Originally Posted by Technology

I don't know too much about 240's but I use bpr8es plugs in my conquest gapped to .25. I use e85 fuel, 22psi and about 390whp. My tuner was saying he's tuned some evos with a .09 plug gap, but they are very high boost e85/e98 cars. Also, I was using a stock DSM coil pack and had a very noticable power drop at higher rpm. We switched to another one and the power was back up to where it should have been. With the weaker coilpack, the tuner had increased timing to compensate and after switching, we saw knock and had to pull some timing, but power wasn't affected.