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#16
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I asked the service tech was there any problem and did the mechanic test drive it. He looked worried and said the mechanic thought the 1st to 2nd shift was harsh. I smiled and said, 'Excellent'. We laughed but I think his was a nervous laugh. I 'test drove' my car to a dyno shop along streets and highway routes. It feels absolutely Fantastic! Shift are prompt, firm and quick in all gears. Shifts are even instant at part throttle, cruising speed. Just the way I wanted it. I am hoping for at least a 50-75lb-ft of torque and horsepower increase from the other runs I have done on the dyno, between shifts. Is it worth the cost? Nope! Just get a tranny cooler installed if you want to try to preserve your tranny. It IS worth the cost personally for me though since I have a very high value for instant shifts. I also have no intention on every changing this tranny no matter what I throw at it and I personally believe this to be a critical factor to this. I hate to be subjective on these things but I currently have no data to show how it shifts. It sucks so here I stand. It is pouring down raining at the track and I had problems on the dyno so nothing to show. That is all for now.
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Kevin Thomas 1997 2.2ltr Subaru Impreza Outback Sport Wagon (AWD/Auto) 13.03@100mph 1989 2.7ltr Subaru XT6 (AWD/Auto) 15.912@85.93mph 1996 3.3ltr SVX (AWD/Auto) 15.070@91.38mph ***R.I.P*** 2010 RAV4 AWD Sport (13.717 @ 99.19mph ) 2015 Honda Fit LX CVT (15.2 @ 90mph) Last edited by Myxalplyx; 10-26-2007 at 04:30 PM. |
#17
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Confirmation
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Just wanted to get confirmation that if #1 and #2 is the case (I don't have the car in my hands now). Will the valve body solve the problem of slow shifts (Bypassing whatever the ECU is doing as the theory goes)? People have been talking about this for years and I have been staying 'mum' for a while. If you see this, please let the folks on the site know. Thanks!
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Kevin Thomas 1997 2.2ltr Subaru Impreza Outback Sport Wagon (AWD/Auto) 13.03@100mph 1989 2.7ltr Subaru XT6 (AWD/Auto) 15.912@85.93mph 1996 3.3ltr SVX (AWD/Auto) 15.070@91.38mph ***R.I.P*** 2010 RAV4 AWD Sport (13.717 @ 99.19mph ) 2015 Honda Fit LX CVT (15.2 @ 90mph) |
#18
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Well having driven SEVERAL svxi... This is by far the quickest shifting one I have ever driven. Granted the 4.44 trans shifts a little faster than stock, this valve body shifts like Lightning. Not really too uncomfortable but just quick and responsive. I cannot wait to see what this will do WOT at the track... I have only been able to drive it on the streets, and I do not stress test customer cars on the street to their full capabilities... More to come after Sunday
Tom |
#19
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How much does the upgraded valvebody cost? I should get one...
Nm... i'm going 5 speed soon anyway
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Tim 92 Liquid Silver SVX 5MT 2009 BMW Z4 (Gone) 2012 Camry V6 SE |
#20
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Agreed. Shifts are very fast. And yes, they are actually FASTER, not just harder, which seems to be what you get with a tranny resistor. Even the downshifts when your slowing down are super super fast
if I was planning on staying auto, id do the upgrade myself
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R.I.P Cool Signature. You're gone but not forgotten. I mean, sure, I kindof don't remember some of the finer details..but I remember you were funny, and at one point you said spaghetti in Dutch....but definantly not forgotten |
#21
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It is good. I had it done a looong time ago. Earl now has that transmission in storage somewhere, but now that I have the regular 4EAT (4.444 version) I can't stand how lazy it shifts....
Take out the resistor and it is a little better than that
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'93 Anniversary Edition SVX 122k - 3.7 FD 5MT Swap, ECUtune 1a1, Bontrager RSB, Mad Restoration underway! '20 Honda Ridgeline Custom Oil Caps, Battery Bars, Phenolic Spacers for sale here: http://www.x35design.com |
#22
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Earlier in the thread, opening up an orifice to increase flow is mentioned as a means dropping temperature, which makes sense. Increasing the speed and firmness of shifts however must surely require an increase in line pressure and adjustments relating to the pressure regulator valve.
The pressure regulator is controlled electrically via solenoid A, which is pulse width modulated by the TCU. Therefore one means of increasing line pressure would to alter the modulated signal, but this is not easy to achieve and is something which Level 10 can not have done under the circumstances. Disconnecting the resistor has an some affect but is not desirable as it negates an important function. We are therefore left with modifications to the regulator valve or more likely the pressure modifier valve which controls it. Evidently Level 10 refer to this as modification as a “Hydrosystem”. None of this is rocket science, but it does require hands on physical analysis of of a transmission, in particular the valve body. We have claims that successful modifications has been carried out commercially by a member here, but details have not been published for obvious reasons. Experiment is likely to involve only the valve body. Who is going to leap into the fray?
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Trevor, New Zealand. As a child, on cold mornings I gladly stood in cowpats to warm my bare feet, but I detest bull$hit! |
#23
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I have a level 10 built tranny. The fluid flow is incredible. I remember trying to measure it once, and it was very fast. I also run an external oil cooler.
I think this was a smart mod. Although expensive, you probably extended the life of your very expensive transmission. If you don't modify the motor a lot, it should give you a lot more service. Question for you regarding your modification. Did you do the resistor mod with the valve mod? Do you remember if Level 10 recommends the resistor mod?
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Chuck D. 1992 Subaru SVX LS-L - Heavily modded turbo 2002 Subaru Impreza WRX- Turboxs stg3 & Susp. Mods |
#24
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I am wondering how the level 10 system compares with Lan's ecutune transmission upgrade...
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#25
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Mikes transmission rebuild costs about the same as a stock rebuild. As long as he is replacing the same parts, I would think it would be a no brainer to give it a try.
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Chuck D. 1992 Subaru SVX LS-L - Heavily modded turbo 2002 Subaru Impreza WRX- Turboxs stg3 & Susp. Mods |
#26
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http://www.subaru-svx.net/forum/show...hifts+resistor Level 10 told me that the resistor mod is not necessary with the hydrosystem. The valve body will still function as it should.
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Kevin Thomas 1997 2.2ltr Subaru Impreza Outback Sport Wagon (AWD/Auto) 13.03@100mph 1989 2.7ltr Subaru XT6 (AWD/Auto) 15.912@85.93mph 1996 3.3ltr SVX (AWD/Auto) 15.070@91.38mph ***R.I.P*** 2010 RAV4 AWD Sport (13.717 @ 99.19mph ) 2015 Honda Fit LX CVT (15.2 @ 90mph) |
#27
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Tom |
#28
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In the past, Pat Barrett (Owner of Level 10) used to have levels of shiftness that varied. Customers could choose from a range of somewhat quicker than stock to as far as quick/firm/instant. They no longer have this option. There is only one way it is done and that is the quick/firm/instant. You may confirm this by calling Level 10 and get updated pricing. It is hard to justify the pricing. This mod saved my poor Impreza Outback tranny's life after I constantly abused it and it still will twist the steering wheel betwen shifts with the tiny hp it makes now. A pic of a sample dyno run of my Outback from 1st gear to 3rd with the Hydrosystem is the best way I could show what I am describing. The 'firm' shift I am referring to is the 60-70ft-lbs of torque jump between shifts. That's a jump you can feel in your neck. I am not sure how this will look on the SVX from 1st to 3rd gear but if it is similar or better, it will be a huge improvement between gears than this---> http://subaruxt.com/forum/files/tomy...l-hptq_167.jpg This is the dyno run with the ToMyx intake. Look at the dip and lost of torque between shift. The plan is to overlay the ToMyx runs with SVX in it's current state. Amongst other repairs Tom did, he repaired the AWD (I couldn't run AWD on the dyno when I went to test the ToMyx/Dale cold air setup and Hydrosystem [Valve Body Mod]). You'll have to be the judge if it is worth the cost from a performance perspective. Added transmission reliability just seals the deal for me.
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Kevin Thomas 1997 2.2ltr Subaru Impreza Outback Sport Wagon (AWD/Auto) 13.03@100mph 1989 2.7ltr Subaru XT6 (AWD/Auto) 15.912@85.93mph 1996 3.3ltr SVX (AWD/Auto) 15.070@91.38mph ***R.I.P*** 2010 RAV4 AWD Sport (13.717 @ 99.19mph ) 2015 Honda Fit LX CVT (15.2 @ 90mph) Last edited by Myxalplyx; 03-01-2008 at 11:38 AM. |
#29
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Good. Thanks for the info. I may go ahead and connect my resistor. Under full throttle the shifts are fine, but under normal easy crusing at low speed the 1st to 2nd shift is increadibly harsh. Hopefully it will not be too bad with the resistor reinstalled.
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Chuck D. 1992 Subaru SVX LS-L - Heavily modded turbo 2002 Subaru Impreza WRX- Turboxs stg3 & Susp. Mods |
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