Intake manifold worth it?

[homeslice0229]

I have a 96gsr with i/h/hiflowcat/soontobeexhaust. Would it be worth getting a new (or porting and polishing my current) intake manifold. How much will it help, what would the gains be. I'm staying with NA, would a new intake manifold be a good next step. My other option was possibly new pulleys. Should I look into manifolds, pulleys or ???. I just don't know what would be best to do to my car next. Thanks for your time

[Spectre927]

I thought I saw somewhere, a skunk2 I believe, that an intake manifold adds like 2 or so hp. I think. All I remember is saying, woh, $300 for that? I've also heard that pulleys aren't worth it. If you're trying to extract every pony possible, then by all means do it. If you want the best bang for your buck, then look else where.

[homeslice0229]

Thanks, I don't even know if I would notice a 2hp increase. I guess that'll save me about 300$

[Macura]

The only reason that a new intake manifold or pulleys would be helpful is if you were planning on going with forced induction. Like was said before you are not looking at much gain from a manifold and the pulleys maybe 2-5 hp. You also dont want to alter the stock manifold to much although some modifications are a good idea. Port and polish yes but stay away from honing and such since they open up the manifold to much and actually slow air movement on a non-turbo. I have a 95 GS-R and dont plan on doing any work to that until the turbo kit and even then the stock intake is just about as good as it gets.

[HondaIntegraXSI]

Porting and polishing your intake manifold is a great idea, but it would be useless without a hi-flow throttle body. may i recomend you port and polish your intake and exaust valve ports,and multi-angle valve job(which is good for about 25hp),and on top of that mill the head about.010 inches and put adj cam gears on it and tune them to your ideas(this is good for about 15 more hp. My 90 Integra XSi has had this done to it, and it makes 207.1 to the flywheel,and it's n/a.

[Spectre927]

Originally Posted by HondaIntegraXSI

Porting and polishing your intake manifold is a great idea, but it would be useless without a hi-flow throttle body. may i recomend you port and polish your intake and exaust valve ports,and multi-angle valve job(which is good for about 25hp),and on top of that mill the head about.010 inches and put adj cam gears on it and tune them to your ideas(this is good for about 15 more hp. My 90 Integra XSi has had this done to it, and it makes 207.1 to the flywheel,and it's n/a.

If anyone wants to join Mr XSI with a RHD, theres one on ebay.
http://cgi.ebay.com/ebaymotors/ws/eB...tem=2442945354 a 96 type R, needs some restoring though.

[got v-tec?]

intake manifold is a great buy! huge v-tec range gain! i got 3.8whp gain!
little less torque when you shift but the hp from v-tec to redline deffinitly makes up for it. (made bigger differance than i/h/e.

[91LSspecial]

i have heard that intake manifold is a good buy but with a GSR and i/h/e i would get a jun chip ECU