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Old 12-03-2001, 01:26 PM   #1
ashtaron14
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Talking Tested out FWD...

Well, today I popped my hood, opened my fuse box, and put a fuse in the part that said FWD...

Then i went to school...

1st off... The dash had a "FWD" light on the dash once I turned on my car...

Then I backed out of the driveway...

Put my slush box into 1st, pushed hard on my throttle, and instant spin out!



Lifted from the throttle, then gently drive the car, did a few more spinouts before arriving at school...

After my class... I noticed that it just began to rain...

This time, the spinouts lasted a lot longer and the car would spin like a few seconds... I had to put it into second gear quickly so the car could gain more traction...

Overall... it was a fun experience, but with my rear sway bar I did notice a tad too much oversteer

Ja Nei!™
Sunny
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Old 12-03-2001, 01:50 PM   #2
IggDawg
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Thanks for posting! I ws wondering if it was safe to do this. I'm glad someone tested it out. I wsa actually going to post for someone to tell me if it was OK today.

Which fuse did you use? the spare 30A they leave you in the fusebox?

Does anyone know if this has any long term side effects?

-IggDawg
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Old 12-03-2001, 02:27 PM   #3
Asinus
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Hmmm.... I'm Can someone explain? FWD? why?
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Old 12-03-2001, 02:39 PM   #4
IggDawg
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There's a slot in your engine bay fusebox for FWD mode. For diagnostic purposes I think. I assume it completely disengages the clutch that powers your rear wheels. I've never used it, but I like to know as much as I can about my car. thus the interest. If you have a stick, I don't think you'll have it. Just us slushbox boys.

-IggDawg
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Old 12-03-2001, 02:51 PM   #5
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If this is true we could use a FWD Dyno!
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Old 12-03-2001, 02:56 PM   #6
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the FWD slot is for those unfortunate to get a flat and have a doughnut for a spare. The doughnut does not have enough traction as the other wheels and you can overload the AWD system.

Peace

BW
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Old 12-03-2001, 02:58 PM   #7
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Its not a good idea to have it out for too long, it says so in the manual.

Korey
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Old 12-03-2001, 03:01 PM   #8
IggDawg
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I wonder if that's because it puts wear on some parts or if its just there to idiot proof their liability policies.

-IggDawg
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Old 12-03-2001, 03:25 PM   #9
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I think it's for keeping their butts safe, and to prevent accelerated wear and tear.

Really serves no function for me save for dynotuning my car.
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Old 12-03-2001, 03:33 PM   #10
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I just want to put a toggle on my dash for S's n G's. That much more control of the car.

An SVX owner said there was a way he could force a 50/50 split in any gear. does anyone know how to do that in an impreza? he said pulling the fuse for solenoid C did it on his car. I'm assuming an SVX tranny is way different, but there's probably a similar mechanism for our cars that would engage the clutch 100%, forcing a 50/50 split. again, just a good thing to know.

-IggDawg
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Old 12-03-2001, 04:03 PM   #11
ashtaron14
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Doesn't hurt to try it out, but it only works 4 an auto...

At one light I was sliding so much everyone started looking at me, so I let go of the throttle, and then shifted to 2nd, which gave me more traction...

I didn't use the 30 fuse, i just used the 20, I figured worst comes to worst the fuse would burn out and I get AWD back

On dry grounds you will feel the power difference, but wet = no traction, for some odd reason it's super easy to spin ur tires... got to the point where it's not even funny... so I put it back to AWD... although I'm thinking of auto-xing next season in FWD... I'm sure I'll get some confused faces when they see me spin my front tires...
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Old 12-03-2001, 04:14 PM   #12
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So I'm guessing it's just a FWD mode.. No option of RWD mode?
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Old 12-03-2001, 04:38 PM   #13
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All Subaru's AWD is based on a Front wheel drive platform, there can be cars that use a rear wheel based 4wd... maybe on of those American trucks or something... don't know

Ja Nei!™
Sunny
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Old 12-03-2001, 04:54 PM   #14
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Quote:
Originally posted by nomorefocus
If this is true we could use a FWD Dyno!
Yep! Some of us already have.
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Old 12-03-2001, 05:00 PM   #15
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I think platform design is irrelevant. From what I understand and read, the auto and the stick use two separate ways of delivering power to the AWD system. That is the reason for the fuse. If I remember my owner's manual correctly, stick trannies do not have this fuse. Auto's deliver a 90-10 or 80-20 front to rear power split under normal driving. Stick trannies are 50-50 split. I think it may have something to do with the electonics in the auto that detect wheel slippage and distibute power. Could be wrong.
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Old 12-03-2001, 05:51 PM   #16
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Quote:
Originally posted by Keith99RS
Auto's deliver a 90-10 or 80-20 front to rear power split under normal driving. Stick trannies are 50-50 split. I think it may have something to do with the electonics in the auto that detect wheel slippage and distibute power. Could be wrong.
I thought it was like 55-65 (front-rear)?
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Old 12-03-2001, 06:47 PM   #17
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Quote:
Originally posted by ashtaron14


I didn't use the 30 fuse, i just used the 20, I figured worst comes to worst the fuse would burn out and I get AWD back

Is 30 the recommended fuse for that socket? If so then you're right. But if the system was rated at lower than 20 amps then you'd pop your AWD circuitry before you'd pop your fuse!
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Old 12-03-2001, 06:52 PM   #18
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Quote:
Originally posted by Asinus


I thought it was like 55-65 (front-rear)?
Hmmm, put in 100% and get out 120%, sounds like a good deal to me. Where can I buy this transmission?

Seriously though, I'm pretty sure the manual is a 50-50 split. The viscous coupling attempts to spin the plates at the same speed, which would be a 50-50 distribution.
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Old 12-03-2001, 07:46 PM   #19
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The 50/50 distribution in an auto only happens when the sensors detect that you car is slipping, normal driving is 90/10, so 100 in the front does not make a big difference, except that it's now possible to make your front tires spin... just make sure u guys try it out on dry grounds before going to the wet... cause that felt really weird..
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Old 12-03-2001, 08:24 PM   #20
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I tried this for kicks on the way home. couldn't get teh tires to spin with moderate effort. didn't feel like going all out on my new snows. Those Arctic Alpins have tons o grip. they just didn't want to let go.

I think I'm going to make a fused toggle switch to engage that at will. I wonder if its safe to engage hot. ashtaron14, you seem to be the project guinea pig. did you try pulling or putting in the fuse while the engine was runnning? it would be cool to have... well I guess it would be "shift on the fly 4WD." hehe. all this work to kick it at old-school. lol... Where's my "Loyale" emblem for the back?

-IggDawg
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Old 12-03-2001, 09:13 PM   #21
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I donno if you could put in or pull out the fuse when ur car is tunning... but i DO NOT recommend u trying it... I think it'll screw the car up...

I just push my throttle to about 75% just to test it out... my RE92s would give in like a second...
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Old 12-04-2001, 12:01 AM   #22
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wow that sounds cool...i know the lady at the dealer said there is a way to disengage awd for the dyno i just dont know how to do it for my car, its stick. i just want to check it out becuase i hear that since its 5050 andi have stick, if i put it in fwd ill rip the doors off cars i normally can barely hang with. i hear u lessen torque and get massive HP gains especially high end.. can i have a reply on this? because id like to try it and actually because able to spin it through 1st and chirp second like i do in my boys gsr/ peace
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Old 12-04-2001, 01:34 AM   #23
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the tires should spin pretty easily in FWD because we have a great deal of lowend torque.....i did this once but spent to much time just spinning out at lights.....the steering also becomes loses and twitchy.....the reason the autos can do this simply with a fuse is becuase the AWD system is electronicly controlled as where manuals its mechanical, hence 50/50 all the time.....1 & 2 selections in the auto are true gears, therefore providing true 50/50 split, 3 and D are ....comprehensive gear selections and folow the 90 10 split.

jdsimpreza: she may be talking about omething like what cobb and SCC did to dyno their RS.....they simply, well, not simply but, replaced the diff with a bald one, therefore the driveshaft would not turn the rear wheels.

Andres
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Old 12-04-2001, 01:35 AM   #24
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What's the big deal, I use FWD all the time. If you guys ever want to see what a FWD Impreza feels like, just come over to my place and drive my car. Yeah my tires spin a lot, especially in the rain. Kinda sucks when you have FWD and 13" stock steelies and crappo tires.
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Old 12-04-2001, 02:32 PM   #25
Jeff 2.5RS
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Quote:
55-65
You mean 45f-55r ? The standard auto on 2.5RS's and the such use the 4eat tranny, which splits torque 90f-10r. However the wrx and vdc outbacks auto's split torque 45f-55r.

Last edited by Jeff 2.5RS; 12-04-2001 at 02:39 PM.
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