TPS and MAP figures

General Topics for configuring, operating and tuning the Megajolt. Also see the <a href="http://www.autosportlabs.net/MJLJ_V4_Operation_Guide">Operation Guide</a>

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capri_turbo
Posts: 122
Joined: Tue Jan 10, 2006 8:17 pm
Location: North Yorkshire, UK

TPS and MAP figures

Post by capri_turbo »

If a map has been created with figures for a TPS in the map bins, is it safe to use it on a system running with a map sensor. I take it the figres entered in the map bins for a map sensor are in kPa, so this leads me to beleive that maps written around a TPS will not be suitable. can anyone confirm this?

I have been told to try a TPS map and see how it goes, but I am NOT willing to do this without confirmation that the maps are interchangeable. All the maps I have available have TPS figures in the map bins...

Oliver Sedlacek
Posts: 68
Joined: Mon Sep 13, 2004 8:45 am
Location: The Chalfonts
Contact:

Yes and No

Post by Oliver Sedlacek »

Unless you have a map for an identical engine, you are going to have to start with a "nearest guess" map anyway. The WOT (Wide Open Throttle) figures should be identical for MAP and TPS maps, so I would be happy to go with it as a starting point. WOT is when timing matters most, so non-optimal part throttle timing probably wont do any harm.

capri_turbo
Posts: 122
Joined: Tue Jan 10, 2006 8:17 pm
Location: North Yorkshire, UK

I have a few Maps

Post by capri_turbo »

the engine is a Ford Pinto 2 litre. I have various maps which all have figures ranging from 0 to 152 etc. in the map bins. I take it that WOT on a TPS is 0 and 152 would be fully closed throttle? Looking at the advance figures, I'm not so sure.

Can I simply change the TPS numbers... i.e. 0 to 152 to kPa figures, e.g. 100 for fully closed throttle ranging down to whatever I measure as the highest vacuum... say 30kPa for example?

I don't understand the TPS figures at the moment.

The map I was going to start with is this:

#Ignition Configuration for MegaJoltLite Jr.
#Fri Jan 14 16:31:38 GMT 2005
userOutType1=1
revLimit=20
userOutType0=1
rpmBins=5,12,15,20,25,30,35,40,45,50
advance9=14,17,15,24,24,25,27,28,29,29
advance8=14,17,15,24,25,25,27,28,30,30
advance7=14,17,16,24,25,25,27,28,30,30
advance6=14,18,20,24,26,26,28,28,33,33
advance5=14,19,21,24,27,27,28,29,35,35
advance4=14,20,24,25,27,27,29,29,37,37
advance3=14,21,25,26,28,28,30,30,38,38
<b>mapBins=0,36,51,65,80,94,108,123,137,152</b>
advance2=14,22,28,28,28,29,34,34,38,39
advance1=14,23,29,32,30,34,38,39,42,43
advance0=14,10,16,22,24,28,31,34,36,37
cylinders=4
userOutMode3=0
userOutMode2=0
userOutMode1=0
userOutMode0=0
shiftLight=18
userOutValue3=14
userOutValue2=13
userOutValue1=12
userOutType3=1
userOutValue0=10
userOutType2=1

The map bins in bold are the figures that don't make much sense to me. What I want to do here is change these to appropriate kPa readings. Can you help?

Thanks in advance (pun intended).

Kenn
Posts: 0
Joined: Thu Jan 05, 2006 4:32 pm

no help but

Post by Kenn »

have you change/swaped complete MJLJ units or converted you original one from TPS to MAP?

if you have swaped units have you got the TPS unit for sale?

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