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Old 01-17-2006, 02:23 PM   #1
fzturbo
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Default Wich turbo for 400 WHP on 91 octane Gas

A friend wants like 400 WHP on 91 octane gas, setup will be with a Blitz FMIC, inyectors, stock ECU, Apexi S-AFC2 and AVC-R, gruppe s manifold and a 3" TBE. Wich turbo can do this. Someone mentioned me the SZ55 or the Forced Performance turbos.
Any idea???
Thanks.
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Old 01-17-2006, 02:37 PM   #2
pezman04wrx
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How about you tell us at least what kind of car it is? ... Regardless of whether or not it's an STi (and it had better be ) 400whp and 91 octane doesn't compute in the suby world ...

Edit: I have seen a number of STi's with to 400whp on 93 octane, but they usually also have meth/water/alky injection of some sort ... 20g (style) turbo's would be the way to go ...
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Old 01-17-2006, 02:38 PM   #3
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Why is your friend running an afc2 and avcr combo? A tuned ecu will net more hp safer. Tell your friend that he will get no where close to 400 whp short of a rotated 35r set-up...ESPECIALLY with insufficient tuning capabilities of the afc/avcr combo.

Tell your friend to start off with selling the afc. If he is in a wrx with a stock drive line. Tell him he need to save up for 2.5 sti short block. If he wants to hold 400 whp daily for at least 10k miles he should seriously consider swapping in some forged pistons into the sti short block. Then tell him to save up for a rotated gt-35r set-up. (While he is at it, he is going to at least need some r/a gears for the tranny, he would be better off buying an sti transmission...the stock box is a ticking time bomb with that kind of power.). If your friend doesn't mind running some meth injection...an sz55 should get you fairly close to 400whp. I dont know how well the stock wrx head flows, so he might need some porting, valve work, and quite possibly some cams. Basically if your friend has a wrx, he needs to sell it and get an sti.

Once your friend has assembled all the necessities... he needs to buy ecutek, utec, cobb ap, or a hydra...these are all top notch engine management solutions. He then needs to take his car to a tuner who can tune one of the above to custom tune it for him.

If its an sti, an sz55 with some meth should be all that you need to. The stock pistons should last a decent while if your tuner is worth a damn.
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Old 01-17-2006, 03:08 PM   #4
STiLL WILL
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I run an SZ55 on an STi...and I can almost assure you there is NO WAY not even on the higher reading DynoJet dyno's you will be able to hit 400whp on pump 91 with an SZ55. On 91, I was tuned to 375whp on Harman's DynoJet in Torrance with an SZ55, but I honestly wouldn't push it past that level just to hit 400whp with an SZ55 on 91. You will need some kind of water/alcohol/meth injection system to hit that with pump gas---but even then you are raising the octane when you inject something.

...but I have seen 400whp+ on pump 91 on STi's running SZ65's and FPRed's. Remember, it's all in the tuning. A SURE SHOT way to hit over the 400whp on 91 is with a GT35R. My buddy BlingusKahn also is running an FP Red with a pretty built motor in his STi---you should PM him as well. Here's a link to a stock block STi running a GT35R tuned at Harman that hit 425whp on 91:

http://www.harmanmotive.com/Images/g...haseGT35R.html

If your friend has a WRX, he needs to swap out the shortblock for a 2.5L USDM STi shortblock.

I guess what it all comes down to is---

THere are PLENTY ways your friend can hit 400whp on 91 octane, it all depends on how much your friend is willing to spend. The combinations are endless....he just needs to figure out HOW he wants to go about getting to that 400whp mark. Again, tuning is key. Make sure your friend goes to a tuner who doesn't just hit numbers to make you happy---make sure the car is "happy" as well. I've seen too many cars fail from unexperienced tuners who just "hit the numbers" and forget about everything else(driveability, safety, etc...). I can assure you, most of the reputable tuners you will find here on NASIOC will do their best to make sure your friend will get a thorough tune.

-Matt
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Old 01-17-2006, 03:17 PM   #5
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^ If he drives a wrx, he can scratch out the shortblock, he needs the long block unless he is willing to pay to get the heads built.
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Old 01-17-2006, 03:59 PM   #6
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WRX + EJ207 (~$3000) + PPG gearbox (~$5000-6000) + SZ65 or FPRed (~$1600) + miscelaneous (~$2000-3000) = relatively reliable 400whp (~$11,600-$13,600).

Just a ballpark figure.

def
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Old 01-17-2006, 04:02 PM   #7
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Is it me or is this the wrong section for this question?
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Old 01-17-2006, 05:36 PM   #8
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yes on the wrong section..the only way you'd see 400whp on 91 pump or I should say easiest way is with water/alky injection.
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Old 01-17-2006, 05:54 PM   #9
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^^^^^ ditto to the above.

sz60 here with 400whp and alky injection
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Old 01-17-2006, 06:01 PM   #10
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I would do a SZ or a FP RED or 3 inch green along with meth/alky.
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Old 01-17-2006, 06:05 PM   #11
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[quote=pezman04wrx
Edit: I have seen a number of STi's with to 400whp on 93 octane, but they usually also have meth/water/alky injection of some sort ... 20g (style) turbo's would be the way to go ...[/QUOTE]

20G TO SMALL IMHO...
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Old 01-17-2006, 06:05 PM   #12
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<---------------------------------
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Old 01-17-2006, 06:12 PM   #13
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Quote:
Originally Posted by dug-e-fresh
WRX + EJ207 (~$3000) + PPG gearbox (~$5000-6000) + SZ65 or FPRed (~$1600) + miscelaneous (~$2000-3000) = relatively reliable 400whp (~$11,600-$13,600).

Just a ballpark figure.

def

you forgot a bunch of stuff that would bump you up a little bit....
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Old 01-17-2006, 06:14 PM   #14
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It basically comes back to a harsh reality that he should buy an sti(if he doesnt have one).
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Old 01-17-2006, 06:28 PM   #15
Gregar
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Did 415 WHP on an AVO 500 (non rotated), but that was with 93 octane
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Old 01-17-2006, 08:06 PM   #16
fzturbo
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i'm really sorry , its a JDM MY04 2 litre STI. BTW, is safe the water inyection???? and how effective is for this cars.
Wouldn't be too big a GT35R for a 2 litre engine??? i mean, a 4500 to 5000 RPM fullboost would be fine, the car revs up to 7500
thanks

Last edited by fzturbo; 01-17-2006 at 08:14 PM.
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Old 01-17-2006, 08:19 PM   #17
Swine
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Well that most certainly changes things...quite a bit.

Well, all things considering. An sz55 is the minimum he needs to go for 400whp...and meth or alky injection is a must to get anywhere near that number. His best bet by FAR is get a rotated turbo kit and a gt35r...although it is going to take a while for it to spool(I would say between 4500-5000rpm.).

I though the jdm motors revved to 8k?

Meth injection is very safe. A decent tune with meth makeing 400whp is more safe then the same car tuned to 360whp with no meth.

Last edited by Swine; 01-17-2006 at 08:24 PM.
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Old 01-17-2006, 08:41 PM   #18
fzturbo
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Quote:
Originally Posted by Swine
Well that most certainly changes things...quite a bit.

Well, all things considering. An sz55 is the minimum he needs to go for 400whp...and meth or alky injection is a must to get anywhere near that number. His best bet by FAR is get a rotated turbo kit and a gt35r...although it is going to take a while for it to spool(I would say between 4500-5000rpm.).

I though the jdm motors revved to 8k?

Meth injection is very safe. A decent tune with meth makeing 400whp is more safe then the same car tuned to 360whp with no meth.
JDM's here (Chile,south america) rev up to 7500 on STI's and 7000 on WRX's. Where can i get a meth inyection, or are there some DIY systems???
BTW, whats the difference in the water/meth/alky inyections?? do all of them do the same???
thanks.
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Old 01-17-2006, 09:02 PM   #19
Swine
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It seems meth gives you a few more ponies, but is more expensive and harder to source(around $2 a gallon).

I would personally go with a 50/50 mix of water and alcohal(rubbing alcohal, can pretty much find it anywhere). It seems to give 90% of the performance for a fraction of the cost.

http://gruppe-s.com/Subaru/subeng.htm ...click the link. Find the smc alcohal injection kit under Fuel System. That seems to be a decent kit.
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Old 01-17-2006, 11:49 PM   #20
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Port and Polished Td04
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Old 01-18-2006, 03:44 AM   #21
fzturbo
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Quote:
Port and Polished Td04
are you kidding me???
no further comments.

Last edited by fzturbo; 01-18-2006 at 01:11 PM.
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Old 01-18-2006, 04:48 AM   #22
norris639
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Made 415whp on my DR65

This isn't the 415 run but it will give you a good idea
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Old 01-18-2006, 10:14 AM   #23
Swine
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That dr65 would probably be way to laggy for the 2.0lt. Especially with it only reving to 7500.
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Old 01-18-2006, 01:13 PM   #24
fzturbo
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well, please consider when you're posting that this is a 2 litre STI and a big WHP 2.5 setup would be way to big for this one.
One more thing, i was wrong on something, pump gas for me would be 93 octane. (here equivalent to the 97 octane gas)
Thanks, keep replys comin'

Last edited by fzturbo; 01-18-2006 at 01:24 PM.
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Old 01-18-2006, 01:35 PM   #25
dug-e-fresh
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Quote:
Originally Posted by BREWPUBEAVER
you forgot a bunch of stuff that would bump you up a little bit....
like?

def
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