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Old 05-06-2004, 09:49 AM
  #1456  
Aggdaddy
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Originally posted by budlightnmyhand
Aggdaddy,
If i remove the shim and run a colder turbo plug will i notice an increase in speed?? How many shims are between the head and cylinder case? How many mph rpms should i expect to gain on the top end. Thanks, i have also noticed without much nitro experience that it doesn't seem to rev to 41,000 rpms.

Thanks,
Mike
If you're using 20% nitro and the Rossi Pixi Black 3 port straight out of the box (no modifications) The engine will not top out. You won't hear it scream down the straight-away like you're supposed to when it is properly tuned.
If you use 30% maybe. But I use 20% and I removed the shim, installed the turbo head that came with the engine, and installed a NovaRossi ultra cold turbo plug.
I just had a race last night. My temps were around 245 and under after a 5 minute heat. It moves like it should. I'm running with X12's and novarossi 3 ports.
Again, this engine is not the easiest to tune, so have patience and have fun.
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