Turbo Surge - Hyundai Elantra GT Turbo & Elantra GT N Performance Forum
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post #1 of 13 (permalink) Old 11-29-2019, 11:38 PM Thread Starter
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Turbo Surge

Good evening, I have a 2019 GTN Line and its my first boosted vehicle, as its hard to find a good naturally aspirated engine in what I want. Anyway, when accelerating from 3-4k rpm, sometimes I get a surging feeling. The dealer says that when thats happening that the wastegate is on the threash hold of being open and closed. I know there is an aftermarket wastegate solenoid out there that can fix this but I don't want to void any part of my warranty for something they should tune properly. Anybody else experience this? Also, I was thinking if I had more air flow with a K&N filter or even an intake, that could help. Your thoughts?
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post #2 of 13 (permalink) Old 12-02-2019, 09:35 AM
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Hey!

Are you able to describe more about what you're feeling, and what the car does?
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post #3 of 13 (permalink) Old 12-11-2019, 03:27 AM Thread Starter
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Its like it surges in and out of boost upon acceleration. I was told it has to do with the factory waste gate, however, I am putting an AFE intake on tomorrow so I will see if a little more air flow will compensate. I will let you know.
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post #4 of 13 (permalink) Old 12-11-2019, 09:15 AM
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I use a cheap OBD2 reader and torque as a boost gauge. Might be worth the 8 dollar investment to see if you're having any issues between the ECUs desired boost, and the actual boost.

FYI: Our cars run 16lbs stock.
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post #5 of 13 (permalink) Old 12-11-2019, 07:25 PM
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It might be worth disconnecting the battery for a little while to let the computer reset. The computer may have learned something undesirable.
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post #6 of 13 (permalink) Old 12-11-2019, 10:36 PM Thread Starter
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I have a pretty nice OBD reader actually. I’ll give that a shot. Thanks!
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post #7 of 13 (permalink) Old 12-13-2019, 07:52 PM
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post #8 of 13 (permalink) Old 12-16-2019, 12:48 AM
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I get the same thing from mine. I haven’t seen any more than 15psi of boost. Ever. It’s more like 12 psi max.

2019 N Line in Space Black
Power adders in the works
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post #9 of 13 (permalink) Old 12-16-2019, 10:28 AM
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You're not running hard enough!

Gotta get the turbo nice and spooled up before you'll hit 15/16 but I've seen mine there.
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post #10 of 13 (permalink) Old 12-20-2019, 02:20 PM Thread Starter
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Here’s another thing I’ve run into. When the car is cold, there is little to no boost until it warms up a little. I think I e heard of this as a safety feature. I do t get on it in the morning but I had to get out on the road and I noticed it felt like an N/A engine for a couple of miles.
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