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Did you plug the Shaft holes on the intake manifold too? Maybe epoxy? I left mine open and my car runs like shit.


I too did this mod last weekend.


My intake valves were not that dirty at all. The butterfly valves were dirty. I broken every one of them removing them.
I put an oil catch can on.
Throttle body coolant bypass.
Changed both Oxygen sensors.

Cleaned everything.


Runs great. Much better without the VTCS and I'm happy I did it. Now, to see what the gas mileage improves too.
 

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HelloI am new to the mazda scene and just acquired a 2013 mazda speed already built with lots of mods..It had been restored to the stock map and i noted that the vehicle would cut off 3-5 seconds after the push start. I also realized that the vtsc, egr and solenoid actuator has been deleted and 2 catch cans installed. I just acquired an accessport 3 and was wondering if you can point me in the right direction of programming it to run right. I am currently in Maryland. If there any way you can help? thank you.
 
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