Factory boost is 11psi for 160hp, so tou're saying 1 psi more will shatter trannsmision? The last cars had even more hp with special apc with 185hp. So either they make more than 12psi or little trolls sit at axles giving extra push when they hear motor revs.Basre said:More importantly your Transmission will not long tolerate 12 psi.. period. and even then you will need to drive like an old woman to avoid bursting it.. Kinda takes the 'sport' right out of the 'extra' .. 5hp per additional Psi over OEM by the way.. power.
If you retard the distributor vacuum with a mod will the car have worse MPG on normal driving? as in less vacuum on idle?Vince T said:You can run 35psi if you want, and have no detonation - if you retard the timing so much that the motor just doesn't make power..
Vince T said:Also, 15psi is quite a bit different with a stock turbo than,
I don't think 15psi with a mostly stock car, albeit with the mentioned mods, will be any trouble. I'd play with the timing a bit, try to optimize the boost retard.