Engine seems to miss in higher RPM range, Any thoughts?

[dandaman]

I replaced the fuel relays and changed the plugs to NGK TR6IX plugs and it seemed to fix my problem. Thank you all for your help!

 

[GT@50]

Now test the rev limiter

 

[Art138]

I replaced the fuel relays and changed the plugs to NGK TR6IX plugs and it seemed to fix my problem. Thank you all for your help!

Those are the plugs that solved my problem gaped at .25

 

[PeteK]

.25???

 

[2112]

So, could it have just been the plugs and not the relays?
.

 

[Art138]

.25???

.028” With the Torrie tune since it causes a short intense spark. Just re-checked I was advised to gap at .028 vs 025” which I did.

 

[nota4re]

So, could it have just been the plugs and not the relays?

For certain, it was NOT the relays.

 

[GT@50]

Relay should set a code, misfires don't always set codes(for some reason, year?)