hey g2ic i have a b17a1 installed in my 90 integra with i/h/e and vafc installed but no tune and currently running an obd0 pr3 ecu and i need want more power without goin internal or force feeding the engine what can i do to get more power and quicker acceleration but still have reliability
There is only so much power you can get with bolt-ons.
If you want real power you’re going to have to put in some decent parts… cams, port-matched throttle body, etc.
Something that will make your car ‘feel’ faster may be a lightened flywheel.
But you can only get so much power out of a 1.7L motor before you have to start throwing high-performance parts at it to get the result you’re looking for.
Yeah, he is right, just go with a really good cam, upgrade your injectors and throttle body as get a tune.
How much power do you want?
im lookin at tryin to get 200 maybe 210 to the wheels but i know i can only go so far with a obd0 ecu almost everyplace is telling me i need to upgrade to obd1 and i also feel like i need more rpm on the obd0 pr3 ecu vtec engages at 4500 but redlines at like 6500 or 6800 what can i do about this
210whp?
Yeah, you’re going to need high compression pistons, a good set of cams (more than likely full valvetrain assembly to support said cams), etc etc.
You’re never going to get 210whp without SERIOUS mods.
There is a thread about B17 builds, and peoples’ results… this one in particular came to mind:
http://forums.g2ic.com/showthread.php?137294-B17-all-motor-builds-please-post-your-builds&p=2145804&viewfull=1#post2145804
thanx im probably gonna look for a intake manifold and throttle body and then probably get tuned to see were im at then
IMO this is a complete waste of your time, especially the throttle body. Assuming you have high quality i/h/e you’re not going to see any decent gains from any sort of bolt ons until you re-work the internals. If you’re set on just something bolt-on, I’d suggest either a milled head (or thinner head gasket) and upgraded cams. That will be your best bang for your buck w/o actually rebuilding the engine w/ higher compression pistons. Because the b17a has such a shitty compression ratio you’re pretty much staring at a big wall right now. Unless you fix that compression problem you’re going to be hard pressed to get any decent increases in power from anything you install. I’d suggest you just start saving money and researching what you want to do to the engine.
Also, what transmission are you running right now? If you’re not using a short geared transmission then this is your #1 problem, even bigger than the compression ratio. If you’re still using a long geared trans I would suggest you make the switch to the proper transmission immediately, this will, hands down, be the biggest performance upgrade you can do for the money with what you have now. Lighter flywheel, as mentioned above, will also be a nice improvement.
^^ Agreed. Bolt ons, especially intake manifolds and tb’s, dont produce that much power unless they has supporting mods (ie. cams, pistons, forced inducion, etc.)
Just reasearch alot. Your at the bginning of your “build”. So figure out how much power you want and where you want your power (besides at the wheels, lol) and base your mods around that. Mods are better suited when they are paired with other mods that produce power in the same range. Mods dont necessarily mean more power unless they all work together. Oh and tuning is your firend 
Good luck!
why not just get a gsr b18c block with itr pistons nd good type r cams and you should be good.
ya did some research and pretty much im at a brick wall gonna look for a complete gsr block or buy a new engine and build it this is the best way to go from what you guys are saying
You can definitely make that much power with a b17a. Mine is putting down 188hp on Church’s dyno (measurements taken at the hub, not wheels) and by simply adding a velocity stack and removing the muffler (no additional tuning) it made 200hp. It’s a pretty mild build, basically just all ITR parts, I think of it as a 1.7l ITR engine. If you wanted to get more aggressive with cams and compression you could definitely make more power. But obviously you start to sacrifice reliability and driveability the more aggressive you get. I think you just need to price out all of your options. Another option to consider would be keeping the b17a stroke but enlarging the bore to increase displacement.
I agree and all the above would seem easy for us dedicated fellas but for a newb and best reliability then a basic gsr with itr pistons would be a great foundation to start with.
what these guys have to say is very true… bolt on power is minimal. However there is plenty of variables that may seem small but end up making a big difference. Ive got a b16 bottom end and a gsr head paired with a gsr tranny my car is a 91 so its 0bd0 i pull on any stock ls from a rolling start but off the line a good ls pulls, i cant emphasize how important a good tune is. when you decide who tunes your car you have put your motors response and longevity in their hands. the set up im running isnt ideal, however being tuned makes all the difference. i got all of my parts second hand and had them checked by a good machine shop and did the trial error stuff… bottom line your build will only be as good as you make it. btw my car has 3500 miles on the build so theres certainly room for error. im not sure that being 0bd1 is going to add any significant amount of power. im tuned on bre and i personally have no issues with it. again choose who tunes your car very carefully…