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PewterCam
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I don't know anyone else running a mishimoto cc with a gutted pcv either. I do know on my car a gutted pcv with a check valve on a universal cc was passing oil through it at full throttle. It stopped when I went upr dvcc. Since installing the updated oil separator/pcv the dvcc fills at 1/2 the rate it used to. So the new oil separator is for sure a worthwhile investment for the early 2015 cars.
therealdannye
President of Capitol S550
Exactly what you've described. Oil getting through and into your engine. That's not fun in any scenario. Oil doesn't belong there. Can foul plugs, can reduce octane (bad if you're tuned for 93), and smoke out of your exhaust.
Upgrade to the UPR DVCC and get a Boomba check valve. Best combo on the market.
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evan546
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- #21
I really feel as if it has to do with the PCV system as it started happening in the parking lot at idle. There also isnt any weird engine noises and acceleration is still there (no loss in compression).
My second issue is that the turbo that vargas gave me will not stop over boosting i think that the 15psi wastegate is causing the issue and could i remove the vacuum line to the wastegate and it should hild 15 psi correct?
Juben
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If you're running a 15 psi wastegate without a tune, that's bad. The car runs 18 or so psi from the factory, but the WGDC tables and related are set up for the factory spring pressure. Adjusting (increasing) the spring pressure without being tuned for it can cause some problems, like overboosting.
evan546
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- #25
I wanted to know what I am doing wrong as when i was told the turbo was the issue i contacted vargas and made sure that their turbo could run on stock tune....
Ive tried contacting them but all their saying is that they did run it on stock tune which is literally impossible from my experience.
Ive tried contacting them but all their saying is that they did run it on stock tune which is literally impossible from my experience.
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VargasTurboTech
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When doing our stage 1 testing, we actually ran this exact turbo, by exact I mean, this is the turbo on our car, that Evan now has. When testing stock frame upgrades we always run the car for a while on the stock tune to make sure all is well, as we know people will sometime go back to a stock tune for any number of reasons. We ran the stock tune for over a month, we never had a single overboost code or single issue. The car ran like stock. Why Evan is having issues, I am not sure, but it sounds like he is having more than one issue. I would get the car to a qualified shop, and see what is going on.
Evan for the smoking issue. I would point to your PCV for sure. When we first did our UPR Catch can install, they sent us the lines with the check valves in backwards, and on start up, the car smoked like a train at idle due to not getting the proper vacuum on the crankcase. I swapped the Check valves to their proper orientation, and it went away. I would do the UPR catch can, with boomba check valve, and do not gut your factory PCV as a start point for the smoke.
Weather Man
Persistance is a Bitch
This:
"We have taken the stock turbo, and completely gotten rid of the main bottle necks, including the small compressor wheel, and extensively modified the turbine housing for increased flow."
And:
Stock tune.
Don't add up. If you are telling guys they can install this and run stock tune, you are in for a lot of "fun" conversations.
I could see install and drive carefully part throttle to the tuner, as in immediately.
VargasTurboTech
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We appreciate your opinion. A turbocharger is a mechanical fan placed in the exhaust stream, it does nothing on its own. It is 100% controlled by the electronics, the DME is load based, and controls boost based on many variables, if it see to much boost it simply opens the gate, this gate will work fine on a stock tune we drove it that way for a month as stated.
For a quick example. We have a BMW with a set of turbos on that can flow literally enough air for 1200WHP, the stockers flow enough for 500WHP. When we got the kit on, we wanted to check for leaks, and put some easy miles on the car, loaded up the stock tune, and drove it for two days, zero issues. That's the beauty of these newer systems, that can adjust for many things, from altitude, to ambient temps, etc. Will the car be perfect running the stock tune? Of course not, anytime you make changes you need to tune the car for them, but in todays computer controlled vehicles, throwing a larger turbo on there, and not tuning just means you do not have access to the power potential, but it will not harm the vehicle in any way, if he is getting over boost codes, something is up. Its possible there is too much preload on the actuator etc.
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Weather Man
Persistance is a Bitch
I hear you, but the ability of the turbo pushes the ability of the electronics to keep the motor unhurt right to the edge. The peak boost number may not change, but the area under the curve probably changed quite a bit.
Bottom line is that the OP has a hurt motor. It shouldn't take a couple more to figure out that stage 1 guys should not run without a tune.
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