pressure drop

[jamesdem1123]

Whenever i give it full throttle it will run 10 ps1 and then around 5k rpms it will drop to around 8 or 9 psi. is this a boost leak or backed up exhaust? i just put on a new down pipe but have not run the car yet and looking at some of the intercooler pipes there is one that is corroded which may be leaking. (45 degree bend towards bottom of car about 1 foot away from turbo outlet)

 

[cartman]

not to thread jack here, but i just installed 2.5" ic piping and aftermarket IC, and i went from 8 psi down to about 5. is this just because of the larger ic and piping?

 

[MKIIINA]

if you are on the stock turbo yes its normal to see drop off like that. the ct26 runs out of oomph (yes thats an industry term :lol: ) towards redline. bigger turbo or shim the wg some will help a little.