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supra_man87
03-31-2008, 10:14 PM
hey, i just read that there are two different types of injectors for the n/a 7m. http://www.lextreme.com/7mge.html is this true? make and any difference in performance? any difference at all?
jkbmkiii
03-31-2008, 10:19 PM
hey, i just read that there are two different types of injectors for the n/a 7m. http://www.lextreme.com/7mge.html is this true? make and any difference in performance? any difference at all?


No difference unless your making enough power on say the 295 that you need to go bigger, not that 20cc is going to make a huge diff anyway..

For ie>> "your car is running out of fuel at 280whp then the 315's would help for a bit" Not much though.
AJ'S 88NA
03-31-2008, 10:28 PM
To take advantage of bigger injectors you should have other mods and a way to tune, like a SAFC. If you have heavy mods you can use turbo injectors.
jkbmkiii
03-31-2008, 10:30 PM
you would need a lot of mods to get close to maxing out either injector!
AJ'S 88NA
03-31-2008, 10:38 PM
you would need a lot of mods to get close to maxing out either injector!Yep. I could have made do with the 440's but HPF said I should get the 550's. You know how salesmen are:biglaugh:
supra_man87
03-31-2008, 10:58 PM
you would need a lot of mods to get close to maxing out either injector!
its just that since they are for the same car, same applications, but different cc size, you would think there would might be some kind of difference. and i would say that they are the same as cressida's correct? cause i have a cressida 7m that has a supra intake and the oil pan and componnents. i just didn;t know if my mech changed the injectors too cause the ones that i have leftover are supra ones. the yellow ones to be exact.
jkbmkiii
03-31-2008, 10:58 PM
"Yep. I could have made do with the 440's but HPF said I should get the 550's. You know how salesmen are" Quote AJ'S 88NA




Hell I was at 350whpand360ftlbs@11psi on my factory 440 with room to go.
jkbmkiii
03-31-2008, 11:00 PM
its just that since they are for the same car, same applications, but different cc size, you would think there would might be some kind of difference. and i would say that they are the same as cressida's correct? cause i have a cressida 7m that has a supra intake and the oil pan and componnents. i just didn;t know if my mech changed the injectors too cause the ones that i have leftover are supra ones. the yellow ones to be exact.


I would say that your ecu might be calibrated for one or the other injector....
jkbmkiii
03-31-2008, 11:02 PM
As far as a Supra mech, get a hold of me if you need something done!
supra_man87
03-31-2008, 11:11 PM
As far as a Supra mech, get a hold of me if you need something done!
oh will do! it seems like we are just talking on two different posts. lol and yeah i'm taking a class at csu-p for auto repair. and i have my old engine in my garage being taken apart. so i'm learning. i'm not toyo mech though. i know some stuff.
CRE
04-01-2008, 12:22 AM
Yep. I could have made do with the 440's but HPF said I should get the 550's. You know how salesmen are:biglaugh:
Don't get me started on this again... :3d_frown: I still want to know who you talked to.
AJ'S 88NA
04-01-2008, 06:37 AM
Don't get me started on this again... :3d_frown: I still want to know who you talked to.I'll never tell, but he know's who he is:3d_frown: I'll just have to build it bigger and better, besides you helped me tune it and they work not as hard but they work. I'll save em for my next motor:naughty:
Nick M
04-01-2008, 11:00 AM
hey, i just read that there are two different types of injectors for the n/a 7m. http://www.lextreme.com/7mge.html is this true? make and any difference in performance? any difference at all?

The original injectors were low impedance I think. I will look in the repair manual for you.