Can someone tell me if it is preferable to use Megajolt with a throttle position sensor or a Manifold air pressure sensor? I was thinking of buying the bolt on TPS for the Weber 45 I am planning on using but depends on pros and cons.
Tps Or Map Sensor On Megajolt
Started by
Bradley Gaunt
, Nov 10 2011 02:55 PM
9 replies to this topic
#1
Bradley Gaunt
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Posted 10 November 2011 - 02:55 PM
#2
mini93
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Posted 10 November 2011 - 03:00 PM
MAP is more preferable on force induction engines as you can tell the volume of air entering
TPS more preferable on engine with long cam durations as the valve pulses can mess up the signal
TPS more preferable on engine with long cam durations as the valve pulses can mess up the signal
#3
The Matt
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Posted 10 November 2011 - 03:01 PM
I went for MAP on my 45, seemed to work OK.
#4
mini93
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He's just too casual!
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Posted 10 November 2011 - 03:19 PM
i still went for MAP aswell i might add 286 cam... works well enough
#5
twrminisport
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Jesus
Posted 10 November 2011 - 03:28 PM
Map for a mini really...
#6
The Matt
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Posted 10 November 2011 - 04:37 PM
Yeah, I was on a 286, used two pipes into a little reservoir, then a single pipe out of that to the sensor, BUT, I tried it without a reservoir and just fitted a T-piece and it made little to no difference to be honest.
I would say that most roady/fast roady and lower cam specced Minis will be fine on MAP really. TPS is only really required for wild cams.
I would say that most roady/fast roady and lower cam specced Minis will be fine on MAP really. TPS is only really required for wild cams.
#7
Bradley Gaunt
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Posted 10 November 2011 - 05:30 PM
running 296 cam on 1380 with freeflowing head, its semi race engine i suppose... i'm happy to go with MAP if there is little difference as it saves me the 77 quid for the weber TPS sensor!
#8
twrminisport
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Jesus
Posted 10 November 2011 - 11:30 PM
Me and the Matt and mini93 have a friend running a 296 scatter with a weber etc producing about 120bhp and he's on map...
Edited by twrminisport, 10 November 2011 - 11:30 PM.
#9
Wil_h
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Up Into Fourth
Posted 11 November 2011 - 09:31 AM
Always go for MAP first. This means you can adjust the ignition relative to engine load (vacuum) rather than just the throttle position. The throttle position is indicative of engine load, but not as good a vacuum.
#10
mini_mentalist_chris
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Posted 09 October 2016 - 11:07 AM
running 296 cam on 1380 with freeflowing head, its semi race engine i suppose... i'm happy to go with MAP if there is little difference as it saves me the 77 quid for the weber TPS sensor!
Sorry for resurrecting this thread.
Bradley,
I'm also running a 1380 with a 296 cam, and will be using a weber 45 on my new build. I fancy building a megajolt system and I was wondering if you had any success with MAP? Or did you go for TPS in the end?
Edited by mini_mentalist_chris, 09 October 2016 - 11:08 AM.
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