is there a chip for 5th gen preludes? if yes, what's the hp gain?

 

Damn that was helpful. Thank you for your insight.

 

I hope so!!

BUT, my understanding is that the fuel map is not flash programmable and so NO CHIP FOR YOU!

If this is true it sucks! If I move out of California I will consider an ODBI conversion and Hondata. Untill then . . .




[Modified by LudeLC, 12:41 AM 1/24/2002]

 

No. It is not possible. The ECU of the 5th gen Prelude does not have a traditional ROM that stores fuel and timing maps. Instead the 5th gen ECU stores the maps within the microcontroller of the ECU. The microcontroller is a proprietary Okidata unit. The maps are hard-wired in the SRAM of the Okidata.

In order to reprogram it, you would have to replace the whole microcontroller with a custom designed unit with the new maps hard-wired in it.

Andrew

 

oh... ic

thanx

 

Hondata.

 

Excuse me, hondata?

 

http://www.hondata.com

(i.e. Re-programmable OBDI ECU)

Read up on it, it's a great site.

 

I am still unsure, can it beused with the 5th gen? Sounds good to me, but only if i can use it.

 

there's a company called jetchips which can reprogram the ECU on 5th gens for about $300. you have to send the ecu to them and they'll send it back. they will reprogram the OBD II ecu, which i hear is illegal. it may also be the reason you don't see any advertisements for it. that's what i hear. dont' quote me on it. but

here's the site: http://www.jetchip.com/imports/

also i haven't heard of anyone doing this so i dont' know of its capabilities. you're supposed to be able to gain up to 11hp. you may want to check it out.

 

OK, I found out how the Hondata thing would work for a 97+ Prelude. Not sure how hard it would be, but it looks to be an option. That jet chip thing looks interesting to, but its not really adjustable once they program it.