Full Blown Turbo Kit Owners Topic

[pmccut]

Originally Posted by Sterz

Wastegate is recirculating to its hard to pin point when it opens. Dropping the car off at Forman Performance today to see if we can figure it out and also get these lines checked out again.

The oil cooler fittings are my only real complaint. Definitely see if they're leaking at both sides and get some new fittings if you need. That was a pain in the ass to swap out and clean the oil all over everything.

The WG only boosting to 3.5psi doesn't make any sense if you have a higher spring in there. Loose hose?

[Sterz]

Originally Posted by FullBlown

Are the hoses under the intake manifold clamped?

Went over every hose, did a vacuum/boost pressure test and nothing was leaking, smoke tested and everything.

[FullBlown]

Originally Posted by Sterz

Went over every hose, did a vacuum/boost pressure test and nothing was leaking, smoke tested and everything.

Is it a open dump? If so, with the car idling, put your hand under the dump tube and see if there is any exhaust gas coming out.

There is a fire ring that goes between the wastegate and the flange. If it is not there, it would cause a leak.

[SmsAlSuwaidi]

Originally Posted by Sterz

Wastegate is recirculating to its hard to pin point when it opens. Dropping the car off at Forman Performance today to see if we can figure it out and also get these lines checked out again.

DO NOT GO TO FORMAN !


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[Deadspool]

Originally Posted by SmsAlSuwaidi

DO NOT GO TO FORMAN !


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LOUD NOISES

[Sterz]

Originally Posted by SmsAlSuwaidi

DO NOT GO TO FORMAN !


Sent from my IBrick

Why do you say that? Dave has worked on all of my previous cars including a WRX and an STi and has done nothing but amazing work. Did you have a bad experience there? He has always treated me with an insane amount of respect and always does his best to help me out including staying 3 hours after closing on a friday night. I am interested why you say that.

[SmsAlSuwaidi]

Originally Posted by Sterz

Why do you say that? Dave has worked on all of my previous cars including a WRX and an STi and has done nothing but amazing work. Did you have a bad experience there? He has always treated me with an insane amount of respect and always does his best to help me out including staying 3 hours after closing on a friday night. I am interested why you say that.

Had family members build cars over there, both builds that required a month or less took either 5 or 13


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[Sterz]

Originally Posted by SmsAlSuwaidi

Had family members build cars over there, both builds that required a month or less took either 5 or 13


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Hmmm...Interesting, he has always been insanely busy and before he expanded his shop had over a month of pushback for his appointments. He had an extremely small shop for the amount of clientele that he has. Since buying out the building next door, he was able to put another 3 lifts in and has gotten my cars out in a very timely manner.

[Infamous Performance]

Sterz, your car has a higher reading map sensor. When we handed it over it was running a speed density tune. It was also making 8psi of boost.

Your car was smoke tested prior to start up and leaving my shop.

We had to replace the fittings and the lines for the oil cooler. The original supplied lines leaked at all 4 fittings. The fittings had also damaged the lines internally (during assembly). You have 100% XRP equipment there now (lines and fittings). Those lines were pressure tested prior to install and leak checked post install.

If the ECM is puling timing (you mention a base map) then you wont have the load required to build boost.

[King Tut]

Originally Posted by Sterz

Anyone have any ideas as to why my car could only be boosting to 3.5 psi on the basemap? Boost pressure test was done...no leaks. Vacuum test was done...no leaks. Standard 7.5 psi spring in the wastegate. I just can't figure it out. Also came home tonight, after going in the house for a while I remembered I left my phone in the car, came out and there was a good puddle of oil on the ground. Seems to be coming from the oil cooler lines. Could have been leaking like that the whole night I was driving I checked the oil yesterday and it was at full level and now its not even registering on the dip-stick

Sounds like it is definitely the oil cooler. I had issues where mine all of a sudden developed a leak. My leak was out of the back of the AN fitting where the hose goes in on one of the lines connected to the cooler itself. I would pull the bumper and check them out. I don't see anything that could prevent you from pulling over 3.5 psi unless it is some kind of boost leak or something causing your wastegate to open really early. How did you run the vacuum lines to the wastegate?

[Deadspool]

Originally Posted by Infamous Performance

If the ECM is puling timing (you mention a base map) then you wont have the load required to build boost.

I was over 13psi on the base map before seeing even a lick of knock. just saying. Its a safe map.

[RickyB]

Originally Posted by Infamous Performance

If the ECM is puling timing (you mention a base map) then you wont have the load required to build boost.

Less advance means that there is more heat and expansion still happening when the exhaust valve opens which means the turbo has more energy to spool. I can get a turbo to spool right off idle on any engine by just retarding the ignition timing enough (of course, the engine will not be making any torque, so the boost won't do you much good).

[Sterz]

Originally Posted by Infamous Performance

Sterz, your car has a higher reading map sensor. When we handed it over it was running a speed density tune. It was also making 8psi of boost.

Your car was smoke tested prior to start up and leaving my shop.

We had to replace the fittings and the lines for the oil cooler. The original supplied lines leaked at all 4 fittings. The fittings had also damaged the lines internally (during assembly). You have 100% XRP equipment there now (lines and fittings). Those lines were pressure tested prior to install and leak checked post install.

If the ECM is puling timing (you mention a base map) then you wont have the load required to build boost.

I originally put it on the basemap because on the drive home from the shop. My car was bogging horribly and misfiring. It threw a code within 10 minutes of driving it. I assumed it was because maybe something got mixed up and you installed the OEM map sensor. When I got home I threw on the basemap to see if it ran better and it ran great. The only problem was that it was only boosting to 3.5 pounds. So as a precaution I had it boost pressure tested and vacuum tested. Sure enough there were no leaks, you did a great job with the install. And I don't believe it was a mechanical issue, except for maybe something's up with the wastegate. As for the oil cooler lines, I'm not sure but there is definitely oil leaking where the fittings mate to the cooler.

[Infamous Performance]

We are installing an upgraded turbo in a BRZ now. On that kit the oil cooler lines are leaking at the fittings too. Oil sprayed from front of car to the cans underneath. This car also has the dreaded fuel vapor lines used for coolant. FAIL. Lines are melted. Coolant was leaking everywhere too. When we went to remove the banjo fitting at the turbo to pull the lines the lines completely separated. Melted rubber inside the fittings gumming them up and completely blocking flow. Another trip to XRP to buy the parts to build new lines. For anyone with an older kit, fuel vapor line CAN NOT be used with coolant. It will melt.

I am not positive what tune you were on (rev wise) as it was simply labeled "use this tune" on the provided thumb drive (from the previous owner). I do know the "base" maps he had were the original base maps as his kit was one of the first sold.

I was over 13psi on the base map before seeing even a lick of knock. just saying. Its a safe map.

Saying it is a "safe map" blindly is taking a big leap. You also are running different fuel. CAN91 is by far the worst in the nation. My experience (so far) with the provided base maps is that they are good enough to start the car and drive it onto the dyno to tune it (much like the base maps provided by many companies).

Something is deff up as I was able to perform multiple back to back pulls with the car (logging via EcuTek) and had no bogging or other issues to note prior to handing over the keys. Did the MAP sensor fail?

Less advance means that there is more heat and expansion still happening when the exhaust valve opens which means the turbo has more energy to spool. I can get a turbo to spool right off idle on any engine by just retarding the ignition timing enough (of course, the engine will not be making any torque, so the boost won't do you much good).

Sorry, this is not my first rodeo. I have been building turbo Subarus for over 12 years. If you dont have advance timing you dont build load and you dont meet boost target. Simple as that. If the IAM is not 1.0 you wont be making boost target. Making some boost is easy, yes. But you will not reach boost target without proper load and you wont reach proper load without some timing. If a car was making 8psi and then all the sudden makes only 3.5psi and there are no physical/mechanical issues to cause the boost drop, then it is most likely the ECM or the ECM reacting to false data from a failing sensor/wiring issue/etc. Checking the IAM is fast and easy. Remember the end user in this situation is not sitting in his car hooked up making changes to the tune in an attempt to get some boost. He is running a static map.