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

[Syaoran]

First thing you have to consider is the chance of detonation from running boost on a high compression engine. It's going to be much higher than an N/A, 9.5:1 engine like the 5s-fe.

Once you've made yourself aware of that, you should check to see if what you want is really that. Unless you plan on running 93 octane along with water/meth injection, I wouldn't boost it, not even with a supercharger, since you are so concerned with longevity.

I'd try to find more info about pistons, see if you can find a set with at least a 9.5:1 compression ratio or lower. I don't know of 3sgte pistons are compatible with the Beams head.

Turbo is going to be the easiest way to do it. You can run a piggy back, and change the MAF configuration to a pull-through system, where the MAF is located on the turbo intake rather than the cold pipe. EMS is the best option of course but it's much more expensive and since you're aiming for moderate, then your tuning solution should follow suit as well, it all depends on how the stock ECU behaves. With a piggy back you can also keep the VVT-i, which, believe me, will make a TON of difference in total horsepower.

The Beams is a rev-happy engine so you could choose to go big turbo for big power, or smaller turbo for drivability. I wouldn't be afraid to put a GT35R on there with a 7000+RPM redline...

Some quick thoughts/suggestions for you.

This post has been edited by Syaoran: Jul 6, 2012 - 11:08 AM