Anyone have experience with Ultra MDI system? I heard some people said it is a valued mods. Any opinions?

 

A&J Racing had one for sale a while ago. Maybe phone and ask them.

 

Steve Sakai has/had it on his car... apparently he likes it quite a bit.

 

Anyone have a link to this MDI system?

 

search its been covered, nvious r n myself were lookn to getting one.

 

Any opinion??

 

I researched about ultra MDI. No ans.

Any opinions?

 

I remember Ben @ AJR said it was worth getting...I actually had one but traded it before I had a chance to use it :doh:





*** BTW, the Type-R specific MDI unit is the 9680 ***

 

aww kengs u should have sold it to me

 

Can anyone explain what it does and why we should get one?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Alexander &raquo;</TD></TR><TR><TD CLASS="quote">Can anyone explain what it does and why we should get one? </TD></TR></TABLE>

Digital ignition aka distributor-less ignition. Uses coil packs and the ignition box/amplifier (in the diagram with the heat syncs) to provide spark for the plugs.

Supras, DSM's, and a slough of other engines come with this setup from the factory. I believe the MDI system uses CBR F4i coil packs, as they have the highest spark capacity and quickest recycle rate of any coil packs that I know of. Many Supra owners switch the F4i coil packs because they are half the cost of the Toyota units.

The benefit is there are no distributor bearings/caps/rotors to wear, it runs off of electronic crank signals. I don't know how you change your base timing though, I would figure its easier on a distributor where you can just rotate to find a good base timing. I'm sure the MDI system has some sort of programmability, either laptop or built-in.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 92TypeR &raquo;</TD></TR><TR><TD CLASS="quote">Digital ignition aka distributor-less ignition. Uses coil packs and the ignition box/amplifier (in the diagram with the heat syncs) to provide spark for the plugs.</TD></TR></TABLE>

I don't think its a "distributorless" ignition, but more of a high discharge dual coil pack.
Notice that there are no individual coil packs associated with "each" of the plug wires.
That said, Steve felt it was worthwhile and might have been good for almost an additional 5 whp.
Additionally, it was supposed to be pretty much plug-n-play.

 

interesting after seeing Lances rotor shred itself to death and limiting his track time severly at the Glen last month.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 1GreyTeg &raquo;</TD></TR><TR><TD CLASS="quote">interesting after seeing Lances rotor shred itself to death and limiting his track time severly at the Glen last month.</TD></TR></TABLE>

yeah, im not all to keen on the whole rotor screw setup honda did on their distributors...atleast give us a better locking mechanism

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 255.255.255.255 &raquo;</TD></TR><TR><TD CLASS="quote">atleast give us a better locking mechanism </TD></TR></TABLE>

 

honda lock? that looks like a photochop

 

No sir!

 

How can i get more power with using MDI system?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Edward &raquo;</TD></TR><TR><TD CLASS="quote">How can i get more power with using MDI system? </TD></TR></TABLE>

Spark accuracy.

 

LIST price in Japan (for the 9680 MDI) is around USD780, but they are discounted by most shops over there.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by neo_ &raquo;</TD></TR><TR><TD CLASS="quote">Whats the price on one of these? And who sells them?</TD></TR></TABLE>

Intec racing has one in stock, and one on the way I believe.

http://www.intecracing.com/

 

If i want to use hondata s100 combine with MDI system. Is it worth to use MDI?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Edward &raquo;</TD></TR><TR><TD CLASS="quote">If i want to use hondata s100 combine with MDI system. Is it worth to use MDI?</TD></TR></TABLE>

Any added engine management will further increase the accuracy of the ignition system by providing you with extra tunability with your ignition tables.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 92TypeR &raquo;</TD></TR><TR><TD CLASS="quote">

Any added engine management will further increase the accuracy of the ignition system by providing you with extra tunability with your ignition tables.</TD></TR></TABLE>

do you mean, if i use hondata s100, i dont need to use MDI system?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Edward &raquo;</TD></TR><TR><TD CLASS="quote">

do you mean, if i use hondata s100, i dont need to use MDI system?</TD></TR></TABLE>

The MDI is a completely separate system that replacese the mechanical ignition system (distributor) with a digital unit (MDI).

Having control over the ignition tables (ie: Hondata/Crome...etc) gives you further potential to improve your power.