172kw works out to be 230bhp at wheels that is good results

so stoke pre face vr4 is supposed to be 260bhp at flywheel
so we loose 30bhp through the transmission.

im happy with this

[GroundControl]

Mine is a pre-facelift manual, which I believe is supposed to be 280hp stock (I think only pre-facelift autos were 260hp?)

But according to my plot I'm running more boost than I understood was standard, so taking 172kW mightn't be a good benchmark for a standard car (or maybe it is, proving that manual pre-facelifts are just the best sort )

[mpau009]

Just to reignite the debate, i was thinking, could it be a recall issue? From memory wasn't there some ECU related recall at some point? Or could be something else along those lines?

Its either that or i'm back to the boost control solenoid issue idea.

20Kw at the wheels is a decent variation, it must be something significant.

[GroundControl]

Didn't have the use of a scanner in the end, so made do with a camera instead - here's my dyno chart

Any ideas on the boost curve? Someone suggested a 'sticky' wastegate perhaps

And the AFR seems quite rich, going from 13 down to a touch over 10...

[Edit]
And the bit at the bottom that I chopped off shows:
Ramp Rate: 12.5
Lead Time: 8
Air Temp: 23 deg C
Rel. Humidity: 59%
Air Pressure: 1015mb
Correction Factor: 0.994 (Turbo)
[/Edit]

[You See]

Yeah, thanks for a great morning guys. Especially You See for the excellent organisation, moolah-handling etc.

Always keen to take your money!...too bad I couldn't keep it!

[Wodjno]

OK so 172kw works out to be 230bhp at wheels that is good results

so stoke pre face vr4 is supposed to be 260bhp at flywheel
so we loose 30bhp through the transmission.

im happy with this

I would say closer to 140kw = 177bhp ATW.. Loss of 83bhp for standard post facelift