NC30/35 Power Loss with Ignitech Ignition - The Solution

[RickOliver]

The problem -

Dyno tests of NC30/35s fitted with Ignitech TCIP4 Ignition systems were showing high rpm power losses of up to 5bhp when compared to runs made using the stock Honda ignition - Honda vs Ignitech chart below.



I consulted Ignitech`s technical guys who suggested that the problem might be associated with the dwell time settings.

Fellow 400gb member and professional auto electrical diagnostician Keith Brown kindly shared the data he had collected while trying to solve an unconnected ignition problem of his own and this showed that at 9000rpm the stock ignition unit has a dwell time of around 1.9 milliseconds - the Ignitech units were coming from the factory with a setting of 5.0ms, so in simple terms the ignition coils were spending too much of their total working cycle charging and not enough time firing.

I reprogrammed a TCIP4 unit with a dwell time of 2.0ms and sent if over to Kev at Projex who had offered to do a back to back dyno test with the stock ignition system on his own NC35 - results on the dyno chart below, so I think we can safely say that we`ve fixed the problem...



How to fix -

If you want to reset your own TCIP4 V80 unit, plug it in to your PC, turn on the bike`s ignition, open up the programming software and go to this page -



Click the `read` tab at the top of the page so you are looking at the programming which is actually installed in your unit, then check `manual` in the `Dwell` box and change the setting in the circled box from 5000 to 2000.
Back at the top of the page, click the `program` box, then `verify`, then `read` - make sure that the `dwell time` box still shows a setting of 2000 and if so switch off, disconnect and the job`s done...

Many thanks to Keith and Kevin for their invaluable assistance - for anyone who doesn`t want to tackle this themselves just drop me a mail and I`ll send you a ready modified map to drop in or we can arrange for you to post your unit to me and I`ll do it for you.

Rick

[ibby4585]

Well done.

So do the new units come with the adjustments already done?

[RickOliver]

If you buy them from me they will have the revised setup from now on - I don`t know what Ignitech will be doing but I have passed this information on to them...

[porndoguk]

Top bombing, Rick can you send me some maps for the v80 please,

Thanks Rick

[dengus]

Can i have the nc35 v80 mapa too??
Thanks

[banoffee]

Rick - have sent you an email as I don't get the dwell options at all. Wondering if this means I have the 75 version...

[james....]

Is there a dyno plot of the improved ignitech unit vs the standard or "hrc" version? Would be good to see the real difference.

[RickOliver]

Steve - I`ve replied to your mail

If there are no dwell adjustment tabs on the `Miscellaneous` page of the software, just a tick box labelled `Excitation Long` then you have the V75 unit which has a shorter dwell time preset and doesn`t require this particular adjustment.

Anyone wanting the modified maps sent, please email me direct - ricknc30(at)gmail.com

James - The dyno runs are Ignitech V80 with Standard map vs OE stock ignition unit for the sake of a valid direct comparison...

Rick

[doodleface]

Rick I might get one of these from you pre mapped for the HRC kit (or this map whatever is best). My bike has some unknown (possibly Chinese copy) ignition box. Email me a price and I'll organise it. Thanks bro.

[banoffee]

Excellent, thanks for the confirmation!