Hi this is my 1st post in this forum big hello to everybody. I have just took delivery of my supercharger big injectors and aem manegment system. Am busting to get it on but must wait as tuner wont do it running 9psi without me changing head gasket. I have been told that it would be ok with 9psi but what can i do am not lowering it so will just have to change it. The gasket is on its way now from usa 1st week in jan its all going on my holidays are in should get it tuned in 2nd or 3rd week.

 

The other s/c people will know better than me but i'm sure 9psi is fine with a std headgasket

Look forward to hearing your results though when you do get it on

Welcome to the forum btw

 

I'm apparently running 9.2 psi on the stock HG.

14psi seems to be the limit.

 

Stock JDM with higher compression?

 

Indeed.

 

Consensus on the FI forum is ~12 psi needs a thicker head gasket to lower compression.

 

Which tuner?

 

14 psi seems to be fine according to Mase, i guess it really depends on the skills of the tuner, to be honest, i would be worried if mine is tuned by anyone else!!

 

Good point!
OP who are you going to use?

 

Dan Turner is going to do it for me. Anybody else used him on here?