I would say that IX is going to make a considerable amount more power with a much nicer curve than the VIII.

When I got custom tuned there were a few IX's that made more power than me with just an exhaust and tune vs. my full exhaust, cams and tune and supporting mods. This was on a DD dyno.

 

the IX will be the higher hp car if they will tuned it the same PSI. The MIVEC will yield for more hp. i would say, easy 20 more hp and torque.

 

you're gonna be about ~30whp short of him.

 

yeah i think so ,but all depend on the tuner too.how much he knows about MIVEC timing ,advancing etc. The 20 extra for sure, but can be 30 or more too.

 

i agree that he should make more power but i think that my car feels and always has felt stronger than his so i think the results will be interesting and benificial to the community. a number of ix's with close to the same mods in this area have been hitting 325whp on this guys tune on that dyno so i am guessing i will be around 300whp and my friend will be around 330whp. i will keep this thread updated as i get results.

 

I think what you feel when you say stronger is the surge when the turbo finally spools up where the IX comes into boost more progressively but probably slightly sooner.

 

Any News yet, I am uber anxious to see these

 

guaranteed. 9s feel slower than the 8s but trap speed and dynos prove otherwise.

 

The MIVEC zeroes out at high rpm. MIVEC allows for more mid-range hp and torque.

The reason why peak HP should be higher is because the IX's use a more aggresive cam than the 8, not because of MIVEC.

 

throw in cams and a turbo upgrade and things will swing the other way.

 

I'd rather see a comparison between an IX and a VIII with an OEM 16G IX turbo, aftermarket cams, and cams gears. Those are the mods on my VIII and the torque curve and peak numbers are just like a comparably equipped IX.

In all honestly, the OP's comparison will be worth following but I think the results are predictable. Given the bigger cooling passages in the MIVEC head, it simply is a better piece of hardware than the VIII head running stock cams. Also, given the same level of boost, the IX produces more power. Add an improved 16G turbo and it's not exactly ground breaking to expect a comparably equipped IX to make more power than it's VIII counterpart. The IX will produce more power under the curve and will also do it earlier. Even the if the peak numbers are within 10-20whp of one another, the IX will be the much quicker car. Therefore don't fall in love with the peak numbers when analyzing the results. Look at the power under the curve. I predict the VIII owner will be looking for cams within the month.

BTW...The larger intercooler on the VIII will make exactly a 0% difference on a chassis dyno.

 

what about the VIII MR, ive heard a few people say this has it over the IX easily?

 

^^^^no its not true, the MR has a same engine just like every 8.

 

I'm still buying a IX. I really like them a whole lot more.

 

Are you sure it's not because of the Turbo? I know that both the VIII and IX has a TD05-16G but the IX has a bigger compressor housing.

Not trying to start an argument, but since you said that the IX runs on a more aggresive cams, do you happen to know what's the spec on both the VIII and IX cams?