hey guys..my tuner is planning to tune my car for 1.8 bar on pump 94 oct.thats about 26 psi spike then holding at about 23~24psi...he has an evo back in singapore...he has been running that settup for quite some time now however he is recommending i get a thicker head gasket...i am not sure about that..


what do you guys think.

thanks in advance.

 

I don't think you would have to change anything with a stock turbo because most people don't run much more boost over stock setting. Once the turbo is swapped and they run a little more boost, they generally replace the head studs/bolts with ARP studs/bolts (whatever the 4G63 has) along with the head gasket.

 

it's not about whether it will hold or not,, it's about how long it will hold.. One month, two, six?

Better change it..

Wael