PTuning Turbo Kit
11-30-2016, 01:47 PM
#21
Ptuning lowered the boost, and while it doesn't hit boost cut anymore, it's also not a beast anymore (I might raise it slightly). A couple psi really changes the personality of the turbo, or I'm just getting bored with the power. Ptuning has confirmed that there's oil in the compressor side of the turbo, so in a few weeks I'm going to ask them to send the turbo to Garrett for warranty since I can't live with a turbo seal leak on a 2 month old turbo, no matter how minor. While I've had my fair share of issues, PTuning has stepped up and I expect this turbo issue to be another "no cost" resolution.
Do you have any videos of your car? I have the gt3076r + the .82 tial exhaust housing which was a PITA to find (because they were on national back order indefinitely).
12-13-2016, 06:46 PM
#22
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Anyone want to see a video of the car going through gears 1-3 just pm me your cell number and I'll send a video. The car is a beast with the 3" exhaust. With the stock exhaust it's still fast, and I really value my droneless cab so it's staying with the stock exhaust for now. Ptuning showed 447hp with 3" dual exhaust and like 435hp with stock, so it's still impressive. However, the boost response and spikes are harder to control on the stock exhaust (donut restrictor removed) and requires a little less boost. When the weather warms up, I can see if the boost creep was more of a function of the colder weather. I'm anticipating going to flexfuel next year so those who are building now, do yourself a favor and get wahlbro 400 and 2000cc injectors so it's e85 ready. The new EMS should help control the boost since I'm in love with my stock exhaust. It will be interesting pushing 600hp out of the stock one but I think the open dump lightens the load.
Last edited by S20; 12-13-2016 at 06:56 PM.
12-13-2016, 11:08 PM
#23
The PTunings waste gate is re-circulated? If so on a stock Exhaust it's creating alot of pressure. Hence the creep. The waste gate literally can't Expell the air it's trying to bypass away from the turbine. Depending on "how" bad the creep is, must be manageable or tuned how it is cause ur racing on it 
12-14-2016, 10:00 AM
#24
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The PTunings waste gate is re-circulated? If so on a stock Exhaust it's creating alot of pressure. Hence the creep. The waste gate literally can't Expell the air it's trying to bypass away from the turbine. Depending on "how" bad the creep is, must be manageable or tuned how it is cause ur racing on it
12-14-2016, 02:57 PM
#26
Oh he is open dump. (Last sentence)
I'm sure it works both ways. I know the common explanation of boost creep. IWG or EWG makes no difference, placement, and diameter, recirc or open does tho. That's why I asked.
In his case Im theorizing their is no path of least resistance tho. If he is recirced. On a stock exhaust.
Not sure what the boost disc is.
Edit: does it extend through the pipe to create a longer separation of waste gate dump and Exhaust? .... Found a pic I think, looks to be just a restrictor.
Still impressive considering how much more efficient it could be. It's really interesting how much whp/wtq u can gain.
With that much back pressure and being a single scroll the overlap and opposing cylinders are being contaminated. Not theory, fact.
I'm sure it works both ways. I know the common explanation of boost creep. IWG or EWG makes no difference, placement, and diameter, recirc or open does tho. That's why I asked.
In his case Im theorizing their is no path of least resistance tho. If he is recirced. On a stock exhaust.
Not sure what the boost disc is.
Edit: does it extend through the pipe to create a longer separation of waste gate dump and Exhaust? .... Found a pic I think, looks to be just a restrictor.
Still impressive considering how much more efficient it could be. It's really interesting how much whp/wtq u can gain.
With that much back pressure and being a single scroll the overlap and opposing cylinders are being contaminated. Not theory, fact.
Last edited by MorngWoodStewie; 12-14-2016 at 05:16 PM.
12-16-2016, 07:15 AM
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I would think there are pictures somewhere on here. It is a thin metal disc that goes between the V band flanges on the downpipe and midpipe. They used to sell different sizes, but have come to the conclusion that the included one works best and has a very small effect on horsepower. You remove it if you want to run more than 15 psi.
