# 550cc max whp potential???

**URL:** <https://forums.speedlife.net/t/550cc-max-whp-potential/81551>\
**Category:** SON240sx Automotive\
**Created:** [September 5, 2004, 12:26pm UTC](https://forums.speedlife.net/t/550cc-max-whp-potential/81551 "2004-09-05T12:26:52Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![Stinson240sx](https://avatars.discourse-cdn.com/v4/letter/s/7ea924/32.png) [@Stinson240sx](https://forums.speedlife.net/u/Stinson240sx)\
**Post date:** [September 5, 2004, 12:26pm UTC](https://forums.speedlife.net/t/550cc-max-whp-potential/81551/1 "2004-09-05T12:26:52Z")

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Anyone know the max power potential of 550cc injectors on an sr20det?

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**Author:** ![bing](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/bing/32/7211_2.png) [@bing](https://forums.speedlife.net/u/bing)\
**Post date:** [September 5, 2004, 1:21pm UTC](https://forums.speedlife.net/t/550cc-max-whp-potential/81551/2 "2004-09-05T13:21:46Z")

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depends on other things, you can push well over 300 rwhp depending on turbo, computer and tuning.

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**Author:** ![Gonad](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/gonad/32/5481_2.png) [@Gonad](https://forums.speedlife.net/u/Gonad)\
**Post date:** [September 5, 2004, 2:04pm UTC](https://forums.speedlife.net/t/550cc-max-whp-potential/81551/3 "2004-09-05T14:04:41Z")

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I’m pretty sure you can push more then 300hp.

My guess would be 400 to 500hp I could be totally way off. I am merely  
guessing this number.

The stock injector is 370cc and it maxes out at 260rwhp I believe.

Edit: Yes the stock SR injectors are 360cc. And KAs are 260cc I believe.

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**Author:** ![DarkForceJackal](https://avatars.discourse-cdn.com/v4/letter/d/b38774/32.png) [@DarkForceJackal](https://forums.speedlife.net/u/DarkForceJackal)\
**Post date:** [September 5, 2004, 2:11pm UTC](https://forums.speedlife.net/t/550cc-max-whp-potential/81551/4 "2004-09-05T14:11:32Z")

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> [@Gonad](#):
>
> The stock injector is 360cc and it maxes out at 260rwhp I believe.

Is that stock KA or SR? I thought the SR were 370’s? And if SR, what do the stock KA’s injectors displace anyway, anyone? 260cc was it…?

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**Author:** ![Gonad](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/gonad/32/5481_2.png) [@Gonad](https://forums.speedlife.net/u/Gonad)\
**Post date:** [September 5, 2004, 2:15pm UTC](https://forums.speedlife.net/t/550cc-max-whp-potential/81551/5 "2004-09-05T14:15:09Z")

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> [@darkforcejackal](#):
>
> Is that stock KA or SR? I thought the SR were 370’s? And if SR, what do the stock KA’s injectors displace anyway, anyone? 260cc was it…?

Yes, SR = 370cc, KA = 260cc.

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**Author:** ![jonathan](https://avatars.discourse-cdn.com/v4/letter/j/aeb1de/32.png) [@jonathan](https://forums.speedlife.net/u/jonathan)\
**Post date:** [September 5, 2004, 11:50pm UTC](https://forums.speedlife.net/t/550cc-max-whp-potential/81551/6 "2004-09-05T23:50:49Z")

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550 are almost the same as msd style 50# injectors which typically get around 350rwhp, i’ll be putting in a set of 550’s in my KA on thursday, i’ll let you know when its tuned, i’m aiming for ~360rwhp.