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Japanese S4 specs

 
Old 05-20-2005, 02:12 AM
  #16  
PorKen
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If the Japan market was limited, it was probably done via the LH coding plug, to give a different map, and/or perhaps a lower rpm limit.
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Old 05-20-2005, 03:35 AM
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ALL" cars in Japan that were registered for use on public roads were limited to 280HP. That was the principle difference beside the extended fender flares.


Pat,

Not quite true - all Japanese manufactures were required to limit power to 280 - many cheated. This did not affect imported cars. As for the front fender flares, they are found on all 89 - 91 GT's, 91 928 Exclusive (Japan only model) and all GTS.

Bob V
93GTS 5sp
89 GT IP1 Race car
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Old 05-20-2005, 03:52 AM
  #18  
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Originally Posted by scorpion928
ALL" cars in Japan that were registered for use on public roads were limited to 280HP. That was the principle difference beside the extended fender flares.


Pat,

Not quite true - all Japanese manufactures were required to limit power to 280 - many cheated. This did not affect imported cars. As for the front fender flares, they are found on all 89 - 91 GT's, 91 928 Exclusive (Japan only model) and all GTS.

Bob V
93GTS 5sp
89 GT IP1 Race car

Hey Bob, how are ya dude? I am not certain how you could cheat. You gotta dyno the car every year at the DMV before you can get insurance.
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Old 05-20-2005, 11:06 AM
  #19  
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Hey, Bob!!
The car is great! I've driven it all week, in the rain and all, and I haven't found any issues with it, in any regard.

Well, that's not quite true. I thought people looked at the '86.5 car................

DAMN!! this car is RED!!
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Old 05-20-2005, 11:10 AM
  #20  
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I hope John Speake sees this thread and chimes in on the "power limitation" issue. If it's true, it seems that it would be a simple thing to deal with to get some relatively cheap HP.

I'd like to optimize the normally aspirated system before I start the SuperModel install.
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Old 05-20-2005, 01:47 PM
  #21  
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Originally Posted by BrianG
I hope John Speake sees this thread and chimes in on the "power limitation" issue. If it's true, it seems that it would be a simple thing to deal with to get some relatively cheap HP.

I'd like to optimize the normally aspirated system before I start the SuperModel install.
Let's see .. my Tokyo S4 had exactly the same Bosch EZK & LH codes as ROW cars, pulls uninterrupted to redline in 1,2 & 3 - and tells me that it would maintain an equally honest effort in 4th if I made that unwise decision on public roads. The flappy opens when it should, ...., and - well, I conclude that it is just a garden variety, run of the mill 320hp S4 .... I would be astonished to find my car off song by 30 hp - but if there is such a thing as a free lunch, save me a spot at the table

Brian - how does the S4 run compared to the '86.5?
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Old 05-20-2005, 02:21 PM
  #22  
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Garth, surprizingly, the S4 feels stronger than the '86 car. I don't know if it's just "new car" excitement, or just becasue it's so damned RED!

I can't see the additional few HP feeling THAT much different, what whith the S4's extra weight.

I did a dyno pull on the '86 car a few weeks ago, in anticipation of the SuperModel install, and since I'm going to do it on the S4, now I'll get a pull done on it as a baseline also. Then we'll at least know which has what for power, in spite of what the butt thinks.
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Old 05-21-2005, 02:54 PM
  #23  
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I agree with Garth. I would be very surprised if my 89s were down 40 HP. But as Garth said, if there is a free 40 HP to gain - I'm there! A friend in town is all ready to do his install of Andy's SC unit on his Japanese 88S 4. He has sorted out all of the issues and is ready to go. He was just ready to start and was out for a rip and BROKE the drive shaft!! Literally it twisted apart at the splines where it enters the tranny. So... new TT install later (he was choked) and he is finally ready to begin! I'll se if he is interested in the September run. Sounds interesting.

Greg
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