Tuning the Palio 1.1/1.2

Please do not post any question other than tuning question regarding the Palio 1,1 or 1.2. I will cover the other Palios in different threads and all other Fiats in separate threads too.

To start with I never have tuned a Palio. The reason for it simple. We haven't got them in most of Europe and definitively not in my place of current residence. However we have the Punto Mk1, which I own one and have worked on many. The Punto Mk1 and the Palio are very similar.

The problem solvintg is still slightly different. The chassis is slightly different allowing not for identical solutions.

Both engines, the 1.1 (1108cc MPI0 and the 1.2 (1242cc MPI) I know very well.

The first step I go about is usually the AIR (air intake revision.

The AIRs for the Palios are under development and I hopefully will have a solution soon. But I need a bit of help from you guys. I need a couple of shot from under the bonnet and in due course some measurements taken for the final routing.

As soon as the AIRs are finished we will sort the re-mapping. Further modifications I will go in afterwards with some photos. I will try to give as many before and after mod dyno graphs as possible but it may take some time.

 

Nice thread drifter.

I have a Palio 1.2 (1242cc MPI) and I'd like to have some more horses attached to it. I'll surely post the pictures that you requested tomorrow itself. Do let me know what kind of measurements you want.

Is it easy to remap the 1.2L? It would be awesome if we could do it. Never heard of anyone doing such things in India. The common belief is, Fiats are impossible to mod/tune!

 

Please add a clear picture of the ECU label (unless it is the small 59AF ECU. Then I don't need a picture).

The first measurement I need is the diameter on the throttle body with a picture of the cap taken off.

Re-mapping is fairly easy on the Palio.

I do not know where people get the idea of Fiats are impossible to tune. I never had a problem with it.

 

Here are the pictures.

To start off with, a picture of my car's (dirty) engine bay ::V

[attachment=3:3dh1htng]EngineBay1.jpg[/attachment:3dh1htng]

The ECU: (Click on the picture for the high res version if it's difficult to read the numbers)

[attachment=1:3dh1htng]ECu1.jpg[/attachment:3dh1htng]

Throttle body with cap opened:

[attachment=2:3dh1htng]Tbody1.jpg[/attachment:3dh1htng]

The overall diameter is about 10.3 cms, and the opening has 6cm diameter. However, the hole has a tapering as it goes down till the valve, and the diameter at the valve is about 4 cms.

[attachment=0:3dh1htng]Tbody2.jpg[/attachment:3dh1htng]

 

Clevermax, you are a star.

I know this throttle body very well. It used to be on the Punto 75 in Europe. T omake a kit for it is a bit troublesome, but then I don't like things in life easy.

Also this foes mean that we have 2 variants of the Palio FIRE. The one in the picture is the early type.

Anyway, enough of my waffling.

I need now 2 more measurements from you, which is the hight of the bop (the black cap on top of the throttle body) and the clearance between the top of the bop and the bonnet/bonnet sound insulation.

Irf you have i phone or eqivalent, can you make some acceleration testing? Now as it is standard and for when we have made the AIR and everything else.

In the meantime I crack the problem with the throttle body.

 

Thanks drifter. I'll post those measurements you requested by tomorrow.

I don't have a iPhone but my SE phone has accelerometer; it can't measure speed and acceleration because I don't have an app installed for that. Will try to get that too.

What about the ECU? Familiar with it?

 

The hard and software I have for mapping most likely will support the ECU. However, sometimes synchronisation issues can be a handful and I would like to have in my suitcase a virgin backup ECU. One way or the other we will be able to sort it out.

 

can you pl tell more about FAST LAMBDA sensor...i have heard/read that a fast lambda sensor in a PALIO will improve the the throttle response & mileage in bumper to bumper or city driving conditions... if this is the case then, which LAMBDA sensor suits PALIO 1.2...

 

I think there is some wires crossed on this. I have not seen a Palio yet that does have flt-by-wire throttle control. All cable throttle operated engines have instant throttle response.

To improve pick up and fuel efficiency a proper AIR, correctly deigned FFE and re-map are the best modifications.

 

I think Palio 1.9D sold in India has drive by wire.

These are the Palios sold in India till date:

Palio GTX (1.6)
Palio 1.2
Palio 1.2 Sports (14 inch alloys instead of 13 inch steel rims, fog lamps)
Palio S10 (1.6, shorter gear ratios; bliss to drive; named after the master blaster Tendulkar)
Palio 1.9D (The torque king)

After TATA-Fiat JV:
Palio 1.2 NV (Tweaked for more mileage; changes in gear ratios and ecu params (I guess))
Palio 1.1 Stile (Shed a lot of weight, less powerful engine)
Palio 1.6 Sports (Some numskull softened down the suspension than GTX)
Palio 1.3 MJD

Any other versions guys?

@drifter: The measurements are still pending from my side. I shall post them by evening.