Cdi unit.

[scooterbooter]

Got me scoot running great but the revs are still limited by the cdi. Yes it is annoying when I hit the imposed red line and all I want is an engine that runs right ( I love an engine that runs to its best). But does this limiter maybe protect me Scootex more by being there or do the benefits out weigh? Any views welcome. Me last vespa could nearly hit 9000revs. Got a feeling 'el diabolo' ain't quite up to that!!!

[sime66]

PX125, SIP2, drilled filter?
Don’t think it’s your CDI that’s limiting it; you’ll be needing to do a fair bit of engine work and a different top end with your port timings sorted to get near 9,000rpm – mine just does that after lots of work, but it wasn’t supposed to.

[scooterbooter]

Oh definitely! Im not trying to achieve those figures.me last one had loads done to it .I'm trying to keep this one fairly standard. But I can hear that engine could go a bit more I thought that might be the cdi. I only want to get the engine I got running at its sweetest. I'm happy with the performance I'm getting. Least I'm not wasting me hard earned on a new cdi?

[scooterbooter]

I tried to do a smiley face at the end but it gave me question marks.?

[scooterbooter]

And again!!!

[sime66]

I'll do one for you!



I think I'm right in saying the old traditional Ducatti type CDI like I'm sure yours has (before the new CDI and stator arrangement, which are limited) will not be limiting your revs.
It's back in my big thread and I'll check later, but I'm sure pxguru said 10,000 - I will check later when I've got clean hands.
It might be that your CDI or stator are not at their best anymore; if you checked the test figures (in several places here, and I'll find them later if someone doesn't beat me to it), if those figures are OK on yours, I'd think it wasn't limiting you.

Bit vague that, but I've got an engine on me desk at the moment..................

[scooterbooter]

Thanks for the smile!! El diabolo is only six months old. She's only a baby yet! I made a typo cus I'm useless. So I think she has got all that new junk!!

[sime66]

Ahh, you don't want all that nonsense.
You're under warranty I imagine?
You did the exhaust though, so maybe that doesn't matter to you.
A quick look at the wires going into your CDI will confirm that it's new type.
I'll be honest, I don't know much about those new electrics; it is limiting but don't know at what point.
It ain't to protect your scoot, its Euro emissions nonsense.
What you really need then is someone who knows what they're doing to give some proper advice on new scoots and what you can do.
Chaps.....?

[scooterbooter]

Thanks sime. Yeah I don't give two hoots about my warranty. I wanted the shop to do it but they are always busy . I'd ironed out all the teething problems. And started tinkering at 2500 miles. Life's too short!!! Any advice welcome on possible new cdi or what it needs. cheers guys
.

[sime66]

Right then, here we go......

You'll realise, I don't know, so I'm just going to point you in the right direction so you can do some research.
My earlier replies were because your intro said 56 plate (07), when it sounds like you meant 65 plate (15)
I've heard talk of changing to a zeuss CDI, but don't know what, if anything, you have to do with stator or flywheel. Here's a link, I'd have a talk to Reedspeed and ask them what they recommend:

www.readspeedscooters.com/products/READSPEEDZEUSCDI-readspeed----zeus----vespa-px125-150-cdi.html

I also found a Modern Vespa thread on the subject, but it's a minefield of (mis?)-information, where you'll have to read it, follow links, and decide for yourself.
Sounds to me like first step is exhaust like you've done, then carb and CDI, but have a read here and see if any of it's useful:

modernvespa.com/forum/topic142840

Also, there's plenty of rich kids on here with new scoots, who must have tackled some of this, maybe they can chip in, or maybe you can search through previous threads on here.
That's about as much as I've got; hope it gets you started - hope some other chip in too.

[scooterbooter]

Good man sime. I appreciate that . I take it modern vespa ain't got a good rep!!! Thank you. !

[sime66]

Not at all; Modern Vespa (or Not so Modern Vespa for the older Vespas) can be an excellent source of info.
My disclaimer before was because I don't know who's posting on that thread, or have a lot of knowledge to judge its worth, so you'll have to assess it as you go.
When you decide what to do, I'd be interested to know what you find out; do update when you find anything useful.
It's often quiet here on the weekend, so you might get some more useful posts on this thread next week too.

[henri]

some on modern vespa are goldmines of info , an some are wastes of oxygen , an youve got to remember its all yank-talk , so measurements n specs need converting to uk stuff .
if pipe n carb are done your only limiter now is cdi , its rev limited to around 7000 .i say around as ive seen figures from 6500 to 7500 ,nobodys sure . 2 options ,1 a reedspeed zeus cdi ,fit n forget but 75-85 quid a pop .2 swap flywheel n stator an cdi for ducatti items an be old-skool stock spec .can be had 2nd hand cheaper than a zeuss cdi ,an are cheaper to fix/replace down the line . plus if going further later kyrptronic mappable cdi's will work on them . H

[djloone]

The zeus cdi,s fella,s (and ladies)..are there any roadtests/reviews..before and after comparisons..dyno graphs etc that any of you have come accross...the promo vid thing on the sip site looked intresting

LOON-E

[sime66]

Not needed on our scoots with Ducatti stator and CDI, Loon; they’re for getting rid of the restricted CDIs on modern PXs.

"The new Readspeed "Zeus" CDI has been designed for this late ignition system and removes the Rev Limiter allowing you to further tune the vehicle from standard format to higher performance."

As H is saying though, it might be better to change from modern CDI, stator and flywheel to Ducati CDI, stator and flywheel anyway; more upgradeable later, and also easier to carry a cheap conventional CDI than a spare Zeus. I think a lot of people have got the impression that a Zues is an upgrade to a Ducatti, but I don’t think it is; Ducatti type CDIs are not rev limited - not that we'd notice anyway.

[scooterbooter]

Ah that's food for thought. I've seen there is a lml one . Though I'm really not sure about that. Out of the options you guys have said the ducati sounds the best ...

[hully1]

hi H, where can you get information/purchase one of the kyrptronic mappable cdi's that sounds like what I require for my next project! cheers

[henri]

good question hully , i havent a effing clue , but a ring round the scooter shops ,concentrating on the ones with speed in the name .should get you info , memorys saying reedspeed's ya best bet . H

[hully1]

Cheers H will have a look into it.

[sime66]

www.kytronik.com/

Spark Magnifier:
www.kytronik.com/sm2013

Smart Booster:
www.kytronik.com/sb2

Programmable Variable (USB)
www.kytronik.com/vcdi

Facebook:
www.facebook.com/kytronik

We discussed them briefly somewhere on this forum, but I can’t find it quickly.

And don’t forget Kheper:

kheper-scooter.com/

kheper-scooter.com/2016/04/getting-started/

kheper-scooter.com/2015/11/compatibility-list/

kheper-scooter.com/2015/11/how-to-use-a-custom-setting/

kheper-scooter.com/2015/11/how-to-select-your-preset/

Facebook:
www.facebook.com/kheper.scooter?fref=ts
(see the Android App video)

Having looked them up again because Hully asked; I’m mainly putting them here so I can find them again.

[djloone]

This the type of thing your after booter?

www.ebay.co.uk/itm/VESPA-PX125-150-2011-ON-UNRESTRICTED-PROGRAMMABLE-CDI-UNIT-NOT-LAMBRETTA-/331534044276?_trksid=p2141725.m3641.l6368

LOON-E

[sime66]

At first glance I'd thought you were off the mark, Loon-e, but that does look interesting, and new (to me anyway).
It makes some pretty big claims too just reading quickly; might be worth a read-round for reviews later...............

[henri]

have heard of mtech before ,doing ign kits for lamms ,good stuff .an chiselspeed have a fair rep too . looks like there just copying reedspeed an makin a plug n play solution for the limited cdi . H

[scooterbooter]

Ah good one. Yeah that looks just the ticket seems an easy solution But it's pretty expensive. That's right I'm well tight!!! A plug in an play seems the best option. Would this be superior to the lml ??

[hully1]

Cheers Sime new I could rely on you to find something!