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Tuning Fiat 500 1.3 MJT 95HP tuning?

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Tuning Fiat 500 1.3 MJT 95HP tuning?

Benis said:
Thanks for your excellent researching!

The things I'm wondering about is if the gearbox is gonna be a problem. I mean, I just want to get some more power on the highway and the pressure on the gearbox is mostly when acc and changing gear 1->2->3?
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I have a personal interest in knowing the limits on the 6 speed gearbox on the standard 1.4 and had explored my options in relation to 'improving' it. The gear ratios on the MJ are on this...
https://www.fiatforum.com/500/263450-my-new-1-4-500-a-5.html?p=2783864
When I looked for some information on re-mapping it I came across an old thread...
https://www.fiatforum.com/500/139133-re-mapping-1-3-multijet.html
and it was obvious why the tuning guys are not now coming on to FF (recognised oldschool GSR & possibly Nova Angel Tuning) if you notice some of the 'discussions'.
The Abarth guys 'got lucky' with the Alfa 147 gearbox because it can take a lot of abuse - it was a car that I jointly owed with my better half but a cambelt broke prematurely on it.
Building parts to cost means that the tolerances may not be there any more.
If you look at the Panda 100HP the ECU was 'locked' so that you could not tinker with it / re-map it but the 500 ECU could be remapped. The Panda's ECU was locked because they knew that 'they' would tamper.
My thoughts are that Fiat do not expect owners of 500 MJ with 95bhp from a 1248cc diesel to tamper. Size is an issue and having beefed up gearboxs increases size & weight so they artifically reduce what the engine is capable of (e.g. in relation to torque).
I would be mod friendly with I wouldn't tamper with a mito MJ 1.6 but more importantly the OH wouldn't let me !
If you look at some of the owners of the 'new' TA (quite a few of them run or have run 'boosted' cars) and they have declared that they wouldn't 'tamper'.

If you could have an inhibit switch on the lower gears it might be an option IMHO and that is with you driving and not some test pilot.

I hope I have not been a killjoy.
 
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loveshandbags said:
I probably shouldn't have mentioned him but I noticed that you were a key contributor on the thread I referred to you making some key inputs - I was very impressed. (y)
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There was a time tuning was all I was bothered about. Now I spend less time on the Marea and more on the 126 and classic Panda, grubby bits mechanics takes more of my time. I leave the tuning talk to those with more interest now. :)
 
If you ask too much boost, the turbo will be put under a lot of strain, so it is a weak point.
 
Do anyone know a tuning company that makes a mapp when they keep the torque (original) on gear 1 & 2 for example? I've mailed a lot of tuning companies but no answers yet.

Thanks in advance!
 
306maxi said:
If it's for real you'll be wanting a new clutch.....
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Well, I think you're right. Hum, I need to learn more about the gearbox and clutch and how much I can get out of my MJT II without somethings gets broke.
 
Benis said:
Well, I think you're right. Hum, I need to learn more about the gearbox and clutch and how much I can get out of my MJT II without somethings gets broke.
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If you do a search for '514R' which is the modified gearbox for the MJ given the extra torque. It will give you a better insight as to why it cost an extra £1,400 over a 1.2.
Re the tuning box this wouldn't 'step back' the boost in the lower gears but that price is very tempting. TMC were doing a 'special' at one stage on their tuning boxs for the MJ - it's in the traders section.
If your warranty is about to run out and you really wanted the extra power a re-map might seem the best option. Personally I might be tempted with to go with a tuning box but one from a reputable supplier with a proven track history.
 
loveshandbags said:
If you do a search for '514R' which is the modified gearbox for the MJ given the extra torque. It will give you a better insight as to why it cost an extra £1,400 over a 1.2.
Re the tuning box this wouldn't 'step back' the boost in the lower gears but that price is very tempting. TMC were doing a 'special' at one stage on their tuning boxs for the MJ - it's in the traders section.
If your warranty is about to run out and you really wanted the extra power a re-map might seem the best option. Personally I might be tempted with to go with a tuning box but one from a reputable supplier with a proven track history.
Click to expand...
Alright. Thanks!

I'll check TMC out. Any other company you would like to recommend?
 
Benis said:
Alright. Thanks!

I'll check TMC out. Any other company you would like to recommend?
Click to expand...

There's no one that I can recommend since it is a long time since I've had a car where I had an uprated ECU. You could create a thread in Tech talk. Here are some threads of members who had some work done...

https://www.fiatforum.com/bravo/274351-re-map-completed.html?p=2796991
https://www.fiatforum.com/500/273195-1-3-d-multi-jet-remap.html

Clutch slip...
https://www.fiatforum.com/panda/281168-understanding-remaps.html

Timing chain breakage - no update on the outcome...haven't see one before on the FF but I'm only on here a few months...
https://www.fiatforum.com/500/279719-1-3-multijet-injectors-stuck-head-2.html
 
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