Installed EVO III 16G, now the aftermath

[97ClipseDSM]

I installed my new Evo III 16G. I also picked up a boost controller from dejontool. I am on stock fuel injectors and fuel pump. I have plans on getting a 255 LPH fuel pump and also 550cc injectors. My question is this, i have set my boost controller to 10 lbs of boost. Is it ok to set it lower than factory spec, if not, how will that effect the performance of my car?? I have done my reasearch but my queston still seems to be, with stock injectors and fuel pump, will 10 lbs of boost be fine or should i turn it up to atleast 12 lbs. I rebuilt my bottom end of the motor about 750 miles ago so thats one of the reasons i have the boost set that low.

Thanks

 

[fwdturbobov1996]

with the 255 you need a afpr and braided line. Get bigger than 550's, those are a waste of money. 660's atleast. Then you need some way to tune the car. DSMLink, adds up real quick. Evo 3 @ 10 psi is outfolwing the t-toosmall @ 12 - 13 psi anways. Leave your boost wehre its at.

 

[RavenX]

Braided line for what? I still use my stock fpr hose and its fine waste of money imo. As for the guy 10-12psi is the max you should run. Get some 650's and a Afc. But in my opinion you should get the afc, injectors, afpr, and fuel pump all together otherwise you will just be hindering one of the other

 

[oldman]

But in my opinion you should get the afc, injectors, afpr, and fuel pump all together otherwise you will just be hindering one of the other

Agreed, but I would add a logger in there as well.

Question for the thread starter, are you able to hold 10psi in every gear with the EVO3 and 3" exhaust?

 

[blcknspo0ln]

p.s., you can't turn the boost down lower than what the WG is set to..

 

[97ClipseDSM]

Agreed, but I would add a logger in there as well.

Question for the thread starter, are you able to hold 10psi in every gear with the EVO3 and 3" exhaust?

yes its able to hold 10 psi in every gear. Im surprised i havnt experienced any kind of boost creep yet.

 

[oldman]

yes its able to hold 10 psi in every gear. Im surprised i havnt experienced any kind of boost creep yet.

I'm surprised as well, especially on an EVO3. If you're able to run 10 psi then do it, it will not hurt your car.

 

[RavenX]

Evo3 won't start to boost creep until around 18psi. Enjoy the turbo i loved it for the year i had it

 

[oldman]

Evo3 won't start to boost creep until around 18psi. Enjoy the turbo i loved it for the year i had it

Boost creep gets worse as you set the boost lower. If you are creeping at 18psi, you can be sure that you will creep even worse at 10psi, if that's even possible on an un-ported EVO3 with 3" exhaust.

 

[rowlex]

Boost creep gets worse as you set the boost lower. If you are creeping at 18psi, you can be sure that you will creep even worse at 10psi, if that's even possible on an un-ported EVO3 with 3" exhaust.

to include my experience.... at the time here are the mods I had:
95 tsi awd
evoIII
all necessary fuel support
3" turboback
2.5" tubular o2
stock sidemount stock upper pipe stock BOV

I was able to hold stock boost(12 psi) just fine all day long any gear (this was with the stock boost solenoid)

then i replaced the BOV with an HKS SSQV instanst boost creep to 26+ psi.
I didnt look at this guys mods, i assume he hasnt upgraded his BOV, thats why he can hold 11 psi.

 

[oldman]

I was able to hold stock boost(12 psi) just fine all day long any gear (this was with the stock boost solenoid)

You were probably creeping but just didn't know it because you had this huge leak at the bov after 12psi. If memory serves me right, you also had other leaks as well as the stock 2G bov. BTW what you think of the porting thread eh? Maybe you should sell the external setup and re-port the turbine.

 

[flinguist]

Here's 97ClipssDSM's mod list:Mitsubishi EVO III 16G Turbo, injen intake, 3" Downpipe, 3" N1 Catback Exhaust (no cat)(Turboback), MBC ,TurboXS H-34 BOV, Dejontool UPICP, Racing J-pipe, Dejontool Lower Intercooler L- Pipe, DejonTool 'Super Big' Sidemount Intercooler, Greddy Turbo Timer, Autometer 35 psi boost gauge, Free mods

I don't know why he doesn't have creep problems, like everyone else does with those type of mods. Maybe that BOV is leaking by bad, or possibly the turbo had a good port job done on it already.

 

[blcknspo0ln]

not everyone gets creep

on 70 degree+ days I didn't get creep on my 16G with mild porting... at <40* days i'd creep to maybe 21 psi

now at 19psi i dont' see ANY creep anymore... rock solid

 

[oldman]

not everyone gets creep

on 70 degree+ days I didn't get creep on my 16G with mild porting... at <40* days i'd creep to maybe 21 psi

now at 19psi i dont' see ANY creep anymore... rock solid

The point is turn that mbc down to 10 psi and see if it holds at 10psi.

 

[rowlex]

You were probably creeping but just didn't know it because you had this huge leak at the bov after 12psi. If memory serves me right, you also had other leaks as well as the stock 2G bov. BTW what you think of the porting thread eh? Maybe you should sell the external setup and re-port the turbine.

Yep, you are probably correct At that particular time I pressure tested the system at a friends house and I had NO leaks (after the bov install) I never pressure tested it before the new BOV was put on. it wasnt until after i put my FMIC that I had tons of leaks. The hardest one to fix being the J-pipe.

The porting thread, im glad he got it done the write-up looked really good too, I was surprised to see he didnt port the wastegate hole at all and got rid of his creep. Does porting around the flapper make it so you can open the flapper up more??? if so how much??

And I absolutly LOVE my external setup it sounds incredibly clean compared to my old o2 dump and It will be easy to re-route into my downpipe...I am tired of the external noise

 

[oldman]

I was surprised to see he didnt port the wastegate hole at all and got rid of his creep. Does porting around the flapper make it so you can open the flapper up more??? if so how much??

Like I have always said all along, the key is in the inlet. How much to port the flapper area is trivial, whether the actuator arm will extend long enough to open it that far is questionable but it's still better safe and sorry though. He was unable to port the wastegate exit because he had to worry about mating it to the o2 eliminator downpipe which can't be ported too much, like your tubular o2. Anyway I'm glad he go it to work as well.

 

[RavenX]

Boost creep gets worse as you set the boost lower. If you are creeping at 18psi, you can be sure that you will creep even worse at 10psi, if that's even possible on an un-ported EVO3 with 3" exhaust.

Shrug i was going on what happened to me. I never has creep issues until boost was set to 20psi. It would creep maybe 2-3 psi and settle back down to 20 prety quick. Then again i made sure to port the wastegate area good as well as the evo 02 housing

 

[oldman]

It would creep maybe 2-3 psi and settle back down to 20 prety quick.

That would be boost spike, not boost creep.

 

[CanadianTSi]

Get a 190 pump instead of the 255, it will make your life that much easier

 

[97ClipseDSM]

Wow, Im surprised at all the feedback im getting . Im sorry ive been at work all day and never had time to reply to some posts. I took my car on the highway right after work and i turned the boost up to 12 psi & noticed that it started hitting 12 psi and stayed there every single gear. I gave it some WOT and it held 12 PSI in every gear. 1st Gear when i gave it WOT it boosted to about 14 lbs, and then 2nd 3rd 4th & 5th it held 12 psi. To answer a few questions, my EVO III 16G isnt ported and my wastegate is 31mm. Its not 34 like the option they gave me. If anyone is looking for an EVO III 16G turbo, i would suggest ordering it from Extreme PSI because of there excellent 2G install kit that costs like $100 less than most install kits ive seen. Also, i ordered my turbo on a monday night and it arrived on wednesday. As far as turbo lag, there isnt much at all but i can definitely feel the difference in low end power VS the T-25 because the T-25 had a moster full of low end but it lacked in any top end whatsoever. The Evo III 16G barely has any turbo lag and once the boost kicks in to about 9 psi, u can definitely feel the power. Right now im only running 12 psi max, as soon as the 550cc and the 255 fuel pump arrives, ill turn it up to about 16-18 psi and then see what this turbo is capable of.

As far as my experience with the installation, lets just say that it went pretty smoothly. The 2G install kit had everything i needed to complete my install. The only problem i ran into was the oil return and feed line leaking. Its better to get it right the first time otherwise youll be pulling the manifold every time, which is seriously a pain if u have to do it countlessly because u havnt fixed the leak. You have to make sure the oil return & feed line are perfectly tight otherwise the oil will leak. Also, i suggest using some thread sealent because it will really help alot. I also suggest using an aftermarket boost controller because it makes life that much easier.

 

[oldman]

I would still suggest a leak test to make sure, 12 psi happen to be about the limit of the 2G BOV. It wouldn't hurt to make sure you're not over working the turbo boosting with leaks, but you probably won't do one anyway.

 

[97ClipseDSM]

Im sorry i forgot to add that i have a dejontool single Boost controller...if that helps. I manually set it at 12 psi, and it stays there, and turbo pulls like its 12 psi.

I did a boost leak test after the turbo install and didnt find any leaks but ill do it again to make sure. Also, the TurboXS H-34 Racing bypass valve is almost new, and it has seen less than 800 miles. I have it tightened down and setup like its supposed to be.

 

[oldman]

Maybe you are just one of the lucky few.

 

[97ClipseDSM]

Maybe you are just one of the lucky few.

$12k in repairs and gone through 2 bottom ends and 1 cylinder head in about a year (dont ask), i better be lucky this time

Ill keep on checking to see if boost creep shows itself, im hoping that it stays at 12 psi untill "I" adjust it.

 

[oldman]

im hoping that it stays at 12 psi untill "I" adjust it.

Post back when you do, also post back after you change the stock bov if things change. I can honestly said I have not run into anyone here with your setup able to hold 12psi to redline, maybe people don't talk about it unless they have problems. My 16g was able to hold 14psi but that was after an extensive port job, it used to creep to 25psi with 2.5" exhaust and a hi flow cat. I'm curious to know what made your setup different so keep us posted.