boostn6262

I have a 2003 evo 8 full bolts minus o2 housing stock turbo on e85 at 28.5psi. Would i benefit from upgrading my stock wastegate to a fp 25 psi one or is my stocker fine?? Or just go o2 dump? And would i also benefit from upgrading my stock platic bov to a synapses?

WRC-LVR

iTrader: (1)

Oh yes replace that plastic DV with the JDM IX metal one or a synapse. The plastic ones leak like a sieve. I guarantee you have boost leaks from that alone. Replace all the clamps with t-bolt ones as well.

I think you will find you will hold boost much better and will have to retune because of the change

Either an FP or Forge wastegate actuator will be fine...21-25 psi 21 will not overshoot like a 25 psi actuator might so i'd go with that. Again it will need retuning so id change both items, do a boost leak and then retune.

sparky

iTrader: (1)

Does your turbo have the 9.8cm, or the 10.5cm turbine housing? All 2003 turbos came stock with the 9.8, but most people upgraded to the 10.5 piece.