hey dont know if its been commented on but didnt have time to go through every page. The Rear gear oil thats crazy to put that in the car. I would really be interested to see what results and if its been proven. Only reason i say that is 80w140 is commercial trucks rear oil. I would think the noise the rear would make would be pretty noticeable at this point almost double the thickness of oil. Also the LOSS OF HP >=(

 

Anyone lives in Riverside county and know where a good shop to tune an evo? Planning to tune my evo in the future... In getting one 3 months from now

 

Really good info, a MUST read for every new member

 

I agree. I found it very useful

 

I just read all this but nobody really touched on the Limits of the motor with stock internals. So my question to the gurus who know the Limits of the 4g63 would be what power level and/or torque level has the 4g63 been KNOWN to blow her top or bottom off? My friend told me its the Tq is what does her in around 450tq and Hp really doenst matter because because the 63 can handle hp. Whats the facts?

Also with these limits in mind, add E85 to the equation. I read on here E85 is good for the engine. Its cleaner and doesnt leave carbon in the block. With the use of E85 does that add some dependability on a say 500hp/500tq Stock block or is she a ticking time bomb?

Thanks

Pat

 

5 stars from a guy who loves efficient mods.

 

Good read.

 

Thanks for the tips!! I needed them.

 

great thread for newbs

 

This def was a good read and one of the first things people should read if they just bought an evo.

 

Good read as I am waiting on the loan paper work to get here so I can pick up my new-to-me EVO 9.

 

The set up I am looking for is 300-350 WHP on 93, after a tune of course.
Currently I have this....
Greddy Ti-C 80mm TBE
Walbro 255
Injen intake w/UICP & LICP
AMS 3.5 FMIC
Evo 9 BOV
AMS MBC 20 psi


I plan on adding a 9 turbo and O2 housing as well as a wideband.

Will I get any good gains from a ported intake manifold and ported exhaust manifold or would they be a waste?


No plan on adding cams at this time.

 

Those are intelligent mods for your goal. Are you planning on replacing the OEM cat with either a highflow cat, or better (for power, worse for the environment) a 3" testpipe? IMO, the catalytic convertor definitely chokes off a significant amount of power... I could even feel a seat-of-the-pants difference between a MIL.SPEC spiral wound, metal-core highflow 3" cat and a 3" test pipe.

You're approaching the point where it's harder to find cheap/easy HP gains. So, while porting the OEM IM an EM will not give you night-and-day improvements, I think you should consider them, as they're fairly inexpensive in the overall picture. Depending on who you talk to, you may also strongly consider a MIL.SPEC 65mm TB with the ported IM.

I run a ported OEM IM and EM on my car, as wel as a MIL.SPEC-ported TB. If nothing else, the MIL.SPEC TB upgrade also includes new shaft seals, which if you haven't alreay upgraded/replaced them, 90% chance they're leaking and costing you a bit of power, as well as making your turbo work harder too. Have you done a boost leak test on your Evo recently ("recently" = at least within the last 12 months)?

I also had the ported OEM exhaust manifold ceramic coated to help keep heat in (to maximize the heat of the expanding gases coming out of the head, which helps spool the turbo quicker) and I believe it helps keep the engine compartment in general a little cooler as well.

After having done a mild street/race cam upgrade (272 degree) and turbo upgrade mods at separate times, I would actually recommend a stock-frame turbo upgrade before cams.

Yes, the turbo costs a lot more, but you'll see significantly more power gains (if you choose the right turbo upgrade) and I think it represents a better bang/buck.

I recommend you consider CBRD's BBK Lite and Full turbo options. They are truly fantastic, carefully engineered, and very well balanced (spool vs. topend power) designs.

I haven't used the FP HTA Green turbo myself, but many Evo 8/9 owners really like that bolt-on turbocharger for up to 400whp as well.

 

Thanks, for your help.

The Greddy Ti-C 80mm TBE is catless.

I have not done a boost leak test; probably need to get around to doing that.

I was not thinking of doing the throttle body but I might replace the seals when I tear into the other stuff (intake and exhaust manifolds) and put it on. As I said I am not planning on cams maybe in the future but really no plans on it. At this point I just want the upgraded turbo the 9 has, not looking for the big turbos or big numbers.

I was not sure about the manifolds (reading about them on vendor sites spoke of gains) because honestly I cannot find much information on those in this thread and what they can do. Also there really is not a lot of talk about them on the forums in general. Most of the talk revolves around big numbers, turbos, cams, and such.

I will check into the throttle body and decide if I want to take that route or just replace the seals.


Again thanks.

 

great info!