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.

Engine feels constipated

Old May 16, 2004 | 03:40 PM
  #2  
Choku Dori's Avatar
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Yep, the stock turbo starts running out of breath at a little over 5k rpm. It's what we get for boost onset at 2500 rpm Nothing to be worried about.
Old May 17, 2004 | 12:03 AM
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Car Info: Mazda Protege '02 (Wishing protege has AWD and a H6 twin turbo)
Acutally there is a method i'm familiar with but i'd never try it on my own. Its called sequential turbos where one really small one handles the low end boost and shuts down to make room for the bigger one at higher end boost. (neccessary? no..)

Honestly in a race most people don't launch at under 3.5k so bigger turbos aren't a real problem in the end. If your worried your turbo isn't spooled up just rev it up nice an high until the light is green

But i am not replacing your clutch or transmission if you decide on dumping it at high rpm
Old May 17, 2004 | 03:31 PM
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Originally Posted by RoadSpike
Acutally there is a method i'm familiar with but i'd never try it on my own. Its called sequential turbos where one really small one handles the low end boost and shuts down to make room for the bigger one at higher end boost. (neccessary? no..)
That's bascially the system that had on most of the twin turbo Japanese cars of the '90s: Z32 Fairlady (300ZX), Supra TT, FD3S RX-7, etc.
An alternative are some of the aftermarket turbo's from IHI like the VF35 or the new twin-scroll models; they have good low-end pickup and make very respectable top-end power. Of course, I'm way to broke to afford any of this stuff
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