Expected Performance?

[Zebbie]

Heya all, i've not had my Gtst long, and i'll be testing it next week, and wanted to get some idea of the figures i'd *expect* to see, within reason.... Afaik, it's not been tuned/touched etc since JustJap originally did the mods in Jan 2003

I'm still very much learning about 'lines - any recommended mods to improve from this point?

It's a '96 S2 Gtst with the following mods:

Mines Ecu (used)

T04 (recon)

Nismo Fuel Reg

3" Cat Converter

What I can guess as 'normal' turbo ducting etc..

(Pics : http://212.42.1.197/Zeb/line/bonnet1.jpg - http://212.42.1.197/Zeb/line/bonnet2.jpg - http://212.42.1.197/Zeb/line/line.jpg )

Tia -

Zeb

[Zebbie]

Bump >

Anyone?

[KamikazeR33]

depending on what size t04 id say bout 210-220rwkws maybe

[Zebbie]

After a bit of digging, and some great help from JustJap, (actually remembered my line :-D )

It's a T3/T4 Hybrid, with enlarged/bored out sections (Front and back), to increase flow. (Steel rather than ceramic)

He wasn't sure of exactly what size, and i'm not pulling it out ;-)

Hope that helps

[knore]

Well the mines ECU may cause problems over 6000rpm due to less octane fuel in australia (assuming it was originally tuned in japan)

Depending on tuning and turbo, ide say 210-230rwkw fairly easily on about 14psi

[Zebbie]

Well, the lines was added after import, at the same time as the turbo, intercooler etc...

[Zebbie]

Well, the mines was added after import, at the same time as the turbo, intercooler etc... But god knows about the tuning....

(I always run on 98 octane, you can *really* feel the diff if i've had to put 95 in... )

[knore]

Its 99% likely that the Mines ECU is set up for japanese conditions IE 100+octane fuel and way colder conditions

So running 98 which is the best octane we have here, at high boost and high rpm will see some problems

My advise;

Before doing anything with/to the car, put it on a dyno and see if theres any problems

[Zebbie]

That's exactly what's happening on thursday :headspin: Dyno incoming :-D

You would have thought in Bathurst, that there would be loads of decent mechanics/workshops etc..... Had hells own trouble finding decent ppl

[Sydneykid]

I have seen about 4 Mines ECU's and all were very rich and not particularly aggressive in their tune. No speed cut was good, raised rev limit was a waste of time, boost cut removed was good, otherwise not such a good thing. :thumbdwn:

[benm]

Got an easy 5rwkw gone begging cos the engine bay needs a degrease

[Zebbie]

ok... done the dyno, am feeling a little dissapointed, as was expecting more.....

Max 227.8 HP :-(

I'll scan the plots in tomorrow, and hopefully SydKid etc could decipher it for me ;-)

The good news is that the power curve is pretty linear, (excluding end drop off )

It does look like Sydkid was right one one side, about top end revs on the ECU lacking, but.. it was running a little lean according to them....

Will get the scans done tomorrow...

I could be missing something here, but it looks pretty good for a start... (if on the low side)

[paulr33]

i got a 141rwkw (189HP) with stock series 2 including stock exhaust and boost. You should be getting up near 180-180 at least with aftermarket turbo and an ecu chip. what exhaust do you have? it just says 3" cat. what boost are u running the t04 at?

[Zebbie]

The runs were done at 13psi, and looking at the limited paperwork I have, They fitted a 'front exhaust pipe, exchange exhaust system, and a 3" cat convertor'

Not much more detail than that, i'm afraid.

(Will get the scan(s) done this morning)

[Zebbie]

Here's the plots :

Plot & Torque Showing

Plot & Mixture ??

Can anyone help with translating these plots into something I can readily understand, so I can look to improve this?

Excuse me if I sound like a complete noob, I am :Oops:

[Sydneykid]

Here's the plots :

Plot & Torque Showing  

Plot & Mixture ??  

Can anyone help with translating these plots into something I can readily understand, so I can look to improve this?

Excuse me if I sound like a complete noob, I am  :Oops:

Typical Mines ECU, stable A/F ratios but simply too rich. They need to be between 12 and 12.5, not mid 11's. The ignition timing will be similar, solid but too retarded. Did you get a boost graph?

[Zebbie]

Thanks for the comeback SydKid, I'll pop in to them tomorrow and see if they did do one.

The two graphs were all they gave me.

If I was looking to up the overall power etc, would I be looking at changing the ECU & Retuning? or would it be a lot more involved?

(I'd love to get to the 350 *ish* HP, but i have no idea if that's a realistic goal with the current setup. )

If so, what sort of ECU would be idea? Something like a Wolf3d?

Tbh, I've got about 5-10K I could throw at the car if needed.

[Sydneykid]

Power FC would be my choice and with a decent intercooler and fuel pump there is no reason why 225 rwkw (300 rwhp) would not be easily obtained. With larger injectors and an AFM upgrade (to Z32) 250-260 rwkw (350 rwhp) is there for the taking. There are pleny of threads on this sort of upgrade path, do a search, I am sure you will find all that you need to know.

[Zebbie]

Excellent, thanks :-D Will get reading - that sort of level would be about right for me