Sorry to be negative....great write up by the way

 

No it's ok, I take bad news fairly well. It's not like I did a writeup of my clutch install and you're telling me I have to drop my tranny again. I can pull the O2 housing in a hour or so, won't be the end of my world if I have to change that gasket.

Thanks for the compliments btw.

 

I'm assuming you're referring to the gasket between the O2 housing and the hotside? What gasket do you recommend there?

 

He recommends the stock gasket... it's a multi-layer stainless sheet design, as opposed to a compressed steel composite which came with my O2 housing.

- Steve

 

did you notice a difference between 1k to 4k rpm range? Was it a faster spool up?

 

Really has to be the Mitsubishi one...

Superhatch, you're right, not a big deal...It is possible to remove the 02 housing with everything else in situ if you have the right tools....

 

same question up two posts up

 

The 10.5 hotside on a stock turbo should result in a slower spoolup than stock, due to the stock 03 turbo having a higher mass rotating assembly than the Evo 6.5 TME Ti Turbo. However, I noticed no increase in spoolup compared to stock, just a reduction in tip-in throttle response. The O2 housing may be the reason that I havn't lost spoolup. I would like to think that with the Ti internals my tip in response would have been the same as stock too.

- Steve

 

To expand on that for people who do not know what I mean by tip in response versus spoolup...

If I floor it at 2k RPMs, I notice no difference when the turbo hits full boost as to before the 10.5 hotside was installed.

If I am holding partial throttle around a turn at high RPMs (4k +) and am giving the go pedal slight nudges, the response of the turbo is worse than it was with the stock hotside and O2 housing. Not tremendous but noticeable.

- Steve

 

Thanks for the how-too.
I did notice you were using a torque wrench, could you add the specs. to you're write up. Also I would like to add for those who are worried about working that close to the radiator and any resulting damage may want to take a peice of flat cardboard and tape it against the back side of the radiator to prevent any bent fins or sliced knuckles. Thanks again for the excellent write-up.

 

I'll get torque specs if I get the chance. And I used cardboard about half the time... should have used it the whole time, but sometimes I'm lazy

 

why didn't you just use the stock o2 housing then?also,why didn't you port&polished everything while you did this? i would think the stock o2 housing(port/polish) would be better than an aftermarket one.that should of gave you more whp,and a better i feel i believe.good write up.if you want it to be a sticky,find the mods in the how to section,and pm them up saying take a look at this thread.that's how i got my how to made into a sticky.

 

I don't think you understand what I said. The O2 housing helped offset the lag induced by the 10.5 hotside, the lag would have been WORSE if I had kept the stock O2.

And I did portmatch every component. I simply didn't put that in this writeup since it has no bearing on how to install the parts.

- Steve

 

did you have to replace the turbo seal and clips?

 

Since I have no idea what you're talking about, no