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Old 11-27-2005, 07:54 PM   #1
Optimus Prime
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Default Ultimate Upgrade path for the EJ257.

This is just my opinion from observing this board since the STi came out. Based on the dyno, the timeslips and posts from the community here, I came up with what I think is the ultimate upgrades list. Feel free to agree, disagree, or just add comments.

- Exhaust any 3 inch exhaust will do.
- Downpipe- a good 3inch bell mouth cause they seem to fit the easiest.
- Cobb AccessPort with ProTune (cause you could sell it if need be and it will pass OBDII)
- PE Injectors that have been cleaned and checked
- Walbro fuel pump
- Fujitsubo equal lenghts...why? Cause they use the stock uppipe (next part on the list) and the equal lengths seems to aid in the cooling of the motor. Of course they should be wrapped or coated, whatever you like.
- Ultimate Racing Externally Gated up-pipe. Since, you got the Fujitsubos, you can bolt this on without problems.
- Tial Wastegate...probably a 44mm, but something
- Perrin sized FMIC. (I'd even go ssautochrome to save some cash) I think the DR750s are just too big.
- FP Red Turbo. From reading Proven Power over and over, the GT rotated turbos make great power, but I think they work best on an inline motor where they are closer to their energy source. It seems like with the boxer motor they loose spool too quickly between shifts and that's why these rotated kits are in the high 12s-low13's or require nitrous to spool them to make the good times. I also do like the SZ turbos, but the FPs seem to be getting down the track quicker.
-Perrin inlet and intake...cause you'll need the big MAF and the bigger inlet hose for the Red...though I think Samco makes better hoses.
-Crawford block (you pick the one you want). I heard they can't get the 2.2 liter blocks anymore, so I don't know what that means in terms of product, but that 2.8 liter sounds awesome.

I tried to go in order of what you would buy stuff. But I think this is a path you can take without wasting money or trying a bunch of different stuff out. This is just my idea, so feel free to comment.
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Old 11-27-2005, 10:46 PM   #2
02WRX2.5
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What about Tuning?And how mant times?Etc.?
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Old 11-27-2005, 10:54 PM   #3
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ECUtek with a custom tune is exactly the same.
And I would take an Axis motor over a crawford.
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Old 11-27-2005, 11:11 PM   #4
MARKGSTI
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Quote:
Originally Posted by Optimus Prime
- FP Red Turbo. From reading Proven Power over and over, the GT rotated turbos make great power, but I think they work best on an inline motor where they are closer to their energy source. It seems like with the boxer motor they loose spool too quickly between shifts and that's why these rotated kits are in the high 12s-low13's or require nitrous to spool them to make the good times. I also do like the SZ turbos, but the FPs seem to be getting down the track quicker.

Thats some funny shiznt...and also untrue.

Factory location turbos will work for 98% of people....If you want the fastest you get rotated

As far as boost drop off goes....either the tune/hardware need to be fixed or the driver don't know how to drive.

Last edited by MARKGSTI; 11-27-2005 at 11:17 PM.
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Old 11-27-2005, 11:57 PM   #5
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Quote:
Originally Posted by MARKGSTI

Thats some funny shiznt...and also untrue.

Factory location turbos will work for 98% of people....If you want the fastest you get rotated

As far as boost drop off goes....either the tune/hardware need to be fixed or the driver don't know how to drive.
Like I said, everyone has their opinion. And it's true you will need a rotated to be "the fastest". But from the results in Proven Power of track times, they have been below most peoples expectations. And that is not untrue, that has just bee the case for the last few people posting track results from GT-3XR turbos. Remember the post where people were arguing that the only way to get the car down the track was flat-footing it?

Your point about the tune is also important. It seems that only a handfull of tuners have gotten the ball-bearing rotated setups tuned correctly for the track...though most have made the power on the dyno. And I think that it is important to note that if you do not have access to these tuners, you are probably better off sticking with something that your local tuner can have success with.

I also forgot to state that this path is geared towards someone who will use the car everyday and looking to be in the 11's. It's not for a track only car, but something that most of us can use if we want to go all out. I think I should add at the top of my list driving lessons.
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Old 11-27-2005, 11:59 PM   #6
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Quote:
Originally Posted by 02WRX2.5
What about Tuning?And how mant times?Etc.?
Tuning was listed with ProTune. Of course you should retune with every major mod. I would hope people realized that going from bolt-ons to a Red would require a retune, because if they didn't they might want to do some morre research before modifying their car.
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Old 11-28-2005, 12:28 AM   #7
WRXRallyBlue
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What are the FP Reds capable of? Forced Performance doesn't have any specs on their site.
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Old 11-28-2005, 12:47 AM   #8
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Quote:
Originally Posted by Optimus Prime
Like I said, everyone has their opinion. And it's true you will need a rotated to be "the fastest". But from the results in Proven Power of track times, they have been below most peoples expectations. And that is not untrue, that has just bee the case for the last few people posting track results from GT-3XR turbos. Remember the post where people were arguing that the only way to get the car down the track was flat-footing it?

Your point about the tune is also important. It seems that only a handfull of tuners have gotten the ball-bearing rotated setups tuned correctly for the track...though most have made the power on the dyno. And I think that it is important to note that if you do not have access to these tuners, you are probably better off sticking with something that your local tuner can have success with.

I also forgot to state that this path is geared towards someone who will use the car everyday and looking to be in the 11's. It's not for a track only car, but something that most of us can use if we want to go all out. I think I should add at the top of my list driving lessons.
if this is not a track car, whats the need for the external wastegate?
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Old 11-28-2005, 02:20 AM   #9
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better boost metering? less creep?
what do real racecars use?
external ftw.
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Old 11-28-2005, 04:53 AM   #10
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why not a hydra system??? dont people seem to get the highest numbers out of a possible setup
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Old 11-28-2005, 07:53 AM   #11
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Quote:
Originally Posted by xplcitcustmz
why not a hydra system??? dont people seem to get the highest numbers out of a possible setup
Won't pass emissions in most state as it removes OBDII.
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Old 11-28-2005, 08:11 AM   #12
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Quote:
Originally Posted by STi-MAN
if this is not a track car, whats the need for the external wastegate?
Quote:
Originally Posted by 97whitesi
better boost metering? less creep?

.

There ya have it
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Old 11-28-2005, 08:22 AM   #13
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alky injection..btw if you have all that on the car the ecu is the least of worries with the smog guy
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Old 11-28-2005, 09:31 AM   #14
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Crawford R4 with Cosworth Heads and reverse intake manifold
GT35 with 1.06 or GT40
Hydra with alky injection
header back exhaust
WRC style FMIC
dual walbro with PE850's

rich uncle or trust fund
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Old 11-28-2005, 09:57 AM   #15
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Quote:
Originally Posted by Optimus Prime
- FP Red Turbo. From reading Proven Power over and over, the GT rotated turbos make great power, but I think they work best on an inline motor where they are closer to their energy source. It seems like with the boxer motor they loose spool too quickly between shifts and that's why these rotated kits are in the high 12s-low13's or require nitrous to spool them to make the good times. I also do like the SZ turbos, but the FPs seem to be getting down the track quicker.
Shouldn't we also include the APS SR55 since it does fit in the stock location and does spool quickly? You also don't loose much power between shifts and is very streetable?
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Old 11-28-2005, 10:52 AM   #16
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Quote:
Originally Posted by greysave
Shouldn't we also include the APS SR55 since it does fit in the stock location and does spool quickly? You also don't loose much power between shifts and is very streetable?
You could if you want. I just picked my favorites. Plus most of the posts I've seen with the FP turbos performance results were just more consistant.
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Old 11-28-2005, 11:20 AM   #17
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I love my RED.........All depends in how you want the car to respond, I wanted my car to hit hard and fast......All personal preferences.....
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Old 11-28-2005, 05:37 PM   #18
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Also with the 3 inch FP Red you most likely need to remove your TGV's.
How about a BOV? Can you use the stock BPV with the perrin/APS FMIC?

Nick
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Old 11-28-2005, 06:10 PM   #19
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You can send your TGV's to Crawford to get them ported and valve removed for about $275.00. Anytime you're doing a bigger turbo upgrade this is recommended. You can use the stock BOV with the both FMIC's I believe.
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Old 11-28-2005, 07:58 PM   #20
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Quote:
Originally Posted by Optimus Prime
- Fujitsubo equal lenghts...why? Cause they use the stock uppipe (next part on the list) and the equal lengths seems to aid in the cooling of the motor
They use the stock uppipe but this is not a good match - there is a 10% difference in i.d. between the two (Fujitsubo is bigger). Get the headers and get an uppipe...
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Old 11-28-2005, 07:59 PM   #21
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Quote:
Originally Posted by MARKGSTI
:
As far as boost drop off goes....either the tune/hardware need to be fixed or the driver don't know how to drive.

Aren't the STI's that run 10's using to Nitrous to keep these turbos happy??
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Old 11-28-2005, 08:13 PM   #22
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Big Valley also ran 11.0xxx with a slipping clutch and Gadiel in the car no nitrous
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Old 11-28-2005, 10:19 PM   #23
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IMHO the 35R still and will always be the top dog for Turbos...anything larger isnt street practical unless you have a fully built motor. To date the 35R has really been the only turbo (usa) to put a scooby into the 10's. Yeah many have come close but the 35R has done it.

35R would be my vote.


Scoobs
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Old 11-28-2005, 10:51 PM   #24
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Quote:
Originally Posted by scooby-stu
Aren't the STI's that run 10's using to Nitrous to keep these turbos happy??
You don't need NOS to spool a 35r .82...maybe a 1.06.

Last edited by MARKGSTI; 11-29-2005 at 12:20 AM.
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Old 11-29-2005, 01:10 AM   #25
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Quote:
Originally Posted by Optimus Prime
Won't pass emissions in most state as it removes OBDII.

you wont pass emissions with any modifications at all in some states
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