I have a stack of 25+ index cards filled with notes about the care and service of the car. The factory service manual has notes and highlighted areas all over it.
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.
Replaced spark plugs with genuine VW Bosch units
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.
I did swap in Denso IKH24 at APR recommendation. Runs nice and have no issues to share
i changed the original NGK spark plug with new Bosch super 4 spark plugs. a nice improvement but still far from old good performance.
Bosch is making crappy plugs these days.
Put the correct spark plugs in there (NGK BKUR6ET-10 for AEG), throw those Bosch +4 turds in the bin where they belong.
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