1.9 rockers

**wking2** · 02-26-2010

wanting to buy 1.9 rockers for my n/a 08 grand prix,

wa slooking around and found these
W Body Store

they say to choose the split ratio rockers and im not so sure what that means

or

ZZ Performance

also reading the forums i have seen that the msd coils do not help these cars that much, how much would the zzp 10.mm help, i have already installed a 3 inch slp header downpipe and slp catback, hpv, poly mounts, 180 therm, what are some other things i should do

**Bio248** · 02-26-2010

the split ratio rockers work better on an n/a car because of their unique ratios. you could run 1.9s and see gains as well, but the split ratio are going to have an advantage over them. ZZP has the same thing, called ER ratio rockers.

the wires arent going to help all that much since the stock wires do just fine. the only good part of big, beefy wires is that you can take them on and off 100,000 times and still be able to use them effectively.

sounds like you need a good tune and your car will run pretty well. next step would be an hv3.

**wking2** · 02-26-2010

cant get a tune because it is a 08 and no one supplies a tune for them, only up to 05, i have the hv3 already

**wking2** · 02-26-2010

and do i need to upgrade the valve springs or no

**blueguy** · 02-27-2010

You can get a tune if you buy a 04-05 PCM. If you plan on shifting over 6K then yes, you need springs and retainers.

**gtryda** · 02-27-2010

the biggest gains i noticed on some of my mods for the n/a prix was either headers, fenderwell intake, and a tune if u can get 1. Pretty good power from those installs.