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Hey guys about to buy a 95 R33, mint with the following mods:

19" wheels.

3.5" stainless cat back exhaust system.

Stainless split dump pipe.

E-manage ultimate.

HDi Digital boost controller.

Blitz turbo timer.

GCG high flow turbo.

Air to water intercooler.

Pod air filter and custom fabricated cold air intake.

Towbar.

4 new 235/35/19 tyres

Coil packs just replaced with Yellow jackets

Wabro hich flow fuel pump

Thing is the guy has a dyno sheet reading just 200kw, this seems a little low for a gcg high flow? He doesnt mention injectors so could he just be running out of fuel? He got it tuned at some small workshop ive never heard of so perhaps the tune is crap.

Would bigger injectors and a z32 airflow meter+retune by matty spry or gavin wood net more power? Whats the best place to get new injectors and the afm?

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If he hasn't swapped the injectors over then that would be about right. Mine maxed out around there. I haven't personally used a gcg highflow but if the stock turbo can make around 200rwkw at 14psi then a high flow will put out a lot more. Here is a link to the same person I bought my injectors from. http://www.ebay.com.au/itm/6-660cc-Fuel-injectors-Nissan-Skyline-RB25DET-300zx-TT-/120768070761?pt=Motors_Car_Truck_Parts_Accessories&hash=item1c1e568469 I spoke to them very recently and they have a 900cc set there that work fine but have cosmetic damage only. They mentioned they would be discounted because of this. I payed around $500 for my 900cc's so you would expect to pay less. All these injectors have been used but are refurbished. Get a new afm from any auto store that we all go to on the weekend. Or a second hand one from the classifieds here. Make sure you get a plug for the afm too. In my opinion there is a big difference between a mechanic and a tuner.

I was going to say it was the 19" wheels!!

I recommend at least 21" which should give you an easy 300rwkw.

:cheers:

Man I was wondering about that. So you're saying if I swap the multifit lenso 19's on my commodore to my skyrine it will go quicker? But then the commodore will have to get a set of stockies and will look even more like shit. :P What would a stock ride height r33 look like with 19's anyway. The entire wheel is bigger. It might turn it into a 4x4. That would mean I can swap the gts25t sticker to a gtr badge hey! :merli:

Bit hard on the poor guy!

Yes mate 200 is too low - the turbo should be good for 250 - 260rwkw with a Z32 afm and bigger injectors if all else is in good nick and the intercooler is rated for the job.

Still even eith stock afm and injectors youd expect maybe 220 kw unless its a low reading dyno. How much boost it it at?

I would still xheck it out and maybe do a compression check if your keen on it.

Only jokin fella. You may get a little more power from the stock injectors and afm. If the afm is at 5 and a bit volts then there isn't much you can do except swap it out. My stock injectors were hitting 95-100% regularly and the stock afm was hitting 5.1 volts regularly to get between 190 and 200 rwkw. That was with the stock fuel pump.

How much boost is the guy running? I'm getting 200rwkw @ 10psi with my gcg high flow (low boost setting) +z32, walbro, stock injectors.

May be slightly off topic but where does everyone get the idea stock injectors max at 200rwkw? My high boost setting is set to 16psi and making 260rwkw with standard injectors, standard reg, z32 + nistune by Toshi from our forum. I watched my car on the dyno pulling this figure with stock injectors and told was even still able to push a little bit more out of the stock injectors. But then again it does seem sensible to upgrade the injectors, I just got a bit lazy :P

If he has stock injectors and afm and hence is limited to 10-12psi then yes it sounds completely normal.

My gcg highflow made 210rwkw on 12psi and 240kw on 18psi, depends on what turbo has been used and what wheels it has.

Injectors, fuel pump, afm and a retune shouldn't set you back much over $1500, though if you are buying a car why not just keep looking and find something that a) makes the power you want, and b) doesn't have gay ass chromies on it.

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