Nissan Skyline Rb 25 Gtst Additional Mods

[kay33]

hey guys

ive got a 94 gtst r33 manuel, current mods are 3 inch turbo back exhuast, fmic, greddy e manage, pod filter, turbo smart dual stage boost controller, car is roughly 215-220 kilwatt at 14 psi (standard turbo).

i would like to get another 10-15 kilawatts if possible by maintaining the same amount of boost (14)psi

i have mentioned to my mechanic about gettin either injectors, fuel pump, or getting the additional injector and ignition harness for the e manage, but hes advised that itll be a waste of money, and that my next mod would have to be a turbo upgrade, but i dont really want to spend more than $800 on parts right now,

also do splitfire coil packs give more power?

any comments would be greatly appreciated

[wolverine]

New turbo or E85 + re-tune.

[rondofj]

Coilpacks definitely give noticeable power if your originals are f**ked. Otherwise you wont feel anything, they make it smoother n more responsive just like new plugs.

Edited January 21, 2012 by rondofj

[kay33]

thanks mate

[GTSBoy]

<br />New turbo or E85 + re-tune.<br />

<br /><br /><br />

Only problem with the 2nd half of this idea is that there probably isn't enough capacity left in the std injectors to make the power on E85.

As to the original question.....there's not a lot left in your turbo. You're already running it past the point (boost wise) where you can expect it to crap itself at some (unpredictable) time.

[Mick_o]

Keep saving ya coins till you got more money to spend on mods

[gotRICE?]

The only way you will make more power now is with bigger injectors, pump and retune on e85 if you wont upgrade the turbo.

If your car is making that power, regardless if people say its a happy dyno, you will be maxing out the stock fuelpump and injectors, so adding an extra one wont help if the pump is alreay maxxed out.

Seeing as you dont want to spend any money im not sure how your going to achieve this.

Coilpacks will be $600+ for Splitfires, injectors dont come cheap, then the fuel pump.. then a retune.

I say save your coins and upgrade it when you can afford it.

[Mick_o]

I would also find a new mechanic mate cos sounds like he dont know WTF he is talking about because with out bigger injectors and fuel pump a bigger turbo is useless to you! if you wanna do it cheap buy a 2nd hand GTR fuel pump and some SR20 injectors highflow ya turbs get it retuned if ya shop around and get lucky you MIGHT get some change from $2500 and you will be good for 250kw

[Rolls]

Stock injectors will do ~230kw max safely

But yeah your turbo is out of flow so the only way to make more power is either bigger turbo, or run E85 so you can wind more ignition timing in, stock injectors prob won't flow enough though.

Next step is $4k really as you need airflow meter, injectors, turbo, fuel pump, most likely coilpacks, then clutch, then tyres, then a full retune regardless of if you want 230kw or 300kw

[kay33]

thanks guys appreciate ur comments, so basically, if i do injectors and fuel pump, i should get a power increase, even if boost is stil kept at 14psi?

[Rolls]

thanks guys appreciate ur comments, so basically, if i do injectors and fuel pump, i should get a power increase, even if boost is stil kept at 14psi?

no why on earth would you get a power increase?

[kay33]

ok no worries, thanks heaps

[Rolls]

If you already have enough fuel, eg injectors are not maxed out and nor is fuel pump, then putting bigger injectors in will just require a retune for zero gain, bigger fuel pump is probably not a bad idea but it won't give any extra performance, will just give you some extra safety and if you decide to use E85 down the track it will give you the required flow.

If you are maxing your injectors out the car will lean out and probably make slightly more power but pop the engine. Only replace them if you require extra fuel flow, eg a bigger turbo, as it will require a complete retune which is $$$

[kay33]

thanks mate

[joeyjoejoejuniorshabadoo]

honestly your car is not making 220rwkw - more like 190-200 MAX.

this is what literally hundereds of users on here have found, the only way to get that far on a stock turbo and 98octane is a happy dyno.

for around $800 you could find a second hand highflowed turbo. throw this in and you can get to roughly ~230rwkw (that's a real 230rwkw though) so roughly a 15% gain.

throw injectors, afm and fuel pump at it and you can look at more around the 250rwkw figure.

this is not the best method, however it is the cheapest

also as rolls said you will need a clutch... probably want to shim your diff too

[kay33]

my car dynoed at 220 rear wheel kilawatts when it was auto @ 14psi, by initial d racing,

[GTSBoy]

It's kilowatts.

[ssxRicho]

14PSI will not last very long on a stock turbo either. Do a search "r33 turbo max boost".

Stock Inj + bump the fuel pressure will get you a tad more power (whatever the number on the dyno reads)

After that you can throw what ever turbo you like at is, no more power. Your tuner is telling you turbo and rightly so. The stock turbo will not

last long at 14PSI. Do you want to be cleaning comp housing shards (yes yes the rear blows out, but it unbalances the shaft and the comp wheels generally grinds a nice path up against the comp housing) out of your intercooler?!?!

So basically you need to do all four, turbo, inj, pump and afm.

Also whats up the with e-manage? Just asking seeing 90% of the population use PFC, the other haltech, link, vipec etc.

[chris_82]

Buy this bad boy and max re-tune it on the stock pump and injectors. It may cost a lil more than $800 but ur more than likely up for a new turbo sooner than later running 14psi on ur stock one

http://www.ebay.com.au/itm/Kinugawa-Turbocharger-3-Cover-T3-8cm-V-Band-Housing-TD06H-20G-/290651769905?pt=AU_Car_Parts_Accessories&hash=item43ac320c31#ht_2744wt_1396

Its on sale at the moment.

[joeyjoejoejuniorshabadoo]

my car dynoed at 220 rear wheel kilawatts when it was auto @ 14psi, by initial d racing,

auto should read lower anyway... so that result is even more inflated... there is NO WAY your car makes a genuine 220rwkw on the stock turbo. the lil turbo simply cant flow enough to make those numbers and there have been HUNDREDS of cars on here that prove that.

i wasn't trying to insult you, i was being positive, saying that if you get a genuine 230rwkw it will be 30 - 40 rwkw faster than what you have now, not just 10.

fwiw my car made 185rwkw with the stock turbo on 14psi running the same (ish) mods and a pfc. most people get around the 190rwkw mark.

also stick to around 12 psi. the stock turbo is out of puff then anyway. by going to ~14 or above you really are only squeezing like 5kw out of the engine for a LOT of stress on the ceramic exhaust wheel.

Also whats up the with e-manage? Just asking seeing 90% of the population use PFC, the other haltech, link, vipec etc.

emanage is fine for up to around 250rwkw. according to trent who used to specialise in them there is great gain in upgrading past one unless you are planning on 250+