Quote:
Originally Posted by 2forme
Keep in mind that A-A intercoolers also decrease the efficiency of the stock "paper-thin" radiators as well. Consider your goal as 250whp (which is what I think this car should have come with stock). To do that on a Centri, you're looking at 10psi on the "Type B" charger design. That's a lot of pressure in an already high pressure motor. Until we can get owners past the "ZOMGZ I"M BOOOOOSTEDDDD YAYYYY" phase, we won't get a lot of credible third party testing and logs. And no, I don't consider the rosey colored reviews by Gem as being credible yet.
Summer is just around the corner and I have a feeling we'll see what effects any of these kits have on the motors.  |
I agree about the radiator and A-A intercoolers and I didn't mention anything about the radiator because personally I think the stock radiator is weak sauce so upgrade should be priority for anyone going forced induction. Even by limiting air flow with an A-A, more fin surface area would be beneficial.
As far as the manifold pressure I am not too concerned with it because manifold pressure is only part of the overall equation. I do understand where you are coming from though. The static pressure is pretty high for sure but it really comes down to flow and efficiency of the compressor at those pressures. On top of that the actual effective compression ratio during TDC and full fuel injection. This is a whole other topic that again appeals to me with this particular method of forced induction on this particular engine for longevity. I need to dig up the Ver 2 compressor maps again to see where this setup is sitting on the efficiency islands at these pressures and rpm.
Gradual boost creates gradual cylinder pressure increase and the less shock you create the better off the stock guts should theoretically hold up over time. The FA20 has already shown to handle pretty ridiculous pressures/forces. Me personally I am not scared to blow an engine up but for the majority of owners this is a serious factor to consider. If you can apply the power with a little more gentle manner well it certainly can't hurt. To your point though just how efficiently is it actually doing it though......