Evo16G turbo Comming. which one do I get?

[polonez]

Ok Guys. Ive made up my mind. Just bought an greddy profec bspec 1 and am ready to order an MHI evo 16G from Kinetic Motorsports.
Mods are
Im pretty stock for the time being

Intake and exhaust comming shortly. 1G BOV already in. Hardpiping the intercooler whne turbo comes. Walbro 190 comming. and 550 injectors in the future. IPT shift kit should be here this week, This is an auto BTW.

Now ive been reading alot about boost creep. I plan not to boost anything over 15lbs until i upgrade the injectors. Now Will boost creep be an issue?
Will getting the bigger flapper installed by them help the creep?
I plan to port the Exhaust mani and the o2 dump pipe to gasket match for the EVO turbo.
Will the bigger flapper make the creep worse or help it. This is where im confused...

 

[blcknspo0ln]

Ok Guys. Ive made up my mind. Just bought an greddy profec bspec 1 and am ready to order an MHI evo 16G from Kinetic Motorsports.
Mods are
Im pretty stock for the time being

Intake and exhaust comming shortly. 1G BOV already in. Hardpiping the intercooler whne turbo comes. Walbro 190 comming. and 550 injectors in the future. IPT shift kit should be here this week, This is an auto BTW.

Now ive been reading alot about boost creep. I plan not to boost anything over 15lbs until i upgrade the injectors. Now Will boost creep be an issue?
Will getting the bigger flapper installed by them help the creep?
I plan to port the Exhaust mani and the o2 dump pipe to gasket match for the EVO turbo.
Will the bigger flapper make the creep worse or help it. This is where im confused...

here's the rundown:

boost creep is caused by the wastegate entrance and pathway to the entrance not being big/flow enough. irregardless of if it's a standard 31mm or 38mm flapper door. PORT PORT PORT.

boost creep is common when a DSMer tries to run lower boost, which is your case. you will notice that when you get your tuning dialed in and turn up the boost to 20psi, you will not notice the boost creep as much.

the 38mm flapper door has been an issue when used in a high boost application. It is not that common, but there have been occurances where the flapper door will blow open when trying to run higher boost (25+psi). That is the reason why most people (mid/highly modded dsmers) will recommend you to stay with the stock 31mm. There are also others that will recommend the 38mm flapper door because they have not seen any ill effects (myself and others). take that for what it's worth..

it is a common misconception that dumping the wastegate will help reduce boostcreep, when it does not. Once you understand the theory, you will notice that boost creep happens inside the turbine housing and not really so much after it.

on a last note, if you are upgrading to any sort of larger injector (even on your stock ones), you will need to get some sort of ECU compensation. for your mods, I would recommend an SAFC or SAFC II w/ a datalogger or go right to DSMlink..

goodluck, hope that helps

 

[polonez]

yep it helps alot..
Injectors and pump are a future mod which iwll be with a SAFC2 for sure.
For now I plan to run near stock boost with the 16 G. Till I piece everything together.

Its just hard to shell out all this cash at once.. It would be nice though

So is there any reason why I should spend the extra 75 bux to get the bigger flapper put in?
i plan on running 20lbs max when all the mods are in.maybe even less so it blowing open wont be an issue. But what gains will it give me if i shell out the extra cash? worth while or not?
thanks guys!

also i read that boost creep is not as much of an issue with stock exhaust as compared to 3inch? whats the deal there. I plan to get 3 inch soon. But if it will make it worse ill stick to 2.5

 

[blcknspo0ln]

yep it helps alot..
Injectors and pump are a future mod which iwll be with a SAFC2 for sure.
For now I plan to run near stock boost with the 16 G. Till I piece everything together.

Its just hard to shell out all this cash at once.. It would be nice though

So is there any reason why I should spend the extra 75 bux to get the bigger flapper put in?
i plan on running 20lbs max when all the mods are in.maybe even less so it blowing open wont be an issue. But what gains will it give me if i shell out the extra cash? worth while or not?
thanks guys!

also i read that boost creep is not as much of an issue with stock exhaust as compared to 3inch? whats the deal there. I plan to get 3 inch soon. But if it will make it worse ill stick to 2.5

i'd spend the money on porting it, rather than a flapper.. if you're tight on money. oh and trust me, you'll be boosting over 20 psi in no time.. i can't wait to say I told you so

again, you have to understand boost creep to get my statement above.. it happens on stock exhausts AND larger exhausts. the turbo doesn't care if the exhaust is 2.5", 3" or even 4", it WILL creep if not ported correclty (explanation: boost creep also has to deal with the amount of exhaust flow you are putting out, yes, the smaller diameter your exhaust, the lower your exhaust flow will be and the less likely youw ill creep.) . if your goals are what you say, 2.5" will be perfectly fine for you

 

[polonez]

hmm... lets throw this into the pot. I have a guy that has a Garrett T3/T04b V-trim cheap....
worth it? i guess this will bolt right up and not need the install kit? also i know these are used for high HP cars but what about for intermediate use? like 15lbs? 300 hp or so?
what would supporting mods need to be?

 

[blcknspo0ln]

hmm... lets throw this into the pot. I have a guy that has a Garrett T3/T04b V-trim cheap....
worth it? i guess this will bolt right up and not need the install kit? also i know these are used for high HP cars but what about for intermediate use? like 15lbs? 300 hp or so?
what would supporting mods need to be?

15 psi will not get you 300hp with a to4b.. supporting mods are up top, where it says tech guide also note the type of turbine housing that this to4b uses, if it's the mitsu bolt on, it's good to go. If the flange is t3 style with the garrett 5 bolt hotside, you will need custom fab done to make it work

 

[polonez]

do you figure its a better bet to stay with the 16g?
im leaning that way

 

[polonez]

i bet you will be telling me told you so...
boost is like crack... once you have it you cant have enough!!!

 

[Thomas91169]

get the 16g with the portwork done. if it creeps well have to deal with that later, maybe slap the t25 back on and send the 16g out for a bigger flapper if it comes to it.

a bigger turbo means more money will be needed to support it, and it doesnt sound like you have that. so stick with the smaller tried and true ones. remember, later down the road, you can always sell the turbo, injectors, fuel pump and safc/whatever for a good amount of money, and then buy a bigger setup. i sold my evo16g, 550's, 190lph, fmic and sbr cast manny, my dell laptop and dsmlink setup for almost 3k total. i think i spent 3k on it, so i used it for a good year, then sold it and made almost all my money back.