Need Info, What Next To Do?

[stÖrmy]

Well ive been building a drifter for the past few months, i bought it as a completely stock r32, didn't even have a fmic or a boost gauge. Since starting the build ive done the mods below.

Hks Split dump into 3" Kakimoto ( ill be running strait of dumps on track anyway )

Fmic

Welded diff

Pod filter

Tune up ( plugs, oil, timing belt, thermostat, water pump )

52mm Alloy rad ( stock clutch fan and electric thermo fan setup )

Boost and temp gauges

Hdi Boost controller

Safc

vg30 op6 Turbo

My next thoughts were to get a better exhaust and intake manifolds then go for a tune before hitting the track. When reading about the vg30 turbo i assumed that a safc would be enough to play around with to get the car running nicely with the new turbo, But have since been advised i need to spend another grand or two getting nistune installed and a tune with it before getting any benefits out of the new turbo, So im slightly annoyed and confused.

So far i have test ran the car with the new turbo @ 15 psi, Pressure holds @ 15 on stock rb20 actuator from around 3500 to 7000 and doesnt drop off at all, ive not been able to give it a really good test because i dont wannt be speeding around in an unregistered drifter.

But so far it does feel that the stock rb20 turbo @ 15 psi pushed me into my seat more than the vg30 one at 15psi, again ive not got it tuned yet.

Any thoughts / opinions are welcome!

[scotty nm35]

Get it properly tuned with a Nistune, safc is crap imo.

[R TUNE]

Nistune cost's $420 for the ECU and budget about $300-$400 for a tune depending on how much is required.

e.g My old R31 skyline, but a cam and cam gear in a nistune at the same time. Took 3hours to tune from the factory tune.

also you would probly notice a power loos if you went to your track exhasut set up if you tuned the car with a street exhasut (due to the lack of back pressure). IMO just keep the exhaust on when u drift. Your current exhaust should be fine.

Also you mentiond you are going to use both clutch fan and thermo fans?? Can u elaberate how u plan to set this up. However for your info a clutch fan generly flows more air then a thermo fan set up thus better cooling.

[KiwiRS4T]

You're spending too much cooling the engine and not enough hotting it up!! Read the turbo upgrade threads above to see what you need to do. e.g. manifolds do not need replacing - get your stock turbo highflowed. Nistune fitted and tuned should be less than $1000.

[stÖrmy]

hmm ok nistune sounds the go. i have a thermo at the front of the rad, its a push pull config, the fan draws alot of power though, when i switcn it on the idle drops big time so i might just use it when the car is stationary.

[XRATED]

1. Sell the SAFC

2. Install a nistune and get it tuned

3. Stop waisting time and money on power and start on handling modifications

4. Some HSD coilovers

5. Caster rods

6. Rear camber arms

7. Hicas cancell bar

8. Decent alignment set up!

Then save up for a bunch of wheels any tyres, then more tyres and some more tyres....

J.

[bubba]

NIStune boards for RB20s are only about $220 if you don't want a license for the software, $50ish for a competent electronics tech to fit it, few hundred bucks for a tune.

Don't bother with upgrading intake and exhaust manifolds, too much expense for little to no gain or as far as intake manifold goes, you will go backwards. The RB20 really needs those long runners. Stock exhaust manifold is good for up around 300rwkw too.

[stÖrmy]

hmm ok well ill be booking it in for a tune soon then. curious as to what kind of power i can make safely with the current setup. will probably get some bc coil overs soon.

[zoidbergmerc]

1. Sell the SAFC

2. Install a nistune and get it tuned

3. Stop waisting time and money on power and start on handling modifications

4. Some HSD coilovers

5. Caster rods

6. Rear camber arms

7. Hicas cancell bar

8. Decent alignment set up!

Then save up for a bunch of wheels any tyres, then more tyres and some more tyres....

J.

Everything this man said.

You'll go through about 3 pairs of tyres a day.

Get some BC coilovers, they're like $1200

TuneAgent Adjustable castor rods $260

and some adjustable camber arms.

Driftworks do a kit for like $2500 that includes coilovers and pretty much everything else you'll need to make the setup adjustable and delete hicas. I don't know about the quality of that kit as I havn't done a lot of research into it.

[stÖrmy]

Ok well car is now booked in for tune next month @ hyperdrive so should be good. those bc coilovers look the goods