This ever happened to you?

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fatboy · #1 Post by **fatboy** » Sun May 17, 2015 5:53 pm

Out for a ride today on the slightly pimped up falc, suddenly cut out/ kicked back in again, ran fine for a few miles and cut out, EFI on the display.
Turned the ignition off, then on.. all good and of we go agian.
A mile later same thing but the EFI remains on display.
Cant see any obvious wires adrift.. a little voice inside my head tells me 'look at the eprom', odd as for some reason I decided to put a small electrical srewdriver under the seathump.
Im taking the ecu out and two guys on jap 4's stopp to check Im ok.
One guy walks over and asks'Electrics ?'
I get the cover off the ecu and discover the eprom trying to escape from its mother...
Push back into place,, few jokes about Italian bikes on off we go again, faultessly this time.
Thanks for stopping lads, appreciated

#2 Post by **mangocrazy** » Sun May 17, 2015 5:56 pm

I guess that's why the factory Eprom's have that weird soft epoxy-looking stuff plastered all over them - stops the Eprom vibrating out. I guess the same effect could be had with judiciously applied silicone sealant...?

ReggieGasket · #3 Post by **ReggieGasket** » Mon May 18, 2015 4:59 pm

Bikers sure are decent chaps

fatboy · #4 Post by **fatboy** » Mon May 18, 2015 6:28 pm

I did think that the adhesive was there for a reason, the quantity of which....OTT.
I did wonder what to replace it with, I'd have some serious concerns about silicone sealant as in it does not break away/peel off cleanly, the various other additives such as quick cure, mould resistance, extra adhesion may not be the best for sensitive comonents.
Even pure silcone has that slightly greasy feel to it when cured.
i had a girlfriend that made sculptures out of pure silicone, ....
Im sure Iv'e left this open to derail here

#5 Post by **mangocrazy** » Mon May 18, 2015 7:32 pm

Did she make them in pairs? Sorry...

Take your point about the additives in most silicone sealants. But as you're only putting the stuff on top of an Eprom and circuit board, if you put the sealant on each end of the Eprom (avoiding the 'legs'), I'd have thought you'd be OK with pure silicone.

The other way would involve drilling the PCB either side of the Eprom and wrapping a tie wrap around it and the PCB, but that's a whole different level of scariness...

Dalemac · #6 Post by **Dalemac** » Tue May 19, 2015 8:15 am

It's funny you mention this. Every now and then the engine will just cut out on mine. Clutch in and out again and it fires up. Rolling bump start at 70 is a very strange experience.

I know it has an SL chip in it but i have never opened up the box to see if it is installed correctly.

Probably time to get a forza chip, install it and make sure it is secure.

MartDude · #7 Post by **MartDude** » Tue May 19, 2015 5:17 pm

fatboy wrote: i had a girlfriend that made sculptures out of pure silicone, ....
Im sure Iv'e left this open to derail here

Since you suggested it . . .

Did she study with Cynthia PlasterCaster?

http://www.cynthiaplastercaster.com/

fatboy · #8 Post by **fatboy** » Tue May 19, 2015 7:23 pm

Hi Dale, as the SL Carbon chip requires a daughter board to fit the mother board it fair to assume the work was done properly, but no guarantee.
I did get the EFI flashing up on the dash ( when my Forza tried to escape )
I also had the SL chip, I also found it was prone to sudden cutting out, starting again with no problems, this usually happened to me at lower speeds, that said the SL chip is a right thug, comes out punching from the start and it punches bloody hard and fast, not as refined as a Forza or Gabro item but a proper kick ass experience !
Brutal, bloody brutal

Falcopops · #9 Post by **Falcopops** » Tue May 19, 2015 10:07 pm

I've used silicone to stick chips down in the past with no ill effects

Dalemac · #10 Post by **Dalemac** » Wed May 20, 2015 8:27 am

The problem I have with the SL chip is that it is a right pig at anything under 3.5k. Now this is perfectly fine when out on the open road where the revs are kept higher that, but through town (i commute every day) its not the best. I've already gone -1 on the front sprocket.

Not sure i would describe the acceleration as brutal (if i pin the throttle it the front will not lift, ever, in any gear), but then again, I don't have anything to compare it to, not even the stock chip.

Firestarter · #11 Post by **Firestarter** » Wed May 20, 2015 8:56 am

Had a quick look at mine last night (part of an ongoing misfire fault finding mission). I fitted a Gabro 12 months ago. The chip did not seem completely seated, although was not loose/not about to fall out. I have had an intermittent EFI message recently which I'd put down to the usual air intake sensor, maybe related to the chip, maybe not (will find out when I take it out next, new tyres last night plus wet roads = chickened out for the car this morning).

D-Rider · #12 Post by **D-Rider** » Wed May 20, 2015 9:12 am

Dalemac wrote:The problem I have with the SL chip is that it is a right pig at anything under 3.5k. Now this is perfectly fine when out on the open road where the revs are kept higher that, but through town (i commute every day) its not the best. I've already gone -1 on the front sprocket.

Not sure i would describe the acceleration as brutal (if i pin the throttle it the front will not lift, ever, in any gear), but then again, I don't have anything to compare it to, not even the stock chip.

Get yourself a Gabro chip - it transforms this low-revs commuting range.

flatlander · #13 Post by **flatlander** » Wed May 20, 2015 9:40 am

Mess about with your gearing that's loads of fun and if you really want a thrill buy Pirelli tyres and commute in that fine greasy rain brown trousers today at work methinks!

spiderwheels · #14 Post by **spiderwheels** » Wed May 20, 2015 10:02 am

flatlander wrote:Mess about with your gearing that's loads of fun and if you really want a thrill buy Pirelli tyres and commute in that fine greasy rain brown trousers today at work methinks!

Can't say I've had any trouble with my Pirellis in the rain, even on Monday morning when, with 30 miles still to go, it started raining after a few dry and warm days - that always makes the roads nice a greasy

This thread reminds me to go and check my chip - it could be anything under there...

Dalemac · #15 Post by **Dalemac** » Wed May 20, 2015 10:19 am

Greasy road? When I put the new front tyre on earlier this year the next day it was sheet ice on our road, didn't stop me from taking the bike to work( all the main roads are usually fine)!

All you need to do is be gentle on the throttle, brakes and steering and its all good.