Just like to have some feedback on this from you turbo gurus. I apologize if you have seen before, however, after reading many threads, I am still uncertain what spring to use; either the RED spring or Natural + Red spring. However, I feel certain that many of you had this same dilema when installing your turbo or trying to get to your desired boost limits.
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My Question is: What Precision Wastegate Spring do you recommend for a decent and yet reliable boost level for the following setup: (I have been informed from Alpha that the Wastegate spring out of the box came with the RED (5.6 psi) spring). I know staying with the RED spring definitely is reliable as I have been using it for a while now without issues or boost creep but can I go up to the Natural + RED with adding the mods stated below and still be reliable with the extra boost (6.9 psi). I do not intend to change engine internals such as head bolts (OEM engine remains).
-Alpha Stage 1 turbo kit with 2 bar sensor (Already have)
-Alpha turbo side exit exhaust (Already have)
Adding the following
-1320 performance 2.0 version manifold to replace OEM manifold (Will have soon)
-DDM Slingshot Coolant Re-route with DDM Coolant Tank (Will have soon)
-Center feed fuel rail by DDM
-Will be getting new reflash/tune by Bob
Just to reiterate, can I safely go to the Natural + Red spring in the above setup? Also again, I have no intentions at this time to change any engine internals. I did read somewhere from RABTEC that he would definitely not go above 9 PSI. Just thinking outloud, isn't it unlikely that you would go above 9 PSI with the Natural + RED with a good tune from Bob? Anyway, Thanks guys. See ya in SSITS.
