7 replies to this topic

[oldschoolsi]

Would puttin injectors from a 86-87 integra in a crx SI help any?

[shadowboy]

no, not really. adding more fuel without adding air to compensate will not gain you any power.

[oldschoolsi]

Would having only an intake help? I am thinking about grabbing a SI throttle body and having it bored (idea from a fellow RPR member)

[91civicDXdude]

actually, the vast majority of honda & acura fuel injectors are 240cc. You would not be gaining anything.

[pwr_crx]

Integra injectors are larger then Si injectors, I have integra injetors in my car right now but i have not drivin it with the larger injectors yet. The car idles alot better then before. The fuel pump sounds bad now that i have these in my car. Instead of the steady sound of it turning on, it sounds like it's bogging and dying.

O well the car runs ok, hope this helps even tho i know it wont

[ghrrex]

I don't think stock ew injectors are 240cc's. Don't quote me but i think the ew injectors are 190cc's and the integra's are 210cc's. Not sure though. I am running 1st gen legend injectors with a integra ecu and an intake. It ran Sh*tty with the stock injectors when i put the ecu in. I think the legend injectors are bigger than the integra's. I tried to find the specs for them but i lost the site. Anyone else know the injector sizes? Shadowboy is right though, unless you have some mods, bigger injestors won't help you.

[shadowboy]

stock D16A1 injectors are 240cc peak and hold.

[Kwicko]

Seems like I'd read that the stock EW injectors were 190cc, so 240cc injectors *might* help - if you've got the fuel maps and the air to take advantage of it.

My '87 CRX Si (D15A3) is running '87 Integra injectors and ECU. It runs notably stronger in the top end (4000rpm and up), but it runs kind of boggy and stumbly below 4000rpm. I've been told by Scott (cbstd) - and I don't doubt him at all - that I can get it running better by lowering the fuel pressure a bit with an FPR. I just haven't done it yet. (Adds that to to-do list).

The car has a *light* P&P job on the exhaust and intake ports, per Street Prepared SCCA rules, and runs an HKS intake and Lightspeed 4-1 header. Getting air in and out doesn't seem to be the problem - it's just a matter now of getting the air and fuel in the right balance at all engine speeds.

Mike