JTD. Unijet or MultiJet? (Nige?)

[Buzz]

looking at buying a new or very nearly new alfa (on finance, clearly!) and have noticed that the 1.9 JTD that i was gonna get is now being made as a 16v multijet diesel, instead of unijet (with even higher pressure on the fuel line)

Apart from it having been tuned to give more power 150bhp out of the box instead of 115, why has this been done?
The emissions look lower, but fuel consumption is a bit higher, so i dont think it's been government interference, because although they give less sulphur and stuff, they give more CO2 off instead, which is contradictory to the kyoto agreement. Also, it means using more fossil fuels, which are in short supply.

If anyone can enlighten me (Nige perhaps?), please do. at the moment, i'm looking at at least a 6 month old car if i buy a unijet. which will be cheaper to insure i imagine

Buzz
the poster formerly known as LightWarrior

 

[AlfaNige]

Firstly if you are buying a 6 month old car it wil be a 140bhp.
Right, the 16v is a multijet, the 8v is a unijet. The 16v is a much better engine, on par with the VW TDi unit. If you can afford it go for the Multijet
We are currently the only company in the UK that can remap the Multijet without invalidating the warranty. We are taking them to 180bhp although we have seen them at 195 but the smoke at that point. We even had Sandy take his Alfa GT 1.9 around Castle Coombe last Saturday and although his smoke a bit on the track (but not on the road) he was not embarrased by the Coupe's he was up against.
Here are some stats from an Alfa 156 1.9 16v SportWagon I did yesterday






RUN 1 (PRE TUNING)









mph
s
g
ft



10
1.09
0.46
6



20
2.13
0.41
30



30
3.70
0.27
87



40
5.48
0.08
182



50
7.30
0.21
302



60
9.45
0.16
477









RUN 2 (POST TUNING)









mph
s
g
ft



10
1.04
0.48
6



20
1.93
0.47
26



30
3.07
0.39
68



40
4.47
0.21
141



50
6.08
0.24
248



60
7.97
0.19
401










RUN 1 (PRE TUNING)




S
G-Force
ft



30-40

1.78
0.08
95



40-50

1.82
0.21
121



Combined
3.60
0.21
215










RUN 2 (POST TUNING)




S
G-Force
ft



30-40

1.40
0.21
74



40-50

1.61
0.16
107



Combined
3.01
0.16
181










RUN 3 (PRE TUNING)




S
G-Force
ft



50 - 60

2.15
0.16
175



60 - 70

3.3
0.13
315



Combined
5.45
0.11
490










RUN 4 (POST TUNING)




S
G-Force
ft



50 - 60

2.51
0.19
152



60 - 70

2.17
0.14
266



Combined
4.68
0.14
419


Now bearing in mind thats a big car, the stats are very impressive in my opinion, especialy as it was me driving and I was not used to the clutch!
The cost of the Multijet remaps though is £450 because of the equipment costs (we have had to make huge investment yet again!).
Nige

 

[AlfaNige]

Oh there is one more thing though......
I also did a Seat Ibiza 1.9TDi yesterday...






RUN 1 (PRE TUNING)









mph
s
g
ft



10
1.00
0.53
6



20
1.94
0.52
26



30
3.28
0.39
77



40
4.58
0.35
144



50
6.47
0.25
269



60
8.45
0.21
429









RUN 2 (PRE TUNING)









mph
s
g
ft



10
1.01
0.43
8



20
1.94
0.50
33



30
3.34
0.42
83



40
4.54
0.31
160



50
6.38
0.21
308



60
8.31
0.17
496









RUN 3 (POST TUNING)









mph
s
g
ft



10
0.94
0.52
6



20
1.87
0.54
25



30
3.00
0.37
69



40
4.06
0.40
123



50
5.59
0.26
224



60
7.20
0.27
355









RUN 4 (POST TUNING)









mph
s
g
ft



10
1.02
0.50
7



20
2.03
0.50
28



30
3.07
0.44
67



40
4.12
0.40
121



50
5.64
0.28
223



60
7.25
0.27
353
Again, this is a 1.9 DIESEL (YES TOM... A DIESEL lol!!!) 50+mpg, low insurance group..... daga daga daga daga

 

[LightWarrior]

How Do I Read Those Tables???

I was hoping to keep the insurance down by going for a 115 and bumping it up to 150. If i'm starting at 140bhp i may noot need the remap. that said, i'll be bored afetr 6 months, so maybe i will!

i'll try and look up insurance grps for both versions.
I defo cant afford the new MJET, as its so new. However, maybe after the summer when the next lot come out.

Buzz
the poster formerly known as LightWarrior

 

[Anonymous]

tables

Nige, are you able to give a little more info on what these tables of figures mean and how they compare against standard outputs?

Andy

 

[AlfaNige]

Re: tables

1. Pre tuning... these are the stats before the car was tuned
2. Post tuning.. these are the stats after the car was tuned
3. 0-60 is the 0-60 time (s=seconds g=g-force ft= distance travelled in ft)
4. 50-70 is the 50-70 time (as above)
So you have the comparison from stock to tuned, using the same driver on the same road on the same day,

 

[LightWarrior]

Re: tables

Aaah, thats makessense. i was reading S as distance, so i started off wrong straight away! lol

Buzz
the poster formerly known as LightWarrior