?ECU
01-13-2007, 04:31 PM
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?ECU
what is the difference between a 2001 Jap spec ecu and a US spec?
i have a jap spec s2000 but i need to replace the ecu. Can i use a US spec?
i have a jap spec s2000 but i need to replace the ecu. Can i use a US spec?
01-14-2007, 01:33 PM
#4
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I think it's tuned for the 98 octane fuel they have there. It also assumes a higher compression ratio, I believe.
I don't know what the benefit is on 93 octane fuel though.
I don't know what the benefit is on 93 octane fuel though.
01-14-2007, 06:01 PM
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Originally Posted by cdelena,Jan 14 2007, 08:46 AM
The JDM ECU also has a speed limiter.
I have never been above 126mph in my S2000. When I backed off the throttle I felt the back end "shimmy" ever so slightly, when it should not have at all as I was being very fluid/smooth with the throttle inputs. Went home and found a screw in the driver's side rear tire which was down to about 25-26psi. I haven't gone for top speed since.
I have read that a stock USDM S2000 tops out around 155-157mph absolute max. Does this sound about right? What speed is the JDM limited to?
01-14-2007, 06:08 PM
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Originally Posted by SenderGreen,Jan 14 2007, 07:01 PM
Weird, I think my USDM 91 CRX had a speed limiter. Somewhere around 109-111 if I remember right. What speed is a JDM S2000 limited too? Just curious if anyone knows.
I have never been above 126mph in my S2000. When I backed off the throttle I felt the back end "shimmy" ever so slightly, when it should not have at all as I was being very fluid/smooth with the throttle inputs. Went home and found a screw in the driver's side rear tire which was down to about 25-26psi. I haven't gone for top speed since.
I have read that a stock USDM S2000 tops out around 155-157mph absolute max. Does this sound about right? What speed is the JDM limited too?
I have never been above 126mph in my S2000. When I backed off the throttle I felt the back end "shimmy" ever so slightly, when it should not have at all as I was being very fluid/smooth with the throttle inputs. Went home and found a screw in the driver's side rear tire which was down to about 25-26psi. I haven't gone for top speed since.
I have read that a stock USDM S2000 tops out around 155-157mph absolute max. Does this sound about right? What speed is the JDM limited too?
01-14-2007, 06:16 PM
#7
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Originally Posted by CaymanS2k,Jan 14 2007, 07:08 PM
dont know what it is, but i got 160 mph in mine once. island kinda small, so not to many places to do that
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01-14-2007, 06:41 PM
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Originally Posted by SenderGreen,Jan 14 2007, 07:16 PM
I guess altitude would make difference. Are you right at sea level then? Also, that's fast!
01-14-2007, 06:43 PM
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Originally Posted by CaymanS2k,Jan 14 2007, 07:41 PM
yeah, right at sea level...in Grand Cayman...only 2 s2000 on island...i'm the only jap spec one..and the other is an older guy that hardly drives his, but his is US spec
Sorry as far as the original question:
i have a jap spec s2000 but i need to replace the ecu. Can i use a US spec?
01-14-2007, 06:54 PM
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Originally Posted by SenderGreen,Jan 14 2007, 07:43 PM
Wait, so your's is a JDM spec with JDM ECU and you hit 160mph? If that's so then there can't be a speed limiter on the JDM ECU.
Sorry as far as the original question:
I still have no idea.
Sorry as far as the original question:
I still have no idea.