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Stock 1JZ, How to Maximize HP

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Old 09-20-07, 06:01 PM
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SC3005SPD1
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Default Stock 1JZ, How to Maximize HP

Like the title says.... what can I to do the stock set up to maximize the power? For instance, nitrous, methanol kit, exhaust, ect. All I have now is 3" dp, no boost controller, smic, stock cat, 2.5" 14829 magnaflows. What you guys suggest doing? (besides going single)
Old 09-20-07, 06:09 PM
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SC300Dori
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Bigger single turbo, bigger injectors , bigger fuel pump
Old 09-20-07, 06:13 PM
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LSEGHATCH
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He stated that he wants to keep the stock setup. Here are a few things you could do:

1-Boost controller - turn that ish up
2-FMIC or Front Mount Intercooler
3-3" or 2.75" turbo back exhaust with high flow or deleted cat. Go 3" if you plan to swap out the twins.
4-Intake to turbo's
5-Intercooler Piping
6-Port stock turbo's and/or intake and exhaust ports
7-Larger throttle body

That's really about it before you have to go and get engine management, even all that will need some form of tune or that's what would be reccomended.
Old 09-20-07, 08:13 PM
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SC3005SPD1
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Originally Posted by LSEGHATCH
He stated that he wants to keep the stock setup. Here are a few things you could do:

1-Boost controller - turn that ish up
2-FMIC or Front Mount Intercooler
3-3" or 2.75" turbo back exhaust with high flow or deleted cat. Go 3" if you plan to swap out the twins.
4-Intake to turbo's
5-Intercooler Piping
6-Port stock turbo's and/or intake and exhaust ports
7-Larger throttle body

That's really about it before you have to go and get engine management, even all that will need some form of tune or that's what would be reccomended.
1. Boost controller.... thought about it. I was advised to leave that alone cuz the twins will blow and da car will overheat.
2. How can I run the intake to the bottom of the bumper to make it a get "cold" air
3. The q45 throttle body is what you guys use right?
4. Maybe I should start with a fmic... 2.5" piping or 3"?
Old 09-20-07, 08:41 PM
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Blizzy
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FMIC, intake, and exhaust would wake the car up for sure. Running the boost to 10-12psi through a boost controller is still quite safe, even on the shady JDM turbo bearings.

A good turbo shop may be able to rebuild the twins with better bearings to run more boost, but you are definitely better off spending that money on a 61mm turbo and a single manifold at that point.
Old 09-20-07, 09:32 PM
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SINGLE TURBO....you can spend about 4k on the setup and be the happiest sc owner ever!!! its easy, add all that other stuff up andit equals about 4k, you should just go with the single, even a little single youll be happy
Old 09-21-07, 09:48 AM
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rickj
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The most I've got out of twins is 310whp and 330whp torque with the automatic tranny.

The mods were:
3in downpipe and exhaust, stock y pipe.
20psi boost.
93 octane.
SARD reflashed ECU.
Retarded exhaust cam 2.5 degrees.

Everything else was stock. If I had a FMIC i could have done alot better. At 10psi it was making 292whp.

But who cares, stock twins suck. Go single.
Old 09-21-07, 09:49 AM
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Rexn30
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20psi? No way those stock twins handled that?
Old 09-21-07, 09:54 AM
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1JZ300
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no way.....not 20psi on stock twins.....i dont even run 20 psi on my single turbo......anyway, going single would be your best decision ever with your car
Old 09-21-07, 09:59 AM
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rickj
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Who told you that lie?
Old 09-21-07, 10:34 AM
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got_trd
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Originally Posted by rickj
Who told you that lie?
oooh man... the fun begins again...
Old 09-21-07, 10:39 AM
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rickj
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Originally Posted by got_trd
oooh man... the fun begins again...

The blowing up of twins at over 1 bar rumor has been proved to be wrong for years now. I know you're having fun with the BMW, but get with the times

If your going to spit the turbine blades out the muffler, its going to happen no matter what boost you run at, it's a fact of life with 15 year old ceramic blades.
Old 09-21-07, 10:45 AM
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tr_racing
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Originally Posted by rickj
The blowing up of twins at over 1 bar rumor has been proved to be wrong for years now. I know you're having fun with the BMW, but get with the times

If your going to spit the turbine blades out the muffler, its going to happen no matter what boost you run at, it's a fact of life with 15 year old ceramic blades.
What you mean by split de turbine blades out the muffler????

Kevin..
Old 09-21-07, 10:53 AM
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plex
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Originally Posted by got_trd
oooh man... the fun begins again...
Ditto............
Old 09-21-07, 10:54 AM
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So i guess best bet is to go FMIC, finish my exhaust and use the rest of the money to go single.... Im already addicted to the boost and I need more! The closest I can get to high 3's with out breaking the w58...


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