# Possible to build a 400whp sr that spools by 2000-3000rpm?

**URL:** https://forums.speedlife.net/t/possible-to-build-a-400whp-sr-that-spools-by-2000-3000rpm/107276
**Category:** SON240sx Automotive
**Created:** [June 30, 2007, 7:19am UTC](https://forums.speedlife.net/t/possible-to-build-a-400whp-sr-that-spools-by-2000-3000rpm/107276 "2007-06-30T07:19:10Z")
**Posts on this page:** 1
**Showing post:** 26

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### Author: ![snowboard\_240sx](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/snowboard_240sx/32/5519_2.png) [@snowboard\_240sx](https://forums.speedlife.net/u/snowboard_240sx)
#### Post date: [July 1, 2007, 10:09am UTC](https://forums.speedlife.net/t/possible-to-build-a-400whp-sr-that-spools-by-2000-3000rpm/107276/26 "2007-07-01T10:09:27Z")

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> [@FS - Tires (Lots of Sizes) - Check inside...](https://forums.speedlife.net/t/fs-tires-lots-of-sizes-check-inside/8590/31):
>
> KAT, sounds tempting, I often wonder if it’s a better choice than an rb25det… but it will need custom computer for a descent tune… and alot more work in some ways, and in the end again more weight up front…

I know that with every motor your “Pondering” you plan to build it or w.e. But with any turbo motor u will need a custom computer. whether it be a safc, or a standalone. or an ecu done at jwt or w.e u will need something done to the ecu on fuel injected motors. You cant just up hp without changing injectors etc, and that means ur computer wont be putting out enough fuel and BOOM there goes ur motor. ka’t is a good choice for a little fun on a cheaper budget. Theres a few guys with only 2 grand into their ka and its turboed with a t25 run on a safc etc etc. Probably around as fast as an sr if not faster, but alot more torque.

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