Boosting Beams, Plans and improvement on those plans Options

[ricochet1490]

I' ve been considering this as my build progresses and it's something I want to do after I get the car on the road.... but something I want to do nonetheless. I don't want a terribly high investment but 200+ WHP would be a great feeling.... and this is where I'm looking for expertise outside of mine....

Internals are remaining factory
Looking at going with a supercharger and I don't really like how "cluttered" the engine bay looks with a turbo .... it also isn't as "peaky" and should be more smooth to the power
My initial thought is that I want to keep the stock ECU so I'm assuming I have to stay at about 5psi or so for this to happen?
I'm frankly not sure what the stock beams ecu can handle as far as boost is concerned. Any thoughts?
What are my best tuning options? I want something that is tunable and the toyota ecu not be able to change it (if that makes sense... these things are smart)
I want to keep the CR stock as well. With a proper tune, and the low boost numbers it shouldn't be a big deal I don't think, just gotta watch for knock
Keeping the boost low like that, I'm HOPING that the stock fuel pump is adequate to handle the increased load...
More importantly the injector size of the BEAMS has been debated. The books say 340 cc while the bench test hat the guy did on Daniels injectors reported 400 cc flat. If they are 400cc, I don't think I'll need to upgrade those either... but again, I just don't know.

My biggest questions at the moment are involved around ECU and the tuning, but any and all help would be appreciated

[delusionz]

a regular t28bb non-rs would be best bet for a turbo beams, the one on the jdm s15 spec-r or in garretts catalogue "gt2560r"

you really need turbo (low) compression for the gt28rs (gt2860rs) as these things are happy to spool up 22psi faster than your foot can sink to the floor, and thats not the kind of boost you want to be running on a high compression beams motor, so you may aswell save yourself some lag by getting a turbo thats more efficient at lower pressures like 7-10psi which is precisely how the jdm sr20det turbo operates.

that plain "t25" size turbo is more suited to a 1.6-1.8L engine running 7psi, to boost peak hp around 200hp which is already what your beams motor makes so provides Nothing at all.
the idea of this turbo is to give you the power and torque of a high performance 2 litre NA in a small lightweight 1.6 package.

when I chose the turbo for my engine i did alot of research comparing compressor maps, dyno plots. i knew exactly what my goals were in terms of peak power potential, how early torque became available, i had to fit within the limits of factory tuning, i had to have a turbo that spooled early to give me torque outside of (before) the natural 3sgte engine torque band (4000-6000) and also not die off after (6000-7000), and also fit in with my no lag factory w2a setup but not outflow it, etc and while i'm happy to rave about what a great turbo the gt2860rs is, its not the right choice for every 3s setup

This post has been edited by delusionz: Jul 27, 2012 - 11:05 AM