Engine/Power - EJ20T (pre-2006 WRX and JDM) There is replacement for displacement, it is forced induction - OEM 2.0 liter turbo engines in the USDM WRX. 90-94 Legacy Turbo EJ22 turbo engines can also be discussed here.

What mods do I need in order to get more lowend and midrange power?

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Old Feb 12, 2003 | 11:36 PM
  #16  
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From: Longing for my ol' white '02 WRX :(
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Originally posted by BlueDemon
Get an Uppipe before you do any Higher Boost..... it's not worth the possibility of High EGTs destroying your Cat---->Turbo---->Engine (in that order)

Oh, and ECUTECK is not just marketing......... you get your ECU reflashed for EVERY ounce of power that your car can take........ and it's SUPER Safe. (MUCH better than just upping the boost and making your ECU pull timing......)

Blue
BlueDemon, I do not necessarily disagree with you... remapping does good. But its not necessary for the midly to moderately modified car. Its just a $750 gimmick at that point. You could spend that $750 much more wisely. Now you got TD05 GReddy kit? You got a T66? You've got no cats too? You definately need different than stock engine management. I have a local friend who;s running no cats, header, up and down pipes, hks hiper, stock turbo, fuel and no ECU changes and a manual boost controler. He ran 12.7 and no engine problems. That's about $2000... vs. getting around the same power for well over $4000 at shops that sell "stages" with ECU mapping.

Do I think those shops don't know what they're doing? Nah, they're smart guys. But they're also trying to make a buck too :-/ But hey, there are shops that'll happily sell intercoolers to guys w/o a turbo... nice, eh?

jason

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Old Feb 13, 2003 | 06:19 AM
  #17  
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Originally posted by mmboost
I have a local friend who;s running no cats, header, up and down pipes, hks hiper, stock turbo, fuel and no ECU changes and a manual boost controler. He ran 12.7 and no engine problems.

That's a good time for the mods involved and money spent, Jason. Does your friend use an EGT (exhaust temperature gauge) to measure temps during high gear under full-throttle?

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Old Feb 13, 2003 | 09:50 AM
  #21  
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From: Longing for my ol' white '02 WRX :(
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Originally posted by Wingless Wonder

That's a good time for the mods involved and money spent, Jason. Does your friend use an EGT (exhaust temperature gauge) to measure temps during high gear under full-throttle?

Yeah, incredible... I didn't believe him at first either. Its equally incredible that he's not using an EGT. I've been bugging him every time I see him to get one so we can see what the EGTs are.

However, something to consider: He swears up and down that his ride has been rock solid... just like many TurboXS or Vishnu stage owners. He's never experienced perceptable timing retardation or detonation. Now, there's always the possibility that something bad is happening that he's not feeling/hearing. But then, at least, the knock sensor would pick up anything worth hearing, right? He'd throw a CEL or timing would retard, right?

The only bad side effect I can think of then is this, that he does have higher EGTs but not enough to cause serious problems that should be detectable anyhow, by him or engine sensors. And any time you make modifications, like him or Turbo XS or Vishnu, you are going to raise EGTs. Its just a matter of control. Some how, it seems, he's done that.

jason
Old Feb 13, 2003 | 10:14 AM
  #22  
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From: Longing for my ol' white '02 WRX :(
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Originally posted by BlueDemon
And I don't disagree with you either..... Reflash isn't something everyone needs......... but then again...... if you want PEAK performance from your Stock Computer, than the Reflash is the only way to go.
That's what I'm getting at though... I'm talking about relative measurements here.

A mildly modified car with a reflash vs. the same mods with an EBC. Let's say both tuned as perfectly as possible. Lets call the power differential X.

Now take a highly modified car with a reflash vs. the same mods with just an EBC, and to be fair, an AFC. Lets call this power differential Y.

Even if we normalized X and Y we'd still find that Y is far larger than X. Therefore power Y produce by a reflash is far more cost effective than when X is produced.

I do not deny that you might be able to get peak performance with an ECU reprogramming. But what is that actual benefit at different modification levels? Is it enough to justity an exrta $400?

What I'm amazed at is that my friend is using an MBC! Maybe he just got the "lucky car"


jason
Old Feb 13, 2003 | 01:29 PM
  #24  
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From: Longing for my ol' white '02 WRX :(
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Originally posted by BlueDemon
Personally, I'm going to go with the Reflash, because it still allows the computer to learn and adapt.

But yes, you can get very good times without tuning......... 12.7 is a little bit too fast for those mods...... but then again, if he's a really good driver, I suppose anything is possible.

Blue
The computer still learns if you have an EBC thought. It has the MAF and O2 and EGT sensors.

I used to think 12.7 was too fast for those mods too... but do you know anyone else who has that setup? I do not.

jason
Old Feb 22, 2003 | 11:12 AM
  #26  
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Don't forget about Vishnu's EMI adaptor.

For about $200 second hand it makes any MBC safe. No more EGT worries.

I have the EMI + Joe P MBC and I think it's a great combo. I don't have the funds to go all out so until then I am enjoying 15.5 psi through all gears safely.

Suspension is done for now, next will come StopTech's stage 1 kit followed by up-pipe and cat back (probably ScubySport).

Enjoy!



Drew
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