I was looking at tuning box to give my mother punto a little boost which is a diesel its getting used to pull a trailor up some windy hilly roads.

 

I'm well aware of how they alter fuel pressure, i digress.

 

Seen this for petrol puntos, i cringed i honestly dont know how they get away it!

 

http://www.ebay.co.uk/itm/Chip-Tuning-Digital-Box-FIAT-GRANDE-PUNTO-Petrol-1-2-Chip-Tuning-ChipBox-/181120184003?pt=UK_CarsParts_Vehicles_CarParts_SM&fits=Model%3AGrande+Punto&hash=item2a2b9aaec3

15 - 30 ps from an N/A 1.2 Petrol!? Yeah right.

 

I'd report the item. Complete lies!

 

Phil

General consensus is that all of them are **** and more likely to do nothing but waste fuel and overboost/fuel arent they?

If you get a proper one then they can be good.

 

Most are literally just a resistor in a box that fools the car into thinking the engine is cold or there is more air coming into the engine then there actually is.

 

Phil

I've got one on mine, it came with the car.

 

Not sure if it is doing much but I don't have any problems with the car, touch wood.

 

But my mate had a re-mapped Fabia and we both agree that his pulled better than mine.

They alter the map sensor voltage generally, in the lookup table (2D x y axis) in the ECU pressure has a corresponding voltage thus injector duty thus AFR, this is also referenced in the ignition timing table. 

 

If you fake the voltage you can tell the ECU to not inject as much fuel thus run a leaner mixture thus more power, the problem is this also runs x degrees of timing and typically inadvertently more advance. Too lean and too much advance can melt pistons and reduce longevity to an extent it creates more power but you want to lean out and advance to a small degree sometimes when tuning obviously this is petrols.

 

Theezenutz, your is probably one that connects to the fuel rail not map sensor.

 

A rail pressure box is okay to a degree if its not jacked up too much but depends on the car and you wont get as much power safely, though 100% a remap is better.

Not sure, it's a piggy back that attaches below the engine cover, front of the engine on the right hand side of the rocker cover.

 

But I agree a re-map is always going to be better just not got around to having it done yet. Been busy upgrading suspension and braking components, also fixing worn/faulty parts. You know how it is.

Edited 28 January, 201412 yr by theezenutz

Not sure, it's a piggy back that attaches below the engine cover, front of the engine on the right hand side of the rocker cover.

 

But I agree a re-map is always going to be better just not got around to having it done yet. Been busy upgrading suspension and braking components, also fixing worn/faulty parts. You know how it is.

 

Off the top of my head i think the connector for the rail is on the right hand side.

I used to have a Dragon digital box on my vRS. Cost me £200 from the Dragon ebay store and sold it for £90 three years later. It had 7 settings from economy through to performance and i had it set to setting 4 as i found that to be the smoothest running.

 

The car went on the Awesome GTi rollers at a Briskoda rolling road day and recorded 166bhp and 299lb/ft so i think that's proof that not all tuning boxes are ****.  

 

 

 

 

Cheers

 

Dave.

Edited 29 January, 201412 yr by WaveyDavey

I too ran a dragon digital box on my PD130 Cordoba.

 

No noticeable increase in smoke but definitely a increase in poke!

 

The only problem I did have is now and then (couldn't work out a pattern to it) I would get this weird flat spot if I revved past 3000 rpm... would then suddenly pick back up at about 3200 rpm. Car was fine without the box with no flat spot.

 

My dad also had one on his T reg Sharon 110 TDI. Ran really well and livened the engine up loads. Felt more like a PD with more punch low down.

 

And as above yes the connector for the fuel rail is on the right hand side of the engine (looking straight at it) and is a big round connector on the PDs so it sounds like yours is a 'proper' digital one.

 

I'd still love a shark STS as that's the best of both worlds. The ability to quickly remove it but with the smoothness etc of a proper remap.

 

Phil

I used to have a Dragon digital box on my vRS. Cost me £200 from the Dragon ebay store and sold it for £90 three years later. It had 7 settings from economy through to performance and i had it set to setting 4 as i found that to be the smoothest running.

 

The car went on the Awesome GTi rollers at a Briskoda rolling road day and recorded 166bhp and 299lb/ft so i think that's proof that not all tuning boxes are ****.  

 

 If it was an a BLT engine, they turn out 150+bhp anyway! but still a result.

SWMBO has a Tunit box on her previous vRS, got 172bhp on 2 independent rolling roads with it fitted.

Of course a remap is, by it's very nature, mappable (face/palm) but you can't take it off and resell it unlike a Tunit or similar.....

Having said he above, SWMBO has a Jabbasport remap on her cure t vRS and is very happy with that also, thank you very much.