Originally Posted by smakdwn
Not exactly true. Short rams will make more power at a higher RPM. CIA's help with midrange.
When it come's to Short rams, Just "hacking" some piping may or may not help! Pipe diameter and length have a lot to do with power gain. I'm not an expert, I just read a lot
this has been a hot topic since i joined. ha
i guess b-series vtec engines would rather get air in asap rather than take a little extra time/effort getting in cooler temperature air. in and out. hopefully you already know vtec is just the timing of the valves, so more air and fuel combust since the valves stay open for longer. also i already mentioned that there is good airflow under the hood, so the air is decently cool.
for example, on a non vtec b18 engine, CAI's start losing ground to the SRI near the upper RPMs. this is because the CAI cant supply the amount of air needed for that RPM/pipe is too long. since vtec is all about getting air in and out at a rapid rate, it makes sense to slap on a SRI onto a b-series vtec engine. imagine NA b18b and b18c1 engines. at 5000 rpms, the vtec engine will be sucking in more air than the b18b, because vtec allows more air to come in through the valves. i dont know about other engines, but a b18c1 has vtec engage at 4400 rpms. you hear it and better yet feel it. midrange.
there have been one or two tests done on the same car, same day, same dyno with a SRI and CAI that i have seen, and the SRI outperformed the CAI. on a B series vtec engine of course. im sure it varies by engine.
search through HAN, find it. then read your penis off. :boink:
damn, who was it. it was LT when he had his integra or schmoo or one of them smarter guys that said that SRIs outperform CAIs through all RPMs on b-series vtec engines, which sent me to search. then i changed my mind about SRIs and CAIs. for b series vtec engines, at least.
havent had the chance to read over this, in a hurry, hope it makes sense
oh and this is turning into another sri vs cai topic, sorry if i got ppl off track.