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Old 06-28-2020, 04:45 PM   #1
wrxfan100
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Default 2018 sti question

Hey Guys,

My 2018 STI is my first manual car and I'm still learning how to drive it. The thing that I'm having the most problems with is when I'm doing a rolling stop in 2nd gear or downshifting into 2nd gear at around 4-8mph the car starts shaking for few seconds and it goes away once i accelerate. I'm being told that's the engine that's lugging is there a way to prevent that ? I was told that you shouldn't go into 1st gear unless the is pretty much stopped.
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Old 06-28-2020, 08:01 PM   #2
Unabomber
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Its technique you will learn and you don't need to use first only when stopped. You'll learn when to go to 2nd and when to go to 1st. No worries, learning happens for every owner from new to old as I drove a FWD for 10 years and promptly stalled my Subaru many times in the first few weeks.
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Old 06-28-2020, 08:33 PM   #3
Samurai Jack
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Ever notice what the engine RPM is when you downshift at 6 mph into 2nd?

Your rpm is too low, hence the lugging.
As was already stated, something you will learn over time is how to match engine rpm, shift points, clutch and engine balancing so you are not slipping the clutch, and many other things.
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Old 06-28-2020, 08:55 PM   #4
wrxfan100
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Quote:
Originally Posted by Samurai Jack View Post
Ever notice what the engine RPM is when you downshift at 6 mph into 2nd?

Your rpm is too low, hence the lugging.
As was already stated, something you will learn over time is how to match engine rpm, shift points, clutch and engine balancing so you are not slipping the clutch, and many other things.
How do i prevent this? Would adding a little gas before shifting into 2ND gear prevent the lugging ?
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Old 06-29-2020, 10:00 AM   #5
Comikazi
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Quote:
Originally Posted by wrxfan100 View Post
How do i prevent this? Would adding a little gas before shifting into 2ND gear prevent the lugging ?
You would need to continue to add gas as you slip the clutch, a little more than usual. That will let you take off in 2nd when you are a bit too low in the RPM range.

These engines do not like to be in the low RPMs. Around the 5mph mark is slow enough to shift into first. I haven't driven an STI, but in my current WRX and in my older Legacy GT I've found there is this awkward speed where it feels too fast for 1st but too slow for 2nd. If I need to take off quick I go into 1st, if not I use 2nd and slip the clutch.

But like everyone else is saying, it just takes some practice to get the hang of what feels right. I find it's best not to focus on exact speeds and RPMs, you can just feel what the car "likes". Could just practice different things in a parking lot or something until you figure out what feels right.
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Old 06-29-2020, 10:03 AM   #6
rtv900
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Quote:
Originally Posted by wrxfan100 View Post
How do i prevent this? Would adding a little gas before shifting into 2ND gear prevent the lugging ?
there's no reason you shouldn't be able to get it in first that slow
I do it all the time as my driveway is a long downhill run and I put it in first as I roll in so I can just let the engine brake it down the drive
I'm going the speed range you are talking about, it takes a bit more force since it's first but does not grind or so anything bad

If you are shaking in 2nd that is your indication you are WAY too slow for 2nd
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Old 07-03-2020, 09:40 AM   #7
seaYa
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Bottom line is you have to just keep driving it. You will get better. Ive driven manual transmissions for almost 20 years now and I am still learning and practicing different techniques. So keep at it!

Such a shame this is going to be a thing of the past
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