If your really tight on money, then you can do the MPFI swap, get a used intake off someone here on HT or build you own, get a chikara header, and pacesetter exhaust.
Some people will tell you not to get the pacesetter. but on a tight budget, it is the best way. You could spend about 100 bux more and get a dynomax muffler and have a shop build a custom setup. I plan on doing that once I get to a certain point with my car, or if/when the pacesetter falls apart.
With all of that you should notice a much better response. You could also get a nice cam for the motor fairly cheap, or just upgrade to a stock SI cam.
1988 CRX HF, W/ D15b SOHC VTEC, and Si tranny
1976 Datsun 280 Z L28T
1971 Datsun 240 Z ITS Racecar
97 Integra Injen short intake,USDM Type R Header, Greddy PE Exhaust, Carsound Cat,Crower 404 cams, p&p, safc, Neuspeed Sports, Type R Front Strut Bar, DC Rear Tower Bar, Type R Rear Sway Bar with BSQ's mounting kit---putting it back to stock..
90 CRX B16A-I/H/E, CS cat, Skunk2s,ST Sways,slotted rotors,Tok 5 ways,CTR Cams,ES Master Set-sold
96 Honda Nighthawk 750
96 Ford Explorer Sport 2 dr
Bench 430x1 new http://images.honda-tech.com/set1/smile/emsmilep.gif oww my joints..
MPFI will probably be your best bet. I picked up a manifold with everything (minus injectors) so all I need now are some of the plugs from the Si harness, the '89 Integra ECU (since I'm upgrading to DOHC ZC soon) and the stock fuel injectors (I have 440cc DSM injectors for my turbo project but can't use them right now). So far it's cost me about $60 including shipping.
BTW if anyone has the things i need for sale hook me up!
pop the hood open and unscrew the 4 screws on intake mani where the DPFI is. Then i think theres 2 screws that hold a gold plate that restricts air. Take it off, i dunno if it will really give you any gains but you can hear the butterfly open and close when you hit the throttle
Honda and the Honda marquee are registered trademarks of the American Honda Motor Company, Inc. Neither American Honda Motor Company nor its subsidiaries or affiliates shall bear any responsibility for Honda-Tech.com content, comments, or advertising. Honda-Tech.com is not affiliated with American Honda Motor Company in any way. American Honda Motor Company does not sponsor, support, or endorse Honda-Tech.com in any way.
Copyright/trademark/sales mark infringements are not intended or implied.