I got bored this weekend and started to modify my intake manifold. I took a stock H22 manifold and port matched all the runners, removed the secondary butterflies, removed EGR valve and made block off, and stacked another secondary butterfly piece in. my question, do you think it will improve any? my motor is a h23/h22turbo. also if you have an idea to make it better let me know. here is some pictures:

 

Pictures don't really show much, all I see is stock runners, an EGR block off plate and a broken TPS.

 

i know a couple of people who have done this and gave them some nice #'s

 

seems like it might help a little cause' of the "longer" runners... Dyno it and let us know....