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03-22-2013, 10:21 AM | #101 |
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Join Date: May 2012
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MAIC
Vehicle:2012 Impreza 4DR 5MT |
I thought he was talking about reprogramming the CVT.
You might be able to wring out a few more horses with a premium fuel tune, but I doubt there's much more power to be had without turning a wrench. The variable valve timing in our cars means we can have that race cam without giving up fuel economy.
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04-10-2013, 09:39 PM | #102 |
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Picked up my MT Impreza about a week and a half ago. Sometimes I'm able to shift smooth, other times not so much. I think I'm still applying some habits I developed over 6 years of driving the Tacoma.
I have found as many here said, it seems like it likes to shift between at least 3-3.5k. The shift between 1st and 2nd is frequently my most awkward. Not really a problem, just not real smooth. I'm also still getting used to the clutch engagement point. Sometimes I'm able to start out very smoothly, other times not so much. I didn't realize how the hill start assist worked for a while until I got to that part of the manual. Now I'm leveraging that. I like it on the steep hills, but it's kind of a hindrance on light grades. I've noticed it occasionally still holding on for just a moment while I'm trying to move forward. I just passed 1000 miles this morning or maybe yesterday. As others have said, I feel like I'm abusing the engine if I wind it out too much, but I realize it's designed for that. Dropping to third at high speeds feels like I'd be asking for trouble, but fourth has very little torque. I'm doing pretty good in terms of fuel efficiency. I filled up on Sunday which was the first tank I was able to do a true hand calc on. It came out at 32.4 mpg, with the computer reading 33.9. So far if the computer is any indication, I'm headed toward a similar or higher number on the current tank. |
04-10-2013, 10:06 PM | #103 | |
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Quote:
Consider swapping out the front differential/transmission fluid (same case) to synthetic (I used Amsoil Severe Gear), and a short shifter or the Perrin adapter (that I have). Both of these mods are fairly inexpensive and make a big difference in the feel and smoothness of the transmission. The synthetic fluid change seemed to make it both shift better and also reduce the occasional trouble engaging reverse gear (all my opinion, one person here did the Amsoil change and noticed zilch, I think it made a big difference). Now that you have 1,000 miles or so it will shift better anyway, it takes a while to break in the clutch. |
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04-10-2013, 10:32 PM | #104 |
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Yeah, a lot of those miles are highway miles cruising in 5th. I have a 32 mile one way commute to work, with about 20 of those miles being major highway and about 10 being city.
I've noticed a lot of posts mentioning the difficulty of shifting into R, but I'm not having that problem with mine. I'll eventually change out the gear oil in the front and the rear, but I figure I'll let them break in a little more before doing that. |
04-10-2013, 10:50 PM | #105 |
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I did amsoil too. Reverse is still difficult, maybe not all the time, but still at least 1/2 the time.
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04-11-2013, 12:06 AM | #106 |
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PA452, glad to hear you went with the manual. Where you from? There's a PA rt 452 not too far from me, I'm around 15 miles west of Philly.
Re. Reverse: I've gotten into the habit of shifting to reverse while rolling reeeeally slowly. Usually lets me shift with no trouble. Haven't changed the trans/diff fluid, but I want to get to that at some point. |
04-11-2013, 06:42 AM | #107 | |
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04-11-2013, 08:16 AM | #108 | |
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Join Date: Jun 2012
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Tri-State
Location: Webster, NY
Vehicle:2012 Impreza Sp 5sp Obs Blk Prl/Drk Gray Mtl |
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I also recently installed a short shift kit. I installed a Cobb shifter, but did not replace any of the bushings. This significantly shortened the throw, and made the shifter feel much more "notchy" and less vague as you engage each gear. The Cobb is nice because it allows you to adjust both the length of the throw as well as the height of your shift knob. Be advised that the shorter the throw and the lower your knob, the more effort required move the shifter (due to loss of mechanical advantage/leverage). Hope this helps. |
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04-11-2013, 09:32 AM | #109 |
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I have noticed that if the rpm is over 1000 it shifts into reverse silky smooth
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04-11-2013, 09:45 AM | #110 |
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04-11-2013, 11:45 AM | #111 |
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04-12-2013, 07:35 PM | #112 |
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For some reason my car tried to grind when engaging reverse 3 times today. No idea why. When I got home I tried putting it in reverse and had no issues at all, tried maybe 20 times and it was only difficult 3 times. I tried giving it some gas and if it is above 1000rpm it ground, but less than 1000 no issues. Kinda shoots my other theory out of the water, only difference it that is when the car is just started and it is idling between 1500-2000rpm.
I just don't get it Last edited by flyboy1100; 04-12-2013 at 08:02 PM. |
04-12-2013, 07:47 PM | #113 |
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^^ Did it behave this way before installing the short shifter?
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04-12-2013, 07:52 PM | #114 |
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N->R will grind if you don't hold in the clutch long enough or far enough.
The clutch has to go from idle speed (at least) to a dead stop before reverse can engage without grinding. |
04-12-2013, 08:01 PM | #115 | ||
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if i drive it on sunday I will do more testing, calling for another 7-14" of snow sunday, Spring? I guess to have averages you have to have years like this too |
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04-13-2013, 02:38 AM | #116 |
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Just want to put this out there.
But since I've installed my KB SS and bushings I've noticed a whole lot more noise and vibration in the cabin when I step off the gas to decelerate while in 2nd or 3rd at around 2k-4k rpm but goes away if I shift to neutral. Almost like its engine braking every time I step off the gas when I'm in those gears and rpm's. Really noticeable when I have all windows up and radio off. Sounds like its coming from the gearbox or tranny. Anyone else experience this? |
04-13-2013, 03:37 AM | #117 |
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The higher the RPMs and the lower the gear, the more engine braking you'll have. If you want less braking, go to a higher gear. The car uses zero fuel while decelerating in gear.
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04-13-2013, 03:41 AM | #118 |
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Makes absolute sense and that's what I was thinking of too. But I wonder why it became so noticable after I installed the KB SS? Driving habits are the same before and after the install. Maybe due to the stiffer bushings?
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04-13-2013, 05:47 AM | #119 | |
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It would not surprise me if this is the reason manufacturers use softer bushings in the first place--noise reduction. |
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04-13-2013, 10:41 AM | #120 |
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Exactly, There is absolutely no reverse grinding when im going very slow in 1st (parking lot) and back into a parking spot. Shifting into reverse is almost instant in this situation.
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04-13-2013, 12:41 PM | #121 |
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I wasn't moving, I started the car. Sat for a minute, and then tried to put it in gear, and it ground
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04-13-2013, 01:20 PM | #122 |
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04-13-2013, 02:44 PM | #123 |
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04-13-2013, 04:35 PM | #124 | |
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If you are going from a forward gear to reverse, you can shift as quickly as you want as long as the car is stopped. From neutral, you want to press the clutch, wait, then engage reverse. If you are in a hurry, you can quickly flick the stick up halfway into fifth then down into reverse. The fifth gear synchro will stop the clutch. |
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04-13-2013, 07:20 PM | #125 | |
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