r33 gtst makes 230rwkw at 13psi

[danieltangtc]

Hi guys,

I dunno how it happened but my car somehow made 230+rwkw at just 13 psi stock boost for hks2530.

Even the tuner was surprised. He now believes that with somemore tuning and upping the boost to 1.2 bars (around 17.5psi), we can make at least 250rwkw.

This was done on a dyno dynamics dyno!!!

I will post up pictures when I up the boost and fine tune the car.

Mods are HKS2530

GTR fuel pump

Power FC

3' turbo back with HKS split dump and race-cat

550cc Nismo injectors that somehow flow 565cc when flow-tested

Z32 afm

Hybrid FMIC

Splitfire di ignition coils

irridium sparks

I am now too scared to drive the car as even at stock boost, the car keeps burning the road when i dun want it to!

The tuner is still insisting on upping the boost to 1.2 bars though...what should I do. Will the car become even more undrivable then???

Dan

[TommO]

If you can't control the power, either

a) Don't turn up the boost more!!!

B) Invest in a decent tyre / suspension setup to reduce traction loss

c) Drive by the throttle

With that kind of power though, I don't think you'll ever NOT get it to spin. Ahhh, how I wish I had your problems !!!!

[GTRgeoff]

Dan

well done. I had 220rwkw with a similar setup except stock injectors, but the bottom end was fully rebuilt with forgies and GTR rods/ ACL race bearings so was good for running that consistently on the track.

I would recommend staying with what is comfortable, plus if the bottom end is stock it becomes more of a time bomb the longer you punish it, and will no doubt go bang at a moment most inconvenient. Also your clutch will be susceptible to burning out with hard accel through 3rd if you cane too hard. You decide what you want, not the tuner.

For the suspension I recommend a set of pineapples (120 plus fitting) which will allow greater traction. Also the stock suspension is crap so maybe some HD systems from UAS (1400ish) but order the softer springs (120 per pair or get them specced with the softer springs) for nicer road work if you don't track. Search for spring weights by Sydneykid who is our suspension Guru for examples. With this I was just chirping through second on the irregularities on the road on Dunlop 9000SP road tyres.

Hope that helps.

[600hp]

I would be getting a better set of tires, and just getting use to what power you know have.you don't want to wrap the car round a pole!

[BHDave]

More boost!

But thats my answer to everything.

I'd get used to what you have then go for more 2530 + rb25 = response. You'll have to start rolling on the throttle rather than stomping on it you lucky punk.

[Bass Junky]

More Boost.

Use 2nd more than first!!!

[BBQ]

More boost... You don't have enough power until your frying tyres in 4th gear...

It would be intresting to see how it goes down a 1/4 mile.. Also do you have a dyno graph ?

[Dee 33]

I'm running 240rwkw at 16psi at the moment and although my brand new tires managed to hold second without losing traction for 2 weeks, they're now starting to spin whenever boost comes on. 3rd gear can hold traction, but second no longer.

Once you start losing traction it just gets worse because the more traction you lose, the faster you lose tread and then you lose more traction blah blah. Just like a turbo boosting it creates a chain effect that gets worse and worse.

Good tires for the win!

[JCMarshall_Law]

Geez man, I wish I had your sort of problems with my car!

[chops]

It's all in the right foot.

Learn to control your throttle application.

Once you do that, you'll enjoy the car again.

Happy (and safe) motoring!

[Sydneykid]

Far too often I read a list of Skyline mods and I can't find anything that would improve the handling or brakes. Spend a small fortune on the engine and then can't use it. They don't have too much power, they have TOO LITTLE HANDLING.

Well Dan, it's time to balance up the equation, pop over to the suspension section for details.

PS, aftermarket injectors always flow a little more than their rating (it's only 2.7% after all), nothing unusual there.

[danieltangtc]

Thanks a lot guys for all yur answers....

I think I will up the boost to 1.2 bars then see how it goes. If I don't like it, I can simply turn the boost controller off. At least my PFC will be tuned to handle 1.2 bars when i turn the EBC back on.

Right?

[benl1981]

Is this HKS turbo you have more responsive than the standard turbo??

I.e. does it boost earlier?

[danieltangtc]

The car is virtually permanently on boost. Even when it is not moving, u can sometimes hear the ball bearings still going for a while after the engine is off. Boost comes on very very hard suddenly and pins you in your seat with wheelspin just under 3000rpm.

So yes, I personally found that boost came on earlier and very much harder than the stock turbo.

i had to release my accelerator pedal to gain traction....i keep losing traction each time i overstep the acceleratiors. I am now practicing to be very friendly with the pedal.

Oh yes, I am surprise....my clutch is not slipping....how come? Its only a heavy duty 860kg organic!!!

I managed to drag the car up till 90km/h in 1st gear. That took me 4 seconds.

[siksII]

I managed to drag the car up till 90km/h in 1st gear. That took me 4 seconds.

u must mean second, as first runs out way before 90

and benl1981: i have a friend with same car as me apart from is have stock turbo and he has 2530, the 2530 is no laggier than stock, i would not say less laggy though, either way very very close.

the difference is when the 2530 comes on boost(with higher boost levels obviously contributing) it hits hard!!

in second/third gear in the 2530 equipped car u really gotta hang onto it with stock suspension so dan i know what u mean, and you really should change your springs/shocks and adjust camber.

[grandmasterb]

pretty impressive figure dude, hope goes well with what ever you choose to do.

[Race__24]

What boost controller are you running?

If you had say an AVC-R you could run just enough boost in each gear for the wheels not to spin/just spin.

or just don't plant it all the time

[danieltangtc]

Yo Aaron,

Im running a blitz dsbc type R. But the car is currently running on stock boost (apparently its 13 psi on my HKS2530) I see you are in SA as well!!! Me and a few other guys around our age of 20-24 meet up now and then. You should come join us mate!!!

just today, Sam, Duc and myself went for a drive in my car... and it reved cleanly to 9000rpm and wheelspins all the way in 1st and abit in 2nd....pity i forgot to get a picture of 3 R33s together in a row! You must come join us some time buddy. My hp is 0403671496

Dan

What boost controller are you running?

If you had say an AVC-R you could run just enough boost in each gear for the wheels not to spin/just spin.

or just don't plant it all the time

[Robo's]

and it reved cleanly to 9000rpm  

Dan

You on drugs or what?

[Nozila]

No he aint. but it seems that dan revs it to 9 grand on a regular basis in 1st gear. No backfire nor misfire either. =O