ok i cant find real hard data or maby i just did not seach long enough

but how does the evo 9 turbo hold boost uptop compared to the 05evo8 turbo.
like im boosting 23pis then i taper to 20psi by redline.

how is the 9 turbo on the evo8 uptop in that matter.

i would like to know how the 9 turbo taper's on the evo 8. more or less then the evo 8 turbo

and how is spoolup with the 9 turbo on the evo8 compared.

what kind of number's are people showing just from the change. i see average is about 20whp just bolting the evo 9 turbo on the evo 8. any more info would be great. thanks guys.

 

From my personal experience, the 9 turbo tapers more than the 8.

 

the evo 9 turbo tapers more on the 9 then the normal evo 8. but now im asking how is the taper with the 9 turbo on the evo8.

 

From my personal experience, having swapped an OEM 16G IX into my '05 VIII, you have everything to gain and nothing to lose. Spool characteristics are the same but low end torque and peak power are increased. Untuned (well the car was tuned for about 21lbs of boost with the old OEM 16G VIII) I picked up gobs of torque and about 10whp on a very stingy Mustang dyno. When all was said and done and the car was tuned for the new snail we were making more power EVERYWHERE and significantly more torque down low. I've said it before and I'll say it again. Mitsu can't seem to support a WRC team, honor a warranty or sell their SUV's but their turbos are second to none. Their R&D is amazing and to have made such a significant improvement from one model year to the next on their OEM 16G is impressive.

 

ok how is the taper uptop. does it hold boost better uptop. i like your findings thanks for that info. glad your happy with the setup

 

I wish I still had the graphs to compare. All I have is the 16G IX "after" graph...

http://www.norcalevo.net/forum/index...html#msg184615

Notice the curve. I saw no difference in taper between the two turbos. Both pulled hard to redline with my setup but the 16G IX pulls much harder down low. I've done all the supporting mods as well though so results will vary depending on how far along the mod path you've taken the car.

If street racing posts were allowed I'd tell you what I did to my buddy's modded E46 M3, with the VIII turbo and then with the IX turbo, but I cannot. PM me for that info. It made for an interesting comparison.

This thread will give you a frame of refernce on the dyno chart I posted. The EIP Mustang dyno that chart came from is extremely conservative so before folks freak out and think my car's a dud check out what other Evos are doing...

http://www.norcalevo.net/forum/index...html#msg182986

 

the turbo is designed to taper because after you hit 6200 rpm's or so holding boost is pointless on the stock turbo because all you are do is throwing fuel into the system and the engine has topped off making horsepower and all you are doing is increasing heat

 

bigger cams = holding less boost
Mivec = holding less bost
they both hold boost about the same

 

i got my 20G IX 6 blade to hold 24.8psi at 8,000 rpms on an evo 8

 

With what kind of fuel? I haven't seen the 20G IX doing anything significant over the 16G IX until it's given some 100 octane.

 

You know the IX does not have a 20g right?

 

Stage 2 Mitsubishi Evo 9 TME titainium-aluminide turbo & 20G upgrade new, with 10.5 Large Single Puck Turbine Housing. Rated for 450HP, plus it spools quicker!

http://www.lancershop.com/customer/p...&cat=17&page=1

 

TURDSQUIRTER - thanks for the info. i figured since this turbo is a tad bigger then the evo8 turbo it would hold boost a tad better uptop. but if it tapers as much as the normal evo8 turbo but makes better mid and low power then i guess its a good trad off for me who is not going BIG turbo. thanks guys for all your help. i hope this thread helps others in the future

 

Yeah I think you pretty much nailed it. The 16G IX is not a big numbers turbo, nor is any 16G on an Evo really. I think it's a great street turbo though with awesome autoX and road course potential. It's not a bad drag racing snail but it's definately not optimal for that application either if you're trying to crack into the 11's or 10's. It is however a 100% bolt-on affair with 100% OEM parts. Plug and play really. Until somebody creates an affordable 50 trim kit that retains an OEM-ish look, I think this is our best option on pump. Good luck with every thing dude.

 

i just pm'ed ya.