Splitfire Plugs

[no_shad]

Anyone ever had issues with splitfire plugs?

Fitted them to a GSXR 750 and the engine bogs down under WOT.
I've not checked them myself but they are the right ones and gapped correctly.
Surely splitfire plugs don't require a rejet?

The old NGK plugs went back in and all is back to normal.

[finpos]

First time I've heard of them actually making the slightest bit of difference, one way or another

Probably worth checking to make sure they are all tight and connected up properly.

finpos.

[0ddball]

Possibly the wrong heat range. Stick with the NGK's anyway, Splitfire ones are a gimick.