Boost luver

iTrader: (3)

Hello guys
Well I want up the power of my sti I have the following

Sti bottom end
Fmic
Full 3" system no cats
Hrc fuel pump
Pink box clutch
Gt spec headers
Esl ecu

What turbo would be best purely road car and what injectors will I need? I no in taking the risk with my box but when it go's it's a good exuse for 6 speed
Is there anything else I need apart from turbo/injectors

Cheers guys

alphaj12

A lot of cash I'm guessing lol

Boost luver

iTrader: (3)

Shouldn't be to bad (I hope) was thinking a sc36/38 turbo??

alphaj12

Keep the thread going with updates and prices

I'm on a standard WRX and wouldn't mind hitting 300 at the right price. Also wanting boost to kick in lower than 4000 revs so will watch with interest

MrNoisy

iTrader: (28)

SC36 won't get you to 400. SC38 maybe not either, probably SC40 or SC42.

I'd say consider the 6 speed conversion to prevent killling your 'box; at 400 and probably around 350-370ft/lbs if you go around launching it it'll only be a matter of time. You're better off just getting the conversion than spending money on a 5 speed clutch and then having to replace it later.

If it's a WRX engine, but you have an STI bottom end I'd say get STI AVCS heads, if you can get some with TGV delete done already.
Oh, but on standard 4 pots you'll cack your pants when you try and stop, so BRAKES.

Turbo wise I'd say for a guaranteed 400 go for an MD321H or T (probably latter), and appropriate injectors - maybe 800's for future proofing.

Out of interest, what's the car running at the moment?
Many people state they "want 400bhp" but have you been in a car running 300, or 350? Just trying to make you consider your options carefully.
HTH

Boost luver

iTrader: (3)

Thank you for that reply,
I'm currently running 335/350ftlb the car go's ok but just want a bit more out of it, as iv come from a 550 evo, so I think if I can get it upto 400ish it should feel more lively, iv got version 4 sti heads are they any good? It just seems to run out of puff about 6000rpm.. I was thinking a vf34 with the p20 housing?? I keep saying I don't want go crazy but I just miss the power.
Injector wise what do I go for as in make rc?
Iv got some brembos front/rear just deciding on what pads was thinking carbotech xp8's
Oh it's running a vf35 at the min, would it be worth just upping to the vf34 or vf22??

Regards

bigsinky

what version of car please. are you running standard internals at the moment? your sti bottom end is from what?

Boost luver

iTrader: (3)

Is a 1997 classic sti, the engine was rebuilt with forged rods/pistons, but kept the version 4 heads..

sonic93

iTrader: (16)

I run a sc40 at 380 but capped there coz of clutch slipped. I'm on standard Sti 3 internals and a standard dccd v3 early box . If I did again I think I would of maxed out a vf35 for a quick spooling car and safe on box and engine but touch wood been like this since jan.

MrNoisy

iTrader: (28)

VF34 won't get you anywhere near 400. 360 at a push maybe.
If you're running a '35 now, you'll barely notice the difference; not much of a step up, and the 22's are very hit and miss, I'd avoid them.

If you want more mid and top end, go for either an 18g if you want to get into the 360's, or a 20g for the 380's.
The good ones (like SC38, Harvey ones or AFP ones) normally make good power and are reliable, and there are a couple of AFP 20g's on here for sale at the moment - they don't seem to come up that often so good opportunity.

I've gone from a '35 to a 20g and have been pleased with the difference.

For a proper 400 you need to start looking at the higher end Scoobyclinic or MD 321 series turbos.

HTH

Andy Stevens

I made 398hp on a forged 2.0 litre, MAFless ESL, 650cc injectors, decat, induction, sti3/4 heads and V power on the Zen and APT dynos.

If you don't make 400hp on a 20g, you will with 20% meth. It was a little laggier than a 16g.

LewisScoob

iTrader: (5)

I had an SC38 on my version 6 STI RA with nismo 555cc injectors and HDI GT2. It made 395hp.

As above, you won't reach 400 with any of the VF's mentioned.

Turbotits

iTrader: (2)

18 or 20g would be my choice. With a little meth. Mine on an 18g with 20% meth made 401bhp last week. The avs heads on the newage help though

johnlogie

iTrader: (4)

I made 370 on an 18g , v5 sti bottom end, uk heads, 555cc injectors, 10% meth.
Turbo might be for sale

Henrik

iTrader: (5)

shameless plug: https://www.scoobynet.com/subaru-par...-td05-20g.html

On a non-avcs car you'll probably need a bit of help from meth / e85 to get to 400 on the td05-20g, at least in my experience, but on the other hand the 20g is hitting 1 bar at 3100rpm anyway on a new age wrx, which gives a really good power band (almost 4000 usable rpm on a wrx, which is not bad). With E85 mix, I seem to recall that it spooled just before 3000 rpm, as you can run other ignition settings (I think )

Boost luver

iTrader: (3)

Was that on a 16/20g andy? (ps did you get my email regarding the esl)
Thanks fit the replys guys, if I don't get 400 I'm not to bothered but I would like more mid/top end as I feel the power drops by 5800-6000rpm...
Also what make of injector would I benifit from can I get my yellows done to a bigger cc? What would be my cheapest option if there is one..

Regards

Andy Stevens

That was a 20g. Cracking turbo, also had another one that did 425 with 20% meth. You can get the yellows modified to flow a lot more, which is cheap but they come out at about 900cc.

No email received, can you resend?

Cheers

MrNoisy

iTrader: (28)

You'll never get 400 out of a 16g mate. Again, about 360 is the limit on those and that's in special cases. A really good 18g will get near 400 as posted above. I've heard people say the Harvey and SC ones often do it.

If you go for a 20g, you'll have pull all the way to the redline.
However, if you can source a decent billet or ported 18g (like the ones above) you will have the best of both worlds as you get the quicker spool up and the extra mid range; just slightly less at top end I believe.

Lateral can modify your existing injectors IIRC; not sure but they may do an exchange basis for existing too.
Best bet is pick up a set second hand. 650's should be enough to get you to 400; 800's or 900's would be overkill unless you're planning to go bigger later.

Boost luver

iTrader: (3)

Thank you for the information really helpful would a 18g be on the td05 turbo still? Would the 18g pull upto 7000rpm?

What make injectors am I best getting or does anyone no where there is done 650cc

Shmerman

iTrader: (14)

The 18g would still be on a td05 if bought from the suppliers mentioned above.

I would pull all the way to the red line also.

What no one has mentioned is that if you bought second hand injectors you would be best having them cleaned and flow tested.

If you go for lateral moodifying your injectors they will be exchanged with a set that have already been cleaned, flow tested and have been flow matched.

Turbotits

iTrader: (2)

https://www.scoobynet.com/showthread...9#post10769069

a recent graph of mine for an 18g with 20% meth

Henrik

iTrader: (5)

wow, awesome graph!

almost makes me want to keep my 20g and try it with 20% meth also on the 2.1

Turbotits

iTrader: (2)

Can only try it. Should be great on a 2.1.

MrNoisy

iTrader: (28)

If you buy injectors from another car the likelihood is that they will already be matched as a set.
Cleaning etc apparently can add as much as 1-2bhp.
Not really worth it IMHO unless you're very uncertain as to the seller. Or just buy some from Lateral and be done with it.

ShotgunUK

iTrader: (9)

Just browsing through the threads as you do and saw this from MrNoisy:

"Oh, but on standard 4 pots you'll cack your pants when you try and stop, so BRAKES."

Excellent point but made me lol the way you phrased it