S5 Jspec Engine Question?????????
12-02-04, 09:10 PM
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S5 Jspec Engine Question?????????
Guys I have heard that the Jspec T2's had speed governors on them at 115mph....I hope this is not true b/c I will be highly pissed b/c sometimes I like to go a little faster than that. My modded N/A put down 183rwhp and in 4th gear at 7500rpm I was doing 140mph. I really hope that this Jspec Speed Governor thing is just a myth...... 
12-02-04, 09:21 PM
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Sry to upset you SonicRat....just felt that someone could easily answer a question such as that and then others with the same question would have an answer by reading this thread...Im not trying to upset you in anyway just want to make sure I have my facts straight.
12-02-04, 10:06 PM
#6
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Originally Posted by Karack
the ECU has a speed governor setting? i haven't heard of this before but i am not much up on the Jspec technical stuff, more concerned about my Aspec technical stuff. 
12-02-04, 10:08 PM
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Originally Posted by Icemark
The ECU has the limiter... not the engine.
This is pretty basic automotive tech...
This is pretty basic automotive tech...
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12-02-04, 10:21 PM
#9
Eats, Sleeps, Dreams Rotary
Even J-spec Mk4 Supras have 115-MPH (180, which is the top of the stock speedo on basically EVERY Japanese car) speed limiters.
But you can take them off. The highest the speedlimit EVER is in Japan is 80 kph (obscenely slow), or there abouts.
Apparently a guy I know was going 260 kph in his Supra (350~ HP) a while ago... which is 160 MPH if you do the conversion... hehehe.
Naturally, he doesn't have a speed cut any more.
But you can take them off. The highest the speedlimit EVER is in Japan is 80 kph (obscenely slow), or there abouts.
Apparently a guy I know was going 260 kph in his Supra (350~ HP) a while ago... which is 160 MPH if you do the conversion... hehehe.
Naturally, he doesn't have a speed cut any more.
12-02-04, 10:21 PM
#10
Former Moderator. RIP Icemark.
Originally Posted by Karack
i figured it was Jspec only because my near stock T2 broke that rule this morning.
as for the Jspec limiter, wouldn't an Rtek chip be able to defeat this programming?
as for the Jspec limiter, wouldn't an Rtek chip be able to defeat this programming?
If by chance you had a Jspec ECU and Jspec gauge cluster, then you would just remove the speed screw from the back of the Jspec cluster.
Without the signal input from the gauge cluster (Which again is only found on the Jspec gauge clusters) to the Jspec ECU, there would be no shut off.
Last edited by Icemark; 12-02-04 at 10:24 PM.
12-02-04, 10:22 PM
#11
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Originally Posted by SevenDreamz
That is what I meant...but not what I said...wrong choice of words I guess. Well Icemark or anyone else is that governor at 115mph or higher?
12-03-04, 10:10 AM
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Oh ok and i just remembered that since we did a S5 T2 Swap into my 88 GXL...we used an A-spec S4 T2 ECU we had here and a S4 T2 Wiring harness. SO I guess I dont have any worries... sigh!!!!!!!!!!!!
12-03-04, 04:58 PM
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The only way you you would enable the 180km/h speed limiter is if you used the J-spec ECU and the J-spec instrument cluster and you ran the appropriate wire inbetween the two. Since none of you should have any of those three things you don't have to worry about it.
12-04-04, 12:23 AM
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Originally Posted by NZConvertible
The only way you you would enable the 180km/h speed limiter is if you used the J-spec ECU and the J-spec instrument cluster and you ran the appropriate wire inbetween the two. Since none of you should have any of those three things you don't have to worry about it.
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