# will TT supra injectors work

**URL:** <https://forums.speedlife.net/t/will-tt-supra-injectors-work/84417>\
**Category:** SON240sx Automotive\
**Created:** [March 21, 2005, 1:29pm UTC](https://forums.speedlife.net/t/will-tt-supra-injectors-work/84417 "2005-03-21T13:29:31Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![TheDecline](https://avatars.discourse-cdn.com/v4/letter/t/f1d935/32.png) [@TheDecline](https://forums.speedlife.net/u/TheDecline)\
**Post date:** [March 21, 2005, 1:29pm UTC](https://forums.speedlife.net/t/will-tt-supra-injectors-work/84417/1 "2005-03-21T13:29:31Z")

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will stock TT supra injectors work in a ka24de?  
they are 540 cc/min at 41.2 psi of fuel pressure (~550 cc/min at 43.5 psi), and are a two-hole, side-feed, low resistance design

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**Author:** ![mr200](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/mr200/32/5495_2.png) [@mr200](https://forums.speedlife.net/u/mr200)\
**Post date:** [March 21, 2005, 1:51pm UTC](https://forums.speedlife.net/t/will-tt-supra-injectors-work/84417/2 "2005-03-21T13:51:18Z")

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I’m pretty sure the KA DE uses high impedance injectors (10-14ohm)

Correct me if I’m wrong … can’t say for sure … not a KA-phile

If they do, you’d need to wire in resistors to use the low impedance Supra injectors.

-edit- checked the manual and they’re 11 ohm (ka24de)

So no, they won’t work without some help … hell, even if they were high, still needs help 😉

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**Author:** ![SHIFT\_KA24DET](https://avatars.discourse-cdn.com/v4/letter/s/b9bd4f/32.png) [@SHIFT\_KA24DET](https://forums.speedlife.net/u/SHIFT_KA24DET)\
**Post date:** [March 21, 2005, 2:00pm UTC](https://forums.speedlife.net/t/will-tt-supra-injectors-work/84417/3 "2005-03-21T14:00:49Z")

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There are also varrience between sidefeed injector physical size…

You have to make sure they are the same size.

Eric I have some stock KA ones you can compare with if need be.

Post this topic on [www.ka-t.org/forums](http://www.ka-t.org/forums) if anyone would know they would.

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**Author:** ![mr200](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/mr200/32/5495_2.png) [@mr200](https://forums.speedlife.net/u/mr200)\
**Post date:** [March 21, 2005, 2:22pm UTC](https://forums.speedlife.net/t/will-tt-supra-injectors-work/84417/4 "2005-03-21T14:22:09Z")

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Heh, well if we’re scared of making our own fuel rails 😉

If you didn’t buy the injectors already

3rd Gen (FD3S) RX-7 secondary injectors are SIDE FEED HIGH IMPEDANCE 850cc, I think the primaries are 550cc.

Jspec STis I believe are also side/high

LOL you’re looking for the complete opposite of what I am, so most of my information is useless.

There used to be a kick ass, every injector ever made breakdown on [http://www.autospeed.com.au/](http://www.autospeed.com.au/)

but now you have to pay to read it ☹