Hey guys, do the stock 01' ludes come with a limited slip differential or not ... if they don't does anyone know how much it is to put one on a prelude ? ....

 

The base model 01 Preludes do not come with the ATTS system. Likely the cost to install one in yours would be rather expensive. I read somewhere (likely here) that you would have to have an ECU from an Prelude SH and bunch of other stuff also.

 

hmm i was under the impression that ATTS and LSD's are 2 different things, though the results might be similar...

LSD's are not offered on stock ludes, they were put on some ludes in japan i believe. If you go to the prelude vs. eclipse thread, 4thgen & ludeboom are currently talking about what it takes to get LSD on a lude. (basically H22-->H22a1 trannyswap)

i don't know much about ATTS, cept that it is computer aided torque transfer.

 

do the 01 type SH ludes have lsd?

 

Yes, ATTS is different from a mechanical LSD. ATTS (Active Torque Transfer System) electronically senses wheel spin and transfers power to the wheel with traction. I think that's right anyway, if not, don't crucify me. The LSD on the other hand, sits in place of a stock open differential and mechanically locks/unlocks. If you want an easy way out, see what the price is to buy a JDM H22A transmission w/ a Honda mechanical LSD installed, besides, labor will be cheaper (if you pay to have it done) to swap transmissions instead of take one apart. Yeah, also the wiring I'd imagine would be a pain in the keester.

 

If you're looking to do a LSD the best advice is to go with a Quaife. The unit and install is probably going to run around $1k and really if you're in there no sense in not doing clutch/flywheel/pressure plate too making the bill closer to $1500-1800.

ATTS is an electronic version of LSD intended to work correctly only under the preset conditions of the ATTS ECU. Swapping ATTS into anything would be senesless, it's not robust, it's not easy, and it would probably cost an arm and a leg to do.

 

ATTS uses hydraulic pressure to send torque to the wheel with the least mechanical torque. It would be almost impossible to install ATTS on the base Prelude, since there is different suspension geometry, alignment, and drive shafts. The electronic sensors activate a pump to engage the ATTS. ATTS is not a limited slip diff, posi trac, or traction control. It's a unique design to Honda to use fluid pressure rather than mechanical discs or electronic engine speed control. I tested an SH when I bought my car, and honestly could not feel a difference worth the $3,000 sticker difference.

 

I think that's part of the "magic" of ATTS it's seemless when workinig correctly. I know for a fact after driving my car to the limit a million times and then some when it's working and it works, TRUST ME! You can rotate my car like a RWD and as long as you keep your foot in the throttle it'll pull through the ass stepping out.

The $3k difference was in sticker and it did include some other things besides jsut the ATTS system so it's a little unfair to put it that way.

 

Well, o.k. Spoiler, different rims, leather shift knob, and body color lower molding. I guess that could justify a little, but I got my car equiped with the oem spoiler, fogs, floor mats, and red stitched shift knob for 23k out the door. That's still 3k less than the SH sticker. Also, no one was willing to haggle on price for the SH if they had any, and certianly if they didn't. Took me six months to get my car in my color and price the way it is.

 

I'm sure eventually after comparing the two through driving you'd definitely notice the difference. While it's no mechanical LSD, you'd definitely be able to tell during wet/snowy conditions, and tight cornering, especially accelerating through.