rb26 breaking up under revs?

[drftnrps13]

ok get my rb26 swap into my s14 under wraps. now in N when i rev the motor it breaks up around 3500-4000 rpm? fuel pressure is at 45psi constant tru the revs and i just had my stock injectors cleaned. my car also smells like its running rich too! the plugs i have in there are some bosch platium +2 for a ka24de( i know stupid) just put them in there to get the car started. now i have a set of NGK Iridium IX (BCPR7EIX-11) someone with an rb25 neo told me to use them. 1-should i use these plugs?2-what should i gap them to?

im guessing this is the source to the break up. any info please help! thanks paul

[Cjmartz2k]

Try cleaning the coil packs. Remove the rubber boot from the bottom of the coil pack, pull out the spring while twisting it, and look at the seat where the spring sits. If it's not shiny brass looking, stick a dremel down in there and grind out all that crap that builds up in there. Re-assemble and your good to go. I'm running 1.8 bar and making 500+ rwhp on my stock coils.

[drftnrps13]

thanks for the advice! will do it tommarow! ill post the out come!

[HxC_Nismo]

also you should set your base fuel psi at 43psi (disconnect the vacumm line of the FPR and then set it to 43psi)