I'm in the journey for purchases a Osiris tune for my 350z the only mods I had left is HFC,plenum spacer. Do you guys think I should purchase the mods first or get the tune first? I no I'm suppose to get the parts first then tune it but I want to get the expensive tune out the way first. But what do you guys think?

 

A tune is the final result of all the mods you make, not the starting point.

You make your intake, engine and exhaust mods with the assumption that will affect your A/F ratio. Once your mods are complete, then get the engine tuned to adjust for the mods.

 

i have an 03 with eshaust, intake, spacer, test pipes and im making 273 rwhp. Would the tune help me any?

 

What kind of dyno was that?

 

lol, obviously a dyno that reads high. Yes, a tune will yield a little more power for the mods you have but don't expect huge gains. You car will be more efficient also.

 

it was a mustang dyno at CIN motorsports in charlotte NC. Many have dismissed my gains but thats what i got.

 

I think they dismissed the weight of your vehicle while setting up the dyno. That is a number I'd expect from an hr powered Z. Regardless of the high number, a good tune will gain you a few ponies. You should always stick with the same dyno whether it's high or low.

 

dyno numbers mean nothing.. go to a 1/4 mile

 

1/4 mile means nothing without equal drivers, track, and weather conditions.