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Discussion Starter · #1 ·
Running a modified 89 2.5L CB turbo, and still only see about 5100 rpm before it revs out and shifts. A413 tranny and slider cam, S-60 SMEC set 21 psi, but I read those on the threads getting 6000+ rpm on these engines. What are the best build requirements, or setting changes to get even 5600 rpm out of the 2.5. Thx
 

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172 Posts
Discussion Starter · #3 ·
Still won't go over 5100 rpm. Gets there fast then just stalls in that zone. Let off the throttle just slightly, and shifts instantly. I can adjust the kick down to shift earlier say 5000 rpm, but I'm looking to run closer to 5600 before shifting. Not sure what's holding it back. SMEC, Rev limiter?
 
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