PSL184 wrote:When the valves start to bounce.....
amen to that, i change when the engine makes funny noises!
in the 1098 the torque curve is soo flat that i could just keep on going, it doesnt feel like it drops off but i give it a break at 5500rpm.
The datsun a15 beast, well i dunno because i havnt got a rev counter but if i keep going the way i am then ill have the middle east sucked dry in a matter of months

it feels like it backs off a bit, then i change just as that comes on but i dont know when that is, id say its around 6500rpm. could just be a tuning issue but ill find out soon once my air/fuel gauge goes in.