EVO III BIG 16G Helppp!!!

[danielsl1999gsx]

uhhh... so spent my whole thanksgiving break dropping in all my mods.. and once everything was in and ready to bounce, Evo 16g, Evo 9 MR FuelPump,FIC 650cc, etc.. i turn her on and she sounds niceee!! so i let her warm up and everything seems good. no service engine light, or anything. But once i got her on the Road she started missing like crazy and overboosting and not even holding any boost. i check if the wastegate was working and it was. Then it would have trouble staying on,or turn on from a cold start. I mean it got pretty bad to the point i threw in my stock 450cc injectors and to see if that would help. it did little, i mean i can hold boost from 2-5 but 1st is still overboosting. and i am still having the trouble turning her on from a cold start. im thinking it could be the computer and timing maybe or a hose that i havnt plugged in or maybe a sensor. but i really dont even know now.
i know that this turbo are common for overboosting but its a brand new one, didnt think the problem would come so quick. i have to get to school with this car everyday so help is needed quick.

 

[richardc475]

What are you tuning with? you cant just drop in injectors and expect it to run properly.

 

[talon913]

i ran my old big 16g on a stock 450cc injectors and a evo 9 fuel pump and maf mods and it ran perfectly fine on 16psi.you might have a leak of some type somewere??pre exhaust,boost leak,vacuum unplugged?..how much is your boost set on??mine overboosted bad when i first through it on later i figured out the mbc was a piece

 

[gofer]

a boost/vacuum leak or a fuel leak will cause all of the above. its not your ecu its something that you touched doing the install to cause the problem... go over everythink you touched with a fine tooth comb and check and recheck. BLT (boost leak test) if nothing else.

 

[synthetek]

i know that this turbo are common for overboosting but its a brand new one, didnt think the problem would come so quick.

By over boosting do you mean boost creep? It has nothing to with the age of the turbo its going to do it if its new or old. Search boost creep for more info in fixing that issue. Did you boost leak test after installing all the new stuff, and do you have an AFC or DSMlink or some way to control the new injectors?

 

[JusMX141]

Boost creep doesn't come on with age- it can happen with an out-of-the-box turbo if your exhaust is too unrestricted.

Start eliminating things that may cause the issue- leave the 450's in until you get something to tune with, and run a vacuum line straight from a boost source in the lower intercooler pipe to your wastegate actuator.

 

[danielsl1999gsx]

yeah ok update.. the car is holding boost a bit better now i think its stock set at 14 psi. but now i have a huge problem starting it up in the morning.. it has to die about 6 times and me constant gassing it to warm it up alittle. this is really the problem now.. with the 650cc it would warm it self and would not die at all.. only happens with the 450cc. ok what is the wastegate hose suppose to be connected to?

 

[richardc475]

ok what is the wastegate hose suppose to be connected to?

Please tell me you had it connected in the first place.

i ran my old big 16g on a stock 450cc injectors and a evo 9 fuel pump and maf mods and it ran perfectly fine on 16psi.you might have a leak of some type somewere??pre exhaust,boost leak,vacuum unplugged?..how much is your boost set on??mine overboosted bad when i first through it on later i figured out the mbc was a piece

Lean Lean Lean.

Don't do what this guy did, your internals will hate you.

 

[crash89]

Check the coolant temp switch/sensor. That tells the ecu how much fuel to use on cold starts. If its not reading properlyor at all itll be way hard to start if it even does at all. I had the same issuse with starting not to long ago.. Turns out I took that switch out and had my aftermarket temp guage in that place. Swapped that back over and starts up first try everytime.

 

[talon913]

Please tell me you had it connected in the first place.



Lean Lean Lean.

Don't do what this guy did, your internals will hate you.

the car did hate me but it still runs up to this day since the two owners dropped some 560cc in it

 

[danielsl1999gsx]

Where would i find that coolant temp switch? ### its every morning.. car starts for like 1 sec dies, start it up again 3 secs dies.. gotta do this for like 3 mins giving it gas till she warm then she stay alive.. but this never happen with the 650cc only the 450cc.. and about boost creep how would i eliminate that thats making my exhaust to unrestricted? and where do i run the wastegate hose to?

 

[GooeyGus]

On a 1g it's the part of the thermostat housing. I would guess it's the same as a 2g.

If I remember right, there are three connectors on the thermostat housing. One is for the AC fan, one is the the temp gauge, and the other is the engine coolant temp sensor.

 

[95talongirl]

yeah ok update.. the car is holding boost a bit better now i think its stock set at 14 psi. but now i have a huge problem starting it up in the morning.. it has to die about 6 times and me constant gassing it to warm it up alittle. this is really the problem now.. with the 650cc it would warm it self and would not die at all.. only happens with the 450cc. ok what is the wastegate hose suppose to be connected to?

What are you using to tune with?? I don't like how you are saying you "think" it's set to 14psi. Do you have a boost gauge other than the stock one? It sounds like a vacuum leak/boost leak.. what's the base idle set at? Maybe you have a leak from the BISS? I know my car did... among many, many other places. Fixed all the boost leaks, made sure the idle was set correctly, and the stalling was fixed.

 

[danielsl1999gsx]

im not tuning with anything, i wanted to see if it would run with those injectors, as my friend did and he car ran fine. i just gona have boost leak test it then. it seem that the idle is set at 500 rpms which i think is low.. i bought the car like that. then i have no idea where the biss is. then the over boosting at high rpms still occurs. but i need check the thermostat housing plugs to see if everything is plugged in

 

[95talongirl]

Stock idle should be around 800rpm. I have mine set at 1000, since it had issues stalling when coming back to idle. The BISS is the "base idle set screw" it is on the throttle body, and you use that to adjust the idle. It should run with those larger injectors, but I'd be looking into something to tune it with for sure.

 

[danielsl1999gsx]

alright well i do seem to have a leek somewhere around the intake i cant find it yet tho.. but i have set teh idle around 850 soo that taken care so lets see what happens tomorrow morning when the test comes. and any one like to tell me where i have to hook up the wastegate hose?

 

[evancraig]

i am a little new to this still, but just put a rebuild head on my 97 tsi. look at the underside of the hood on the passenger side, should tell you how to route all your vaccum hoses.

 

[anmGST]

There should be a hose from you MBC or stock BC to the wastgate. The in side is from the intake pipe then the outside is to the wastegate.. You do have a MBC and boost gauge right? The over boostong could be the boost controller is hooked up backwards..

 

[kimcheefists]

The wastegate hose connects to your MBC or wastegate/boost control solenoid depending on which one you're using. If not just hook up the hose directly to the nipple on your J-pipe.

The first picture is a regular diagram of the hoses. The second picture is another way you can connect the wastegate hose.

 

[LiquidX]

For your porting needs

http://www.dsmtuners.com/forums/new...s-about-porting-my-evo-iii-16g-wastegate.html

 

[danielsl1999gsx]

wow... yeah its my hoses... i think they all F'ed up... looks nothing like this.. but ima post a video about the starting up problems.. ### i think ima take it to Road Race Engineering but i wana know what you guys think so they dont go bsing all this stuff i need to fix the problem

<object width="425" height="344"><param name="movie" value="http://www.youtube.com/v/oghAbMJ3I6Y&hl=en_US&fs=1&"></param><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="http://www.youtube.com/v/oghAbMJ3I6Y&hl=en_US&fs=1&" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="425" height="344"></embed></object>

ended short but what you guys think?

 

[GooeyGus]

I think you just need to tune for those injectors, mixed with a little vac/boost leak.

When it's cold, the car uses much more fuel to start. Now add bigger injectors and you get WAY more fuel and the car is trying to start pig rich.

 

[EclipticalGS]

check your spark plugs....do a boost leak test. FIAV deleted??

Please tell me you had it connected in the first place.



Lean Lean Lean.

Don't do what this guy did, your internals will hate you.

. This is a not so true statement. E3B16G w/ 550's, fpr, 190 fp. Running 17 psi on a stock maf, no fuel cut, afr's are damn near perfect.

Anyway, check spark plugs, look fro any hoses disconnected, follow up with a BLTest.

While you were messing with fuel, did you forget to plug in you crank sensor by any chance..

 

[tkhaab_94]

Maybe check what code your car is throwing?

 

[JFZERO ECLIPSE]

Check plugs, Fix your exhaust leak...Do a BLT, something definetely dont sound right with it...sounds kinda clanky...