So my cars at the tuners getting the new GTX3076R put on with nismo 740cc injectors and exhaust. Its got a rebuilt bottom end with a re-co'd head. Its already got plenty of supporting mods such as Bosch 044 fuel pump, FMIC, Wolf 3D v4. Rang them up today to see how things are coming along and they say the cars detonating in the top end and they're not sure why.
So they asked me what kind of fuel I put in it. I put in a fresh near full tank of Caltex 98 right before I took it to them. They seem to think that may be the problem as Caltex runs a different blend of ethanol, possibly?
So they're going to drain the caltex and try BP ultimate tomorrow.
Can I get some input please, this is kind of worrying me and I'm questioning they're abilities.