Tune Help

[Adz2332]

Hi all,

ive been reading through the dyno results threads etc and just need some advice.

I have a r33 GTR skyline with the following mods

Garrett -5s

AVCR Boost Controller

Power FC and Controller

Tomei Cam Gears

Z32 AFMs

800cc Sard injectors

Walbro fuel pump

Apexi Power Pods, boxed with cold air intake

Apexi Front pipe

High Flow 100 cell cat

Trust expreme TI cat back

Tust 100mm Intercooler

New clutch

Coilovers

Serviced every 5000 or less and just had new brake fluid / bleeding and 4wd fluid and trans fluid

Rebuilt engine about 15,000kms ago

Forged pistons

Multilayer head gasket

ACL race bearings

Extended sump

New rings & honed bore

New R33 GTR Crank

Std Rods

I have had it tuned and asked for a safe SAFE tune for around the streets with ok fuel econemy. its currently runnong 18psi and 333kws.

Im going to be doing some track days and drags shortly and im taking it back in for a high boost tune. (keep 18psi low boost for day to day and a higher one for track days)

Now my questions are.

How much boost can this set up handle roughly?

And roughly what power could i expect?

What would i have to add or change to take the next step and find 400kws?

On the track days if i add some octane booster will this be ok and give me more safety?

Thanks

Adam

[Leroy Peterson]

Dont use octane booster. Causes issues with spark plugs and gains are minimum at best.

[doo doo]

Um, standard rods with standard rod bolts?

[ima_slap_joO]

why dont you see how fast you can do the lap with the gear you got, that way you can keep an eye on temps and stuff with the power level you got now? I dont see any temp control measures in place, would be a good idea to see how hot she runs after a few laps at 330. Nice car too mate, good luck!

[Adz2332]

Sorry i do have a Alloy Rad and about to install a trans cooler....

Its not so much lap times its the mazzanats, ie go to whoa, drags etc

Thinking 22psi?

[doo doo]

If the rod bolts are standard then I think they'd be the weak link in the engine and wouldn't be pushing more than 18 psi into it. If you have ARP's (and resized rod mains) with standard rods then 400rwkw is no problem strength wise. Though for longevity and piece of mind doing track days with 400rwkw I'd probably put some quality rods in it, simply because it doesn't cost that much more than the arp rod bolt option (if they're not already fitted). If you're doing track stuff then more boost might not actually make it that much faster (there are other ways to make it faster too) but will add more heat so keep that in mind.