LS or rex si

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Jun 23, 2004 | 02:07 PM

RACINTWEEK

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Joined: May 2004

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From: NoVA / Harpers Ferry

LS or rex si

ive heard that if you use a rex si ecu with an LS engine you 'll gain a little more power
just wondering how true this is

Jun 23, 2004 | 02:43 PM

StupidSlowRSX

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Joined: Nov 2003

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From: Central, FL, USA

Re: LS or rex si (RACINTWEEK)

the 88 -89 5spd LS ecu's have better fuel mapping... Smoother idle.. I wouldnt go as far as adding extra hp

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