i dont think they would need it, like i said, no one doing anything with them but dropping em in. They wont be seeing that much abuse, the highest boost setting will be 26psi, but that will only be on the rare occasion i get my hands on 110 octane, which will probably end up only being for the dyno and the track. Daly ill be running low boost of 15 psi, high of 20. The AVC-R will let me figure in times to let go higher if i want it to