oliwb
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| posted on 19/9/06 at 02:55 PM |
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Megajolt Maps
I'm wondering if tinkering with my basic map in the megajolt would help my car have a bit more grunt (especially when overtaking)....I find that
its plenty fast enough when I get on an open road and am not being harrassed by drivers/motorcyclists either from in front or behind....but it
doesn't seem very quick at all to overtake. No doubt some of this is driver related (yes I am changing down and revving the nuts off it!)....It
could just be because its a 1.6 pinto and not a 2L. Not really sure where to begin when it comes to making up maps! Would connecting my TPS help out
aswell as currently its not attached (don't ask!). I'm running bike carbs so maybe there is something to be fiddled with in them aswell
as they seem to smell very rich (but seem to be tuned properly, ie no flat spots etc) and they do seem to be guzzling the petrol (good or bad I
dunno!)....Any advice muchos appreciated....Cheers Oli.
If your not living life on the edge you're taking up too much room!
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David Jenkins
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| posted on 19/9/06 at 03:23 PM |
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I look upon MegaJolt as a method of getting the best out of your engine, rather than as a means of getting more power. In other words, to get the
engine running as well as it is capable.
As for petrol consumption - in my case it's usually caused by a heavy right foot! But getting the mixture right does sound like a good
idea...
David
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oliwb
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| posted on 19/9/06 at 03:28 PM |
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LOL....yeah I think thats prob it rather than the setup. I'd agree on the no more power phrase...I just don't think I'm getting the
best at the moment! Don't want to pay for a rolling road as I'm putting a zetec in next spring would just like to get it setup better for
the odd sunny blast through the winter....cheers for any help people can be.....Oli.
If your not living life on the edge you're taking up too much room!
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boxfile
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| posted on 19/9/06 at 03:33 PM |
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If you don't have the TPS connected the megajolt is just using 2D ingnition map which is little better than a dissy. The major improvement comes
from using the TPS which gives you a 3D map. The system is then accounting for the load on the engine which is what makes the differance to
drivability and response at part throttle openings
I am not a number!
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David Jenkins
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| posted on 19/9/06 at 03:35 PM |
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I missed the bit about the lack of TPS! Must pay more attention...
Yes, that could make it run much better, as 'boxfile' suggests.
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Schrodinger
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| posted on 19/9/06 at 03:35 PM |
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What sensors is the Mega Jolt using? If you are not connecting the TPS I would suggest that is the first place to start as it doesn't know that
the throttle is wide open when you floor it unless you have something else in it's place like MAP.
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martyn_16v
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| posted on 19/9/06 at 04:32 PM |
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You most certainly can get more power out of the engine by adjusting the ignition timing, assuming it's not already close to it's best
settings. I found on my Megasquirt setup that once the fuelling was within shouting distance of being in the ballpark, that changes to the ignition
table had far more effect than similar changes to fuelling. The problem is that doing it without a rolling road is challenging, much harder than
tuning the fuelling.
And i'll add to what everyone else is saying, get the TPS sorted, it'll make an absolute world of difference to part throttle performance
and so make the engine feel a lot more 'torquey' 
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oliwb
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| posted on 19/9/06 at 04:54 PM |
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Sounds like I'll be doing that tomorow then! When its in its 2D setup (ie. now) its running like the worlds best setup dizzy, so its not bad
though I agree it could probably be a lot better. The problem is that the TPS doesn't fit on my bike carbs so I need to come up with a solution
other than the bracket I was using before which didn't really work properly! I'll have a fiddle tomorow and see if I can get something
sorted once and for all....cheers...Oli.
If your not living life on the edge you're taking up too much room!
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paulf
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| posted on 19/9/06 at 07:43 PM |
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Oli
As others have said you need to use the TPS . It will enable you to run higher advance at part load settings and give a smoother power curve.Have a
look at some other maps either on the megajolt site or there are some on the installation Cd.You will get an idea of what is required , just limit the
maximum throttle advance to what is a safe figure for your engine maybe about 32 degrees maximum at full load just listen for pinking .
Some people have managed to fit a TPS to the throttle pedal which is far from ideal but may be an easier option if you are having problems with the
carbs.
Paul
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