Spark plug Denso or AC DELCO

denso ik22 works also, also an iridium tipped plug

I bought a box of denso.

Everyone has been praising (fleet vehicles).

Im with the Densos already and the spool and throttle response is so much better. Even with gap 0.075mm they are much better.

I have the denso ikh24 and no problems for me.

ive ran the denso plugs in my stage 2 gli, and they worked great, had no issues with them.

Denso IKH24 plugs gapped to 0.024". 6,900 miles. APR Stage 2 tune. Only issue was CEL error when we installed the Unitronic downpipe and flashed to the stage 2 tune. After troubleshooting and contacting APR, they had my shop re-flash to a stage 2 beta file, no more CEL error.

IS38 APR tune with Denso IKH24 plugs, no brainer cheap insurance.

Just an update for you and a PSA: CHECK YOUR SPARK PLUG GAP ON NEW PLUGS. I too trusted that the iridium plugs that I just bought should've been pre-gapped, but I noticed immediately after a tune-up my gas mileage went to piss. Popped the plugs back out and sure enough each one was well over 1mm .

I installed brand new denso ik24 plugs gapped at .026 and I am still getting misfires.

I tried the denso IK20 and had nothing but misfires.