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Old 07-31-2005, 09:11 PM   #1
Bud Brown
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Default i am about to boost my '97 legacy GT...

hey guys, i am about to boost the legacy so i was wondering....

do i have everything or am i missing parts, and if i was to boost more, what would i need to replace with stronger parts? (EJ25)

I currently have...

- T3/T4 Turbo
- 2.5" Up-pipe and Catco Hi-Flow Down-Pipe
- Intake & Charge Pipe
- TMIC Intercooler
- Turbo Mounting Bracket
- Fuel Pressure Regulator
- Oil Pan with pre-tapped oil return
- Oil Lines (braided lines)
- J & S Safegaurd Individual Cylinder Knock Protection
- VC2 Voltage Clamp
- 4 NGK Hi-Performance Iridum Spark Plugs
- Vaccum Lines

thanks in advance!
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Old 07-31-2005, 09:57 PM   #2
Wedge
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Changing the fuel pump?
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Old 07-31-2005, 10:10 PM   #3
Bud Brown
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Quote:
Originally Posted by Wedge
Changing the fuel pump?
should i? i mean would it be a needed part, or just if i just wanted to push higher psi than maybe 5-8?
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Old 08-01-2005, 02:19 AM   #4
reddevil
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goes 12.387 @ 116.5

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An upgraded fuel pump is $100 ish. All I know is the old stock ones suck on corners, which means you might go a tad lean around a corner, bad news for a savings of $100.
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Old 08-01-2005, 10:56 AM   #5
Matt Monson
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reddevil,
Actually, that is not so much a function of the pump, but of the single pick up and a saddle bag bladder.

Regardless, a new Walbro runs like $85, and used ones can be found in the classifieds for $50 or less. I would do it if it were my car...
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Old 08-01-2005, 12:08 PM   #6
reddevil
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Matt,

All I know is my old one was bad even with 1/2 a tank. When I upgraded to the Walbro, I used the parts off the old one and havent had a problems since.
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Old 08-01-2005, 02:40 PM   #7
Bud Brown
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ill go for a new one, i thought they were alot more than that, would i need anything else? i guess i'd need a fuel controller of some sort, like a s-afc, correct?
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Old 08-01-2005, 03:56 PM   #8
Wedge
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If your car is MAF based, you shouldn't need to worry about that VC2 clamp. Like you said, just run an SAFC. Also, get the fuel pump, if you can't find a Walbro, then for the amount of boost you are planning on running, get at least a WRX one. Finally, don't worry about 'iridium' plugs, standard NGK copper plugs work excellent, maybe even better than iridium/platinum plugs.
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Old 08-01-2005, 04:28 PM   #9
Bud Brown
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so in the end, how much boost can i safely run on stock internals, with the parts shown above, a stronger fuel pump, and a s-afc? if i was to boost a little higher than what the motor can handle with stock internals, what would i need to replace to do it safely?
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Old 08-01-2005, 07:15 PM   #10
Wedge
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Upgrade the pistons, to something that will net a lower compression.
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Old 08-01-2005, 07:45 PM   #11
reddevil
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Unless you get some sort of EM to pull timing, 4-5 psi is the max you can safely boost with your compression. If you can pull timing and always run 92-93 octane fuel, then add a few boost points. But after that I predict broken ringlands. I have broken my share on a 2.2 motor at 7psi and 9.5-1 compression because I had no EM and ran stock NA timing advance.
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Old 08-01-2005, 11:12 PM   #12
Bud Brown
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Quote:
Originally Posted by reddevil
Unless you get some sort of EM to pull timing, 4-5 psi is the max you can safely boost with your compression. If you can pull timing and always run 92-93 octane fuel, then add a few boost points. But after that I predict broken ringlands. I have broken my share on a 2.2 motor at 7psi and 9.5-1 compression because I had no EM and ran stock NA timing advance.
whats "EM" stand for?
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Old 08-02-2005, 11:25 AM   #13
Jaxx
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engine managment

+1 for not needing the voltage clamp
+1 for the walbro
+1 for some sort of timing device (ITC)
and i hope you meant rising rate FPR -the 4 to 1 iirc
good choice on the j&s
also consider a boost and fuel pressure gage
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Old 08-02-2005, 12:10 PM   #14
Bud Brown
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So my final laundry list would beeee.........


- T3/T4 Turbo
- 2.5" Up-pipe and Catco Hi-Flow Down-Pipe
- Intake & Charge Pipe
- TMIC Intercooler
- Turbo Mounting Bracket
- Fuel Pressure Regulator
- Oil Pan with pre-tapped oil return
- Oil Lines (braided lines)
- J & S Safegaurd Individual Cylinder Knock Protection
- VC2 Voltage Clamp
- 4 NGK Hi-Performance Iridum Spark Plugs
- Vaccum Lines

**PLUS**

- Walbro Fuel Pump
- Greddy E-Manage (Corrects Fuel & Timing)
- Boost Gauge
- Fuel Pressure Gauge
- Air/Fuel Ratio Gauge


and then what is the best way to lower compression? pistons? and what injectors should i run?
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Old 08-02-2005, 09:10 PM   #15
Jaxx
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to save you some $$ do not get the voltage clamp plus there is one built in to the emanage
and the air fuel gage (from a narow band sensor) is totaly useless they won't read below 13.2 which is way above what you are going to want to run ...

an innovative lm-1 on he other hand is a great choice but you won't need it after yo get her tuned
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Old 08-03-2005, 02:42 PM   #16
Bud Brown
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so with all these extras i am looking to spend maybe two grand?
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Old 08-04-2005, 09:54 PM   #17
Bud Brown
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bump bump
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