EQT Vortex - MQB Turbo

[Diggs24]

I have a brand new V1 TPC20 I'll be installing when I gather all the parts needed for MPI. I'm hopeful it will run better than the is38 hybrid I'm currently running...

 

[jimlloyd40]

I have a brand new V1 TPC20 I'll be installing when I gather all the parts needed for MPI. I'm hopeful it will run better than the is38 hybrid I'm currently running...

Why didn't you get version 2 with the ball bearing chra?

 

[ZuMBLe]

I have a brand new V1 TPC20 I'll be installing when I gather all the parts needed for MPI. I'm hopeful it will run better than the is38 hybrid I'm currently running...

What's wrong with the Mabo turbo?

 

[Mk7Matt]

Why didn't you get version 2 with the ball bearing chra?

I bought it from guy locally who never installed it in his GTI. Unit is about a year old. I wasn't really looking for a new turbo, but this one was offered to me at price I couldn't refuse.

What's wrong with the Mabo turbo?

I'm not sure there is really anything wrong with the Mabo turbo; but I doubt it will effectively push more than the 28psi I'm currently at (WGDC is around 10-12%). My WG doesn't begin opening until around 4000 rpm in 3rd and boost is 22psi at that point (running e20 on stock fueling). Not sure how much that has to do with not having upgrading fueling vs turbo vs tune.

 

[KawaZukiVdub]

I bought it from guy locally who never installed it in his GTI. Unit is about a year old. I wasn't really looking for a new turbo, but this one was offered to me at price I couldn't refuse.

Do yourself a favor and get that tpc upgraded to v2. That version may actually spool decently. Speaking of versions of TPC20... does anyone have experience running w/a v1 and a v2?

 

[Mk7Matt]

Do yourself a favor and get that tpc upgraded to v2. That version may actually spool decently. Speaking of versions of TPC20... does anyone have experience running w/a v1 and a v2?

I thought about doing that and reached out to TPC. They wanted more to convert the turbo to the BB version than I paid for the JB version. Seems they also increased the size of the compressor wheel when going to the V2 so it's not just a simple CHRA swap.

The turbo I'm currently running has a BB CHRA...there are many factors at play that affect how quickly the turbo spools. The Vortex and the XL have no issue with spool despite being a journal bearing design.

A little background...I went from JB4 to Cobb to Eurodyne. I went from running 93 to e30 on Cobb with 5150, to 93/e60 with Mabo on while I was running is20. Went from the is20 to the mabotech is38 hybrid running 93 and meth. Put down 440whp/400wtq on that setup. I ended up pulling the meth because:

1. I hated constantly watching the failsafe gauge because I was afraid that the pump might take a dump in the middle of a pull.
2. The AEM meth pump took a dump.
3. Running preturbo meth eroded my compressor wheel

Currently running e20 with the hybrid on stock fueling. Hitting 28psi at roughly 6000 rpm in 3rd (tuner regulated taper to 28). Seems I've reached the limit of the stock fueling (so I've been told).

If I were to do it all over again, I would have stuck with Cobb, and gone with EQT. I would have chosen their standard vortex and upgraded my LPFP and gone MPI at the same time. Heck, I might have been happy sticking with the is20 on their e85 tune.

And I'll leave you with this...I was able to get my TPC20 for $400; brand new never installed, including ceramic coated turbine housing, DV and waste gate actuator.

 

[Diggs24]

Dang, $400 is a steal. If you find any new XLs for $600 LMK.

 

[Wastegate13]

Ordered a standard vortex and 5 bar map today. Will arrive Friday. Once the engine arrives should have the car back together soon after. Thanks for the insight.

 

[jimlloyd40]

Do yourself a favor and get that tpc upgraded to v2. That version may actually spool decently. Speaking of versions of TPC20... does anyone have experience running w/a v1 and a v2?

In a few months I'll have experience running version 1 and 2. Getting my version 1 after almost 60,000 miles preemptively rebuilt and converted to the BB version 2. I requested the same size wheels so I could use my EQT dyno tune and not have to get a new tune because of the wheel size change. It costs $500 and includes a new oil feed line. So between the ball bearing and the Trackslag 4 "DP it should spool at approximately 3300 RPM.

 

[ErBall]

In a few months I'll have experience running version 1 and 2. Getting my version 1 after almost 60,000 miles preemptively rebuilt and converted to the BB version 2. I requested the same size wheels so I could use my EQT dyno tune and not have to get a new tune because of the wheel size change. It costs $500 and includes a new oil feed line. So between the ball bearing and the Trackslag 4 "DP it should spool at approximately 3300 RPM.

It's only $500 for the DBB update?

 

[jimlloyd40]

It's only $500 for the DBB update?

Was. I believe they are raising the price.

 

[yakev724]

In a few months I'll have experience running version 1 and 2. Getting my version 1 after almost 60,000 miles preemptively rebuilt and converted to the BB version 2. I requested the same size wheels so I could use my EQT dyno tune and not have to get a new tune because of the wheel size change. It costs $500 and includes a new oil feed line. So between the ball bearing and the Trackslag 4 "DP it should spool at approximately 3300 RPM.

Curious to hear your experience (sounds like you'll do the DP switch at the same time so it won't be a controlled before/after?). BB is heavily advertised but from my research not always optimal, especially in smaller turbos w/ high rpm.

Weighing adding the 4" dp and bb rebuild to my list, need more info/evidence first. Sounds like 4" dp for IS38 hybrid is a bit of a no-brainer, bb not so sure yet.

 

[jimlloyd40]

Curious to hear your experience (sounds like you'll do the DP switch at the same time so it won't be a controlled before/after?). BB is heavily advertised but from my research not always optimal, especially in smaller turbos w/ high rpm.

Weighing adding the 4" dp and bb rebuild to my list, need more info/evidence first. Sounds like 4" dp for IS38 hybrid is a bit of a no-brainer, bb not so sure yet.

I've had the Trackslag for awhile so it will be a direct comparison to see how much sooner the BB version spools. And while my TPC20 is being converted I'm running an IS38 and yes the Trackslag really helped spool.

 

[yakev724]

I've had the Trackslag for awhile so it will be a direct comparison to see how much sooner the BB version spools. And while my TPC20 is being converted I'm running an IS38 and yes the Trackslag really helped spool.

Ah sweet, sounds more likely my awe dp will be up for sale in the next few weeks.

thrust bearing on dbv2 v1 likely staying.

 

[JerseyDrew77]

Curious to hear your experience (sounds like you'll do the DP switch at the same time so it won't be a controlled before/after?). BB is heavily advertised but from my research not always optimal, especially in smaller turbos w/ high rpm.

Weighing adding the 4" dp and bb rebuild to my list, need more info/evidence first. Sounds like 4" dp for IS38 hybrid is a bit of a no-brainer, bb not so sure yet.

Just to be clear and in case you didn't already know, the Tracslag DP isn't 4" all the way back. It tapers down to 3 inches.