Shuenk Turbos sent me a prototype inlet elbow to test in conjunction with a DV sandwich plate. The combination of parts will be supplied as standard equipment with the IS38+ turbochargers.
None of the parts are intended to enhance performance, the purpose for having the sandwich plate is to reduce the the chance of failure of the plastic parts in an OEM DV.
The updated inlet elbow design is to allow for clearance with the DV when mounted on top of the sandwich plate. Even though performance was not a goal with these parts I decided to flow test the turbo inlet elbow.
Results were equivalent to a standard inlet elbow (edit for clarity, equivalent to a standard aftermarket inlet elbow).
Part of the reason for having the parts was to check the clearance of the prototype inlet elbow and DV when installed on the IS38+ turbo, along with assessing the installation process on the car.
Parts clearance is good and the installation was straight forward.
Next I’ll be evaluating how the GTI drives with the sandwich plate between the DV and turbo.
Thanks for this testing feedback, Jeff. You say the airflows with this are on par with a “standard inlet elbow”. Are you referring to an upgrade type or an OEM piece?
Hey Doug, with respect to airflow I was comparing this elbow with other aftermarket elbows. Compared to stock this flows a good deal more.
Hey, i was currently looking at upgrading my is20 turbo into the Shuenk is38+ turbo you have here and i was wondering on if i should pull the trigger on it. Can i have your final thoughts after driving with it for some time and the power you’re making? Thank you
Hey Gysi, I’ve been happy with how it performs. Here’s the dyno sessions results I had before moving onto an aftermarket HPFP.
http://mygolfmk7.com/2020/02/dyno-progress-check/
That’s great because i was also planning on upgrading my LPFP & my HPFP and i was hoping to make around 400+whp on 93 but after seeing your dyno sheets i realize that itt could be completely possible. Have you ever though about about upgrading your LPFP becuase on the stratified website it states, “The OEM LPFP on the MK7 can provide fuel for up to around 400 WHP for the GTI and R.” So i feel like you should consider also upgrading this as well! Thank you by the way
You’re welcome. I hadn’t gone into using the IS38+ turbo with the thought that I’d be upgrading fueling components. It just turned out that the HPFP was showing to be a limitation so I decided to do an upgrade rather than lower boost pressure. I wanted the fuel pressure to meet the set point and the stock HPFP wasn’t achieving that at 26 psi so the only alternative to the pump upgrade would have been lowering boost. I’ll wait to see what happens with the next round of tune updates to determine if any other hardware changes are needed. I don’t have a problem with an upgrade to the LPFP if that is recommended.