I am keen to get the R33 into the 12's now, so I thought I'd detail my plan of attack. Just so people can track my success and failure as I mod down the path.

The objective is to get into the 12's with the stock turbo and intercooler without huge boost (hopefully 10psi or a snick over) and retaining stock or better fuel ecconomy and without sacrificing road manners. The factory ecu will be retained with just the S-afc.

Plan A.

* tune the Apexi S-afc II for additional horsepower and broaden the power band.

Plan B.

* add a HKS adjustable cam gear to the exhaust side at 4degrees retard. And retune the S-afc again. Set to bring boost on quicker not peak power.

Plan C.

* Change factory pulleys over to lightweight and slightly underdriven alloy ones. Just like the light flywheel, rev..rev..rev..

Plan D.

* Remove the fluid clutch style engine fan and replace with thermo fan.Removes drag and weight from the pulley, as above.

Plan E.

* Buy wider tyres for the rear. Aw do I have too?

Plan F.

* Use toluene. I use this when I get bored anyway, but I'll tune an S-afc map for it.

Each plan I will try to impliment with sepparate drives down the 1/4, to demonstrate the relative effects. However I will only proceed to the next mod if I don't reach 12.99, then again I probably can't help myself:D

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Sounds like a good plan, it will be a close call but you might be able to do it, will be interesting to see which of these has a noticable effect.

I'll come and watch you run at the plex, try and learn some driving tips.

See'ya:burnout:

Will u be doing any dyno runs between Plans ?

benm,

Maybe I'll do some dyno runs, if I really need to. Like the S-afc/cam gear. Otherwise its just a waste of money.

Gtst-vspec,

All the mods on that list I know work, exept for the cam gear, because I have used them on other vehicles. Most don't yeild very much power but improve response and together they should add up to quite a punch in accelleration. How much will I need to get into 12's will be the interesting part.

good luck dude
hope it gets there
probably will as well
seems like you have done your research
if ya need a hand with anythin
i'm willing to lend a hand
adrian

dave, why did you go with the safc over the e-manage? I thought you were sold on it.

rob77,

The e-manage is much better but I was not prepared to go through the whole 'tuning' thing since I am probably selling the car shortly. Also the knock sensor and 15sec log sold me along with the price. I'd say the emanage will make more power for sure.

You've been selling this car for the last 6 months or so Admit it you love it. Nengun has the HKS cam gears for $180aud delivered I think.

why do all this if your only going to sell it soon?

akeenan,

tax deductions...it's used for work.

I have had the car for almost 3 years now so I need to get a new one so I can claim more depreciation. I've been 6 months in decision land trying to think of the car to get as a replacement.

In the mean time while I can't make up my mind I do little things to make it quicker and more efficient.

I just wish i knew 1/2 of what those upgrades actually do.

So how come you spend all this money just to sell it again? I know you can up the price of the car but you wouldn't get full price.

benm,

The mods do these things:

S-afc tune -- increase horsepower (through a leaner A/F ratio)

HKS adjustable cam pulley --- increase torque and power by changing the camshaft timing.

Light Aftermarket pulleys --- by reducing the weight you decrease the time taken for the engine to achieve any rev, also by running 15% underdriven pulley ratio from stock you decrease the drag created which restores some HP lost to that drag.

Changing to a thermo fan --- as above for the drag aspect.

Wider tyres --- more grip, less wheelspin--- better time.

Toluene --- a fuel additive that increases the octane in your fuel/ increases the pinging threshold so can run more timing it also adds power by virtue of its higher engery content. More HP!

Interesting thanks for that. Im still learning about PowerFC's, PineApples, AirBoxes and all those little parts first.

I guess their is a sh1tload of mods that can be done -before- needing to upgrade the turbo to get small benefits, sweet.

mate I probably haven't spent even $2000 yet on mods, so there ya go.

Rev,

I reckon you'll break into the 12's. Your not far off it now !!

Like you said, it's all about being smart with what mods you do.

Keep us updated as you go.

J