rb25 boot/fuel cut

[ShorelineS14]

Just recently swapped an rb25 in my s14. I noticed tho that on an open throttle, at 7k-8k rpm, I hit a massive boost cut or fuel cut and its quite annoying and robs me of so much power and I can't get the full length of my gears. What causes this and how can I get past it??

[rbpwr]

which maf are u running?

[Sileighty_85]

you relize that a Series 1&2 RB redlines at 7K right?

How much boost are you running and what are the plugs gapped at?

[ShorelineS14]

its not like its hitting redline tho. its only on open throttle it hits the cut. on a 1/2 or 2/3 throttle it goes way past the spot on tach that it happens. i feel like the tach isnt hooked up or reading correctly, cuz when i get a full length of the gear, i can get to the very end of the tach on my s14 se.

right now i'm below stock boost until the rainy/snowy season is over and i'm running stock maf.
NGK iridiums at a 11mm gap

[Sileighty_85]

Your tach need to be recalibrated when the RB is installed.
Drop the Gap down to a .028 inch. forgot what that is in mm.