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I couldn't find this question anywhere else, so i thought it was a good time to get the ball rolling.
I have 3 - 1989 JS550's i got this summer for $200 altogether. They all need a very small amount of work, i have one running already. I want to keep one bone stock just for fun. But the other 2 are free game in my opinion.
What are some things i can do to increase performance? I know of pulling the revv limiter, but where can i get the proper in-line restictor? Would more water to keep it cooler help? I already have a high-comp head and a tuned exhaust pipe, but i need more knowledge and opinions. Feel free to give some suggestions, i hope this can help more people than just me.
 
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