I would like to hear opinions on max boost on the log TI motors ('85-'87 specifically)
Right now I have an '85 log TI engine installed in my '86 GLH Turbo. I'm using all the right '85 parts to go along with this (G-head/pistons, '85 LM, early distributor etc.)
I have the boost set at 10 psi with a grainger valve right now. I always run 91 octane without any ethanol (no 10% stuff)... base ignition timing is set at 12' BTDC. Injectors are stock replacements from Rock Auto.
Car is running pretty freaking awesome. I also recently added a ported head from a very reputable member hear and the car is now faster than ever before. The car also has full 3" exhaust (TU 3" S/V, no cat, FWDP cat back etc..)
Would it be out of the question to turn the boost up to ~12 or so? I have an Autometer narrow-band A/F gauge and it is pegged to the 20th light at WOT. I haven't heard one iota of detonation either. I know there will be a few guys out there that will tell me to get a wideband O2 gauge, but for this setup (which is more of a resto than modded) I feel like that is just overkill. I only want a little more boost. I know ~15 is out of the question but maybe 12 psi would be OK.