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Old 12-10-2005   #1
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Lightbulb Power upgrades for 1.9 JTD

I own a Fiat Punto 1.9 JTD and it has approximately 85 BHP,

Alfa Romeo put the 1.9 JTD engine into the Alfa Romeo GT but the same engine develops approximately 140 BHP, (fiat figures)

I know that Fiat detuned the engine from 115 BHP to 85 BHP.

I understand that if you put the ECU from any other car that has the 1.9 JTD engine with 115 horse power into the Punto you can easily achieve 115 BHP.

I was thinking could you put the ECU from the Alfa Romeo GT into the Punto and get 140 BHP???


By the way my car is a mk2 Punto 3-door 1.9 JTD ELX


any help would be great thx
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Old 12-10-2005   #2
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Re: Power upgrades for 1.9 JTD

speak to these guys: http://www.angeltuning.co.uk/
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Old 12-10-2005   #3
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Re: Power upgrades for 1.9 JTD

thanks for that

realy helpful
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Old 12-10-2005   #4
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Re: Power upgrades for 1.9 JTD

The 140bhp engine (and 150bhp) in the Alfa/ Fiat/ Vauxhall/ Saab range is 16-valve, rather than the 8-valve in the Punto. Fiat only go up to 120bhp with the 8v engine. The two engines are quite different

p.s. your Punto has 80bhp (@ 3000rpm); 85bhp (@ 3500rpm) came with the 2002 facelift when 'ELX' became 'Dynamic' and 'HLX' became 'Eleganza'
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Old 12-10-2005   #5
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Re: Power upgrades for 1.9 JTD

I remember a post on here once about this.

I believe the turbo on the Punto Jtd is smaller than that found on the Stilo and Multipla; and it also wouldn't fit onto the punto as the head is slightly different.

80 bhp soon becomes very slow!! Other things keep cropping up at the moment though.... Cos I really do want that re-map to 115bhp !
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Old 12-10-2005   #6
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Re: Power upgrades for 1.9 JTD

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Old 13-10-2005   #7
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Re: Power upgrades for 1.9 JTD

Quote Originally Posted by gregit
I remember a post on here once about this.

I believe the turbo on the Punto Jtd is smaller than that found on the Stilo and Multipla; and it also wouldn't fit onto the punto as the head is slightly different.
I think the 115/ 120bhp engine has a variable geometry turbo.
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Old 13-10-2005   #8
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Re: Power upgrades for 1.9 JTD

I put a psi powerbox on my 80bhp JTD and it transformed the car into a rocket. Benefits of the box are it's removeable (5mins) therefore doesn't effect warranty. Power can go upto 118HP which is sensabile. Go much higher and you'll be buying new turbos etc. Contect me for a demo of my box which cost 350 new when I bought it. Neil
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Old 13-10-2005   #9
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Re: Power upgrades for 1.9 JTD

Ooph my e-mail is grahn@btinternet.com
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Old 13-10-2005   #10
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Re: Power upgrades for 1.9 JTD

Quote Originally Posted by JTD Monkey
I think the 115/ 120bhp engine has a variable geometry turbo.
whats one of them?
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Old 13-10-2005   #11
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Re: Power upgrades for 1.9 JTD

Something to do with the vanes in the turbo spreading out or closing inwards?? Im sure mine has one of those
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Old 13-10-2005   #12
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Re: Power upgrades for 1.9 JTD

Quote Originally Posted by wolfracepunto
Something to do with the vanes in the turbo spreading out or closing inwards?? Im sure mine has one of those
They do, and it does!

The angle of the vanes change throughout the rev-range. I think it's a bigger turbo that has shallow-angle vanes at low revs, so the back pressure isn't massive and therefore the turbo spins earlier (like a low pressure turbo). The angle changes as the revs increase in order to create more pressure once the turbo is spinning (like a high-pressure turbo). I'm 99% sure the 105/110/115/120bhp JTD has it and I know the 80/85bhp doesn't. I don't think the 100bhp (Doblo, Bravo/a) has it either, just a fixed-vane.

As Wolfrace say's, the 130PD engine in the Fabia vRS has it, as does the 150bhp and 110/ 115bhp version of the same engine. 90 doesn't, but not sure about 100/105
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Old 13-10-2005   #13
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Re: Power upgrades for 1.9 JTD

Quote Originally Posted by JTD Monkey
They do, and it does!

The angle of the vanes change throughout the rev-range. I think it's a bigger turbo that has shallow-angle vanes at low revs, so the back pressure isn't massive and therefore the turbo spins earlier (like a low pressure turbo). The angle changes as the revs increase in order to create more pressure once the turbo is spinning (like a high-pressure turbo). I'm 99% sure the 105/110/115/120bhp JTD has it and I know the 80/85bhp doesn't. I don't think the 100bhp (Doblo, Bravo/a) has it either, just a fixed-vane.

As Wolfrace say's, the 130PD engine in the Fabia vRS has it, as does the 150bhp and 110/ 115bhp version of the same engine. 90 doesn't, but not sure about 100/105
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Old 13-10-2005   #14
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Re: Power upgrades for 1.9 JTD

thats clever, who makes them then?

edit: monkey, a smart owner.. but its standard? sort that out!
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Last edited by arc; 13-10-2005 at 17:15.
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Old 13-10-2005   #15
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Re: Power upgrades for 1.9 JTD

Garrett?
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