# si ecu in gsr?
**URL:** https://forums.speedlife.net/t/si-ecu-in-gsr/22219
**Category:** NYSpeed Automotive
**Created:** [December 28, 2006, 12:26am UTC](https://forums.speedlife.net/t/si-ecu-in-gsr/22219 "2006-12-28T00:26:18Z")
**Posts on this page:** 8
**Page:** 1
### Author:  [@jdmEK9gsr](https://forums.speedlife.net/u/jdmEK9gsr)
#### Post date: [December 28, 2006, 12:26am UTC](https://forums.speedlife.net/t/si-ecu-in-gsr/22219/1 "2006-12-28T00:26:18Z")
hey will a 99-00 civic si ecu run my jdm gsr motor in my 99 civic ex? ive been lookin for a 99-01 gsr ecu but i found an si so do i have to modify anything or will it run fine.
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### Author:  [@jdmEK9gsr](https://forums.speedlife.net/u/jdmEK9gsr)
#### Post date: [December 28, 2006, 1:18pm UTC](https://forums.speedlife.net/t/si-ecu-in-gsr/22219/2 "2006-12-28T13:18:31Z")
anyone? lil help please :pimp:
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### Author:  [@sureshot007](https://forums.speedlife.net/u/sureshot007)
#### Post date: [December 28, 2006, 1:47pm UTC](https://forums.speedlife.net/t/si-ecu-in-gsr/22219/3 "2006-12-28T13:47:13Z")
a gsr manifold has the secondary butterflies, which you would need a P72 ecu to control. So, it won’t work for you.
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### Author:  [@jdmEK9gsr](https://forums.speedlife.net/u/jdmEK9gsr)
#### Post date: [December 28, 2006, 2:24pm UTC](https://forums.speedlife.net/t/si-ecu-in-gsr/22219/4 "2006-12-28T14:24:24Z")
> [@sureshot007](#):
>
> a gsr manifold has the secondary butterflies, which you would need a P72 ecu to control. So, it won’t work for you.
thanks man thats all i needed to know.
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### Author:  [@vq30de](https://forums.speedlife.net/u/vq30de)
#### Post date: [December 28, 2006, 9:33pm UTC](https://forums.speedlife.net/t/si-ecu-in-gsr/22219/5 "2006-12-28T21:33:29Z")
Dont matter civics are way lame anyways…
hi spencer 👋
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### Author:  [@jdmEK9gsr](https://forums.speedlife.net/u/jdmEK9gsr)
#### Post date: [December 28, 2006, 11:42pm UTC](https://forums.speedlife.net/t/si-ecu-in-gsr/22219/6 "2006-12-28T23:42:18Z")
> [@vq30de](#):
>
> Dont matter civics are way lame anyways…
>
> hi spencer 👋
what up carl. we gotta chill soon man. yea i understand why everyone hates on hondas i do find myself driving like an asshole sometimes but how could i not with a stock 8k redline? they are great cars it just sucks that they are all fwd and it takes some decent loot to make em fast. but shit mine’s basically a stock jdm gsr motor and i’ve taken a lot of cars that i didn’t think i could keep up with. i always enjoy smoking stock audi’s and a jag 3.0 the other day since they are like $30-40k more than i paid. but anyways get a confederate flag for that truck you redneck!
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### Author:  [@Zer0DazE](https://forums.speedlife.net/u/Zer0DazE)
#### Post date: [December 29, 2006, 5:38am UTC](https://forums.speedlife.net/t/si-ecu-in-gsr/22219/7 "2006-12-29T05:38:51Z")
you could swap out to a skunk2 manifold, but the fuel maps are going to be wrong. you would also need to get an afc.
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### Author:  [@sureshot007](https://forums.speedlife.net/u/sureshot007)
#### Post date: [December 29, 2006, 5:44am UTC](https://forums.speedlife.net/t/si-ecu-in-gsr/22219/8 "2006-12-29T05:44:20Z")
I think we talked about this before…
OBDI chipped ecu. I tried to keep my car OBDII, and after fighting with a bunch of different things, it is really just the best option all around.