Kalash

Hey guys,
I have got an e85 remap for my 05 Convertible Z, and since then I have some small misfires happening when i'm close to the redline (like around 6400-6700rpm). It's like the fuel stopped coming for a tenth of a second then comes back to normal.

The mapper told me that it may be my ignition system that is old and that I should start by replacing it. I have then installed NGK Iridium Spark plugs and Reinforced coils from HP-Ignition. It changed litterally nothing. Still the same misfires..
Before i remove my injectors to get them verified by a shop, does anyone have an idea of where the issue could come from ?
Thanks !

iideadeyeii

iTrader: (6)

Do you have an AFR meter? A very rich condition may feel like misfiring. If your injectors are fine at every other rpm it would be hard to believe they are just not working above 6400

Kalash

No i don't have an AFR Meter but i may be able to check it with an OBD2 reader