What would you choose?
 

Hi. If I don't sell my car, I'm gonna do some more mods to it. I was thinking about going w/ an aluminum driveshaft and safety loop. Will I see/feel a difference in this upgrade? Also, is it worth getting a "dyno tune" if I have a JMS chip and fuel pressure regulator.....what would they actually do for my car?

post what mods you have so we'll know what to recommed and not it be soemthing you have already. dyno tune they will check and adjust your timing and fuel pressure to see how it responds to the changes. you won't notice a change with an aluminum driveshaft and the safetly loop is just in case your driveshaft breks while racing.

Like lx mike said you won't notice any performance increase with an aluminum driveshaft or safety loop, but you'll need the safety loop if you go 13.9 or better or are running slicks, plus it's just a good idea to have. A dyno tune is a very good idea if you have enough mods to make it worth while.

Thanks guys. How much lighter is an aluminum driveshaft than the stock shaft?