Anyone had their diesel remapped ?

[FISHGUTS]

I'm thinking of getting my 156 2.4 jtd remapped from 175 to 225 bhp.

I've heard it's meant to increase, or at least not decrease mpg and the plus side of the extra bhp, but what are the downsides ?
Does it kill the engine, clutch, etc ?

Anyone had it done ?

 

[JKD]

I'm also interested in this for my Accord 2.2 iCDTI. It's a big lump for only 140ps, so I'm sure there's plenty of spare capacity

 

[Ron Burgundy]

Slight False hoods i'm afraid

but, thing to remember is, that by remapping / chipping, you will not need to change gear so much thanks to the new found torque so mpg either stays the same or improves but ever so slightly.

Other thing to remember is that a remap is different to a chip in that;

a remap raises the ceiling of fuel and air ratio where as a chip only increases fueling. Also think about increasing boost on the turbo as this will reduce the extra smoke produced by the chip / remap and turn it into more torque.

Are you sure you want to push the JTD that far? Seems awfully high for what is not necessirly an ultra reliable unit to start with.

 

[FISHGUTS]

Are you sure you want to push the JTD that far? Seems awfully high for what is not necessirly an ultra reliable unit to start with.

It's the newer mjet engine. A tweaked 200 bhp version is in the 159.

 

[JKD]

Slight False hoods i'm afraid

but, thing to remember is, that by remapping / chipping, you will not need to change gear so much thanks to the new found torque so mpg either stays the same or improves but ever so slightly.

Other thing to remember is that a remap is different to a chip in that;

a remap raises the ceiling of fuel and air ratio where as a chip only increases fueling. Also think about increasing boost on the turbo as this will reduce the extra smoke produced by the chip / remap and turn it into more torque.

Are you sure you want to push the JTD that far? Seems awfully high for what is not necessirly an ultra reliable unit to start with.

Ah didn't realise remap and chip were different. Anyone have any personal experiences of getting more from the iCDTI engine?

 

[Ron Burgundy]

Ah didn't realise remap and chip were different. Anyone have any personal experiences of getting more from the iCDTI engine?

Yes, the iCDTi is a very good lump to tune up definately to a firm 170bhp. After that unfortunately serious mods need to be done if you want to push reliable power. Larger IC, up the boost (pretty sure they are electronically controlled here). Other than that, the crankshafts wont take too much more so will need subtle fettling if you want to hit the 200bhp mark or above. A larger turbo would help here, but IIRC there are clearance issues, but there is sure to be something to suit

 

[WJA96]

I've had my Skoda Fabia vRS remapped at JabbaSport in Peterborough - from 130bhp to 190bhp. Originally I had the chip-type standard upgrade map, but that only went to 165bhp. The car was remapped on BP Ultimate, so I have to use that or Shell V-Max (55CET). I also had to have a new, uprated clutch fitted as the standard one was slipping with all the extra torque. And I also had the 312mm brakes from the Audi TT fitted. My insurance went up £160/year as a result of declaring the car modified. It definitely is more smokey now, but it's unbelievably quick.

The single biggest downside is that you write-off the warranty as the dealers can definitely tell a full-on remapped car from a standard one.

 

[Duke]

If I had a diesel, chipping it would be the first thing I'd do. They can have plenty of power squeezed out of them

 

[Draeger]

A load of guys over at the Vectra-C forums have had their 1.9 CDTi's and 3.0V6 CDTi's remapped with fantastic results.

Its one of the first mods I have planned for my 3.0V6 CDTi SRi Vectra.

Takes it to 220bhp and 484Nm torque.

Really easy to squeeze extra power out of a turbo diesel, well worth the investment in the kit IMO.

 

[WJA96]

Takes it to 220bhp and 484Nm torque.

What do the people on the Vauxhall forums say about clutch life with 484Nm of torque? I'm running about that and 'standard' clutches aren't rated for that. At every gear change you get a little chirp from the clutch as it tries to keep it all together. The other issue you haven't mentioned is how your traction control/ESP will cope with all that extra oomph. I can get wheelspin in 4th gear in the wet when changing gear and in 3rd gear in the dry. That's with the traction control turned ON! The engine might be able to produce it, but if the chassis can't handle it then the TC/ESP shuts you down, not handy in the middle of an overtaking opportunity.

Really easy to squeeze extra power out of a turbo diesel, well worth the investment in the kit IMO.

It's also the first thing an insurance investigator will look for in the event of a big accident. Do tell your insurance you are running a modified car!

 

[Scania]

Sod re-mapping, after watching 5th Gear the other night, I'm thinking of buying an old merc & running it on used chip oil!

 

[NickXX]

When February comes around, and I can change insurers, I'm definately getting a remap. My current insurers (Elephant) won't cover remaps and I've stuck my foot in it already by asking them to stick one on my policy .

Seems like a lot of gains can be had for such a cheap mod, with very few complications.

Try www.e-maps.co.uk if you want a remap. Highly recommended over at BMWland, and they will come to you to remap your car. I was quoted £325 to get mine done. Also note that they can remap your car exactly how you want it - so you don't have to take it right up to the suggested maximum power.

 

[Ron Burgundy]

A load of guys over at the Vectra-C forums have had their 1.9 CDTi's and 3.0V6 CDTi's remapped with fantastic results.

Its one of the first mods I have planned for my 3.0V6 CDTi SRi Vectra.

Takes it to 220bhp and 484Nm torque.

Really easy to squeeze extra power out of a turbo diesel, well worth the investment in the kit IMO.

That will be fun considering even the gearbox is only supposed to cope with 360nm max according to manufacturers recommended guidelines. If people are prepared to run the risk, then go for it, but where a lot of diesel owners fall short is in the believe that their engine is indestructable. Its not, you're running sometimes in excess of 20psi through a very small turbo which will get starved of oil very quickly with continued use. The gearbox cant take the torque let alone the clutch, and as for the inside of the engine which Diesel owners never seem to touch. Well, good luck getting 80k miles out of after modding. A sensible and experienced diesel tuner will, and should not, suggest taking the car over 50bhp above its standard state of tune, any more without other serious mods is suicide. The reasons are quite simple, I can provide more details of why if anyone wishes.

With the exception of Nick (i assume its a 330d?) the rest, especially the GM fraternity, are playing a risky game

 

[chrislusty]

AngelTuning has a good rep with with alfa owners.

Also try asking on the alfa forums.

 

[FISHGUTS]

AngelTuning has a good rep with with alfa owners.

Also try asking on the alfa forums.

Yes, everyone seems to rate Angel tuning and I've asked on the alfa156.net forum, alfanige responded but he's biased.

 

[melchy]

Im pretty sure i read a review that stated that the 1.9 CDTi diesel engine in the Vectra was capable of producing much more power and torque, but they had to limit it due to it eating the gearbox. The review mentioned that it would need to be uprated for the upcoming diesel Vectra VXR (which im not sure exists as of yet).

 

[JRS]

Are you sure you want to push the JTD that far? Seems awfully high for what is not necessirly an ultra reliable unit to start with.

Go on then, I'll take the bait. What reliability problems does the Fiat group JTD engine have?

I've known of electrical problems, trim pieces rattling, and the petrol engines do hate it when you try and push the service interval a little too far, but the JTD is a pretty robust unit.

 

[PMKeates]

With the exception of Nick (i assume its a 330d?) the rest, especially the GM fraternity, are playing a risky game

Is the 330d quite capable of handling bigger-than-most gains then?

 

[Ron Burgundy]

Go on then, I'll take the bait. What reliability problems does the Fiat group JTD engine have?

I've known of electrical problems, trim pieces rattling, and the petrol engines do hate it when you try and push the service interval a little too far, but the JTD is a pretty robust unit.

Absolutely, but like any diesel, its not without its limitations. The Alfa's have a notoriously bad air intake threshold which is limited by the overall size of the intake aperature. This can't be increased, so the ceiling limit of the MAF is reached well before the claimed 225bhp from the remap. Its all fuel after that which makes it incredibly smokey, kills the EGR and causes it to run like poop!

 

[Firestar_3x]

Remove MAF run it off a MAP problem solved.