i will like to know which injectors will be good for a na build 280/288 cams on 4age i seen the supra 7m injectors,but the turbo ones or the n/a injectors. do i need the resistor box also or will they work with mine.

To give you an idea, on a smallport with 272/268 cams I am hitting
82% injector duty cycle @ 8200rpm. That's using the stock high Ohm
injectors rated at 235cc/min and programmable management.

Cheers... jondee86

jondee86 wrote:To give you an idea, on a smallport with 272/268 cams I am hitting
82% injector duty cycle @ 8200rpm. That's using the stock high Ohm
injectors rated at 235cc/min and programmable management.

Cheers... jondee86

thanks,for the info i didn't post that i have big port head and ms2 ecu but my injectors r maxed out. Its a fully built engine.

As far as something "used" late 1980s Honda 2.0i engines use a low ohm 240cc injector... this volume sounds just about perfect for jondee

I'm running RC injectors... 320cc... which are WAY to big for my application, but my management seems to be able to handle the size.

N/A Supra injectors are 315cc, so likely are also too big

USDM bigport injectors are said to be 180cc/min low Ohm items
Assuming for the moment, similar fuel usage between your engine
and mine, this would max out 180cc/min injectors at about 7600 rpm.

Recommended max duty cycle for injectors is 85% so those 240cc/min
Honda injectors would be worth a try. I still have a little bit of headroom
at 8200... I wouldn't max out the 235's until I hit 10,000 rpm

As said above, with programmable management, injectors rated in
the low 300's or even 365cc/min GZE low Ohm items could work.
If there is an issue, it only relates to tuning at idle if the injector
open time gets too short.

Cheers... jondee86

So the 4agze injectors will be better with the ms2 ecu!
Thank you guys for all the feedback!

The GZE injectors will be good for at least 200hp. After that
you might need to go to the 440's

Cheers... jondee86

jondee86 wrote:The GZE injectors will be good for at least 200hp. After that
you might need to go to the 440's

Cheers... jondee86

thanks guys working on it now,ill keep u posted.