Domino

0-60 in 4.8
1/4 in 13.1

course i dont think my uncle could launch perfectly...

what would it take to beat him in a 2003 WRX sedan?

VIBEELEVEN

iTrader: (2)

fp, pe or gt30

silentbob343

good 0-60, but the 1/4 isn't too scary. You would be close with a stage 4 WRX, VF30/22/34/39 etc.

With a Green/SZ49 you should be in the low 12s witha proper tune on pump gas and same thing with the 30. I don't se much reason to with the 30 over a green/SZ49 as it'sa rotated mount and a bit more complicated install and should offer "about" the same peak power. I haven't seen too many GT30 dyno plots as many go for the green/SZ49 and if the go rotated mount it's usually for the GT35. Perhaps the GT30 has a better power band, quicker spool up I don't know. I don't want it to seem like I'm discouraging the GT30 I just don't know the adavatages it has over the common non-rotated mount offerings

Def over at NASIOC is cutting 11.3@125 on his SZ49 on race gas, but he also has the nice V7 Spec-C EJ207 motor. Like I said a properly tuned VF series turbo and good driving should cut you upper 12s-low 13s. I know that seems like a large gap, but it really depends on the tune and your driving ability. Oh and the PE series turbo would work as well.

A good driver should match that AMG time with a stock STi and a good driver can hit 12.7 on a TBE and tune STi.

Here are some graphs Def made:

Again these are on 207s and different cars. Every car is different and every dyno is different so take these with a grain of salt. Again no GT30 so I can't say how it would do. One thing to remember is that people run different time with simialar setups You have guys running 12s with the green/SZ49 and then you have Def running 11.3@125. So when I say you should be able to keep up with a his AMG on a stage 4 I'm making some assumptions that you might not want to make. Also worth noting is that both the green and SZ49 are 8CM and not the tradtional 7CM.

Oh and on a side note When Def tracked that car after the JDM swap it was doing low 12s with the stock twin scroll VF36 which he has also plotted on the graph as well.
Though by his own admission he claims to have had a factory freak. If it were me I would've kept the twinscroll setup as 1/4 mile isn't to important to me, but doug wanted more power . The guy under the you column is running a green; "on 93 octane with a externally gated SZ49 he got 361whp and 327lbs of torque outta my car on 20psi." Def was running the VF36 at "EJ207, and dynoed 320 whp / 273 wtq @ 18 psi......I was running a 100% OEM manifold, uppipe and turbo. Not touched or modified in anyway... AND I wasn't massively overspinning the thing. 18 psi is what the turbo was designed for, and thats what I ran it at." Alos of note is that Def is running a 5-speed dogbox and thus has less shifts than the STi guy. Perhaps the green guys, dyno is reading a little high or maybe Dougs/Def's dyno reads low? Who knows, but do realize YMMV-your milage may vary.

Some tweaked WRXs from PR running very fast time and very modified. These aren't you avg 1/4 mile times and as one NASIOC member said "That makes me question the laws of physics in PR." LOL

Domino

damn, dude...thanks for the info.

Im really not a 1/4 mile person at all, but I just wanted to school the AMG, and so it looks like I'd ideally lean towards a twin scroll for the driveability and torque. Those are the Vf36 and VF37 correct?

silentbob343

Yeah, but you need more than just the turbo. You will need:"twin-scroll parts: exh. Manifold, up-pipe, downpipe, midpipe, exhaust gaskets, oil pan, oil pickup, oil dipstick, small oil filter, turbo support bracket & turbo hoses." As quoted from the rallispec website, they sell the RST-0495 Twin-Scroll Conversion Kit w/o Turbo for $1847 and the VF37 Turbo from them is IHI-VF37 IHI Twin-scroll Turbo Assy. $1684.

Pretty pricey, but if you play your cards right you can get those parts much cheaper used from various importers. Their are after market twin-scroll turbos such as the PE1825, think twin scroll 1820, and the fairly large GT32. VF36 uses ball bearings and the VF37 does not.

I think for everyday drivability a twin scroll setup would be nice, but it'll take time or money to get it setup as those setups weren't offered in the US, time spent locating the parts for a reasonable amount or money to buy them new from rallispec. Guy over at NASIOC bought the whole twin scroll setup off a friend for $300. It's off the turbo legacy and uses a twin-scroll TD04 and that would be a damn nice autocross setup, very quick spool. I've heard you can use the USDM STi oil pan as it's made to be "twin-scroll" friendly, but you might want to research that a bit.

Here is a thread that Def started back when he had a VF36 and a VF37, he was going to send the VF37 to Jerry over at deadbolt enterprises to have it made into a PE1825 clone, the PE1825 costs $2000+, but he sold it off before putting it on his car and we never found out how much power it would have made.

PE1825 clone:
http://forums.nasioc.com/forums/showthread.php?t=610875
TD04 Twin-scroll:
http://forums.nasioc.com/forums/show...04+twin+scroll

Just remember Def had the 207 STi block with AVCS and the EJ205 WRX block doesn't have AVCS. Good luck with whatever setup you choose and find a good tuner.

www.rallispec.com
http://www.gr8wheels.com/jdmimporters.html
http://www.gruppe-s.com/ can import stuff for as well
There is also a place in texas that imports a good bit of JDM Subaru stuff, but I can't remember the name right now.

Domino

sweeeeeeet! thanks for all the info man! I did know about the conversion you have to do...and yes, it is damn pricey. Itll pretty much be the last power upgrade Ill ever need. Little tuning from Ed@EQ and Ill be set!

I dont think itll hurt to do a 6K dump just *once* :-p and thats all itll take to school the AMG with maximum embarrassment.

Ill repost in (sadly...) about a year when I stop dreaming and get all the parts together!

Thanks guys
-D

dug-e-fresh

iTrader: (-1)

Just for clarification, all 5 plots were Dynapacks. 2 different ones, both in Maryland.

The VF36, SZ49, Red, and GT35R were all dyno'ed on Turbo Xs's Dynapack (Gaithersburg, MD). The SC61 was dyno'ed on Agile's Dynapack (Cockeysville, MD).

Some regard Turbo XS's dyno as a high reading dyno... but my experience real world has ALWAYS jived with the power I've made on their dyno.

Sooo... in my experience, maybe it reads higher than other dyno's but to me it just reads more RIGHT than other dyno's

def

impreza25rstn

i got owned by an amg55. he ran like 11.6 1/4 mile. I never saw one of those go like that before. I thought I had that race in the bag. I ran a 12.3xx

silentbob343

While it could've been a tweaked CLK55 it was most likely one of the higher end AMG models, i.e. CLS55, CL55, CL65, SL55, SL65.