sg77 wrote:Rio, could you give more info about your "+2 Mod"? I assume you mean advancing the engine ignition timing? Was there a noticeable performance improvement from that? Did the dealer do it for you for free? Are there any disadvantages to it? (I read somewhere that it increases torque at lower RPM, but decreases torque at higher RPM?)
I had my Dealer do it kinda under the table ( Slipped my service advisor a 50)
They electronically advanced my engine's timing 2*
Guys I must say this is a HAVE TO HAVE mod.... The difference in low end power delivery is huge... Much more torque and power... i have yet to dyno it but there is a huge difference in power... My guess (and i've timed it around this) is that with my other mods... listed below is that my 0-60 time is now in the mid to hi 5's
The only disadvantage ( not to me ) if you're a cheep one is that you MUST burn premium but other then that if anything it has improved my fuel economy
And no the Hi RPM power does not at all suffer due to the fact that the engine's control unit automatic retards the timing at super hi RPM so there is no loss in that range.
Please feel free to ask anything else you would like to know.
PS:
Ill put it this way... Ive raced a few g35's and g37's Both coupe's and sedans and have yet to lose a race to hte next stoplight so yes it did indeed make a significant gain in performance