I have a 95 honda civic with a d15 1.5l engine with a short ram cold air intake with 4 to 1 header all i want is an estimate. dont make somthing up lol the car stock has 102 horse power.
i would say that a cold air intake, will increase about 6-10 hp, but that really depends on many things in some cars it doe sn?t make difference at all. The header certainly increases hp, I would say around 10-15 in a small engine like the Civic's. Overall I would estimate about 117-120 hp. But the only way to know for sure, is run a Dyno. Hope this was helpful.
If you are sure its the pipe, and the hole is not where it is joined or threaded, they make what most plumbers call a saddle, its a clamp like device and will do the job. You have to know the OD of your pipe.
If it's leaking out of the stem packing, you can tighten the packing nut - just a little at a time, and with the valve closed. Anything else and you probably have to replace the valve.
For the best answers, search on this site shorturl.im/axQxi maybe 20 at ur crank but u might gain about 7-10 at the wheels but thats better than nothin! but if u want to feel a difference turbo it! and plus gettin headers wont do u that good cause u still have ur stock catalinic converter! my advise get an intake ,headers, catback exhaust,underdrive pulleys(if they make them for ur car) and cut ur cat off and get a straight pipe with what they call a mills eliminator which is for ur 02 sensor so ur check engine light wont be on! might be hard to find someone to do it cause its illegal but if u dont get rid of ur stock cat dont even do anything with ur exhaust cause it wont be worth it
