Can all diesels be mapped?

tjw2007 · 15-02-2008, 04:30 PM

Hi, I've been driving a Kia Ceed diesel, of all things, as a courtesy car for the last two weeks, and quite honestly I've been impressed - it has a real kick in the acceleration (it's the 113bhp LS version), so I'm thinking about getting one. I was wondering as it seems to have a turbo 'kick' does that mean it has a turbo fitted and subsequently can it be mapped? I've noticed on the parkers website that it's listed as having a common rail fuel delivery, not turbo, but it feels like it has. Any knowledgeable folk got any ideas?

Thanks

waynne · 16-02-2008, 03:36 PM

All cars with an electronic control unit can be remapped, although some require a replacement uninit. However it is only worth doing on a diesel with a turbo as the power gains are much better. Not sure if the Ceed is a TD or not, fingers is probably the man to ask as he's working for Kia.

pgarner · 16-02-2008, 03:47 PM

the ceed is a turbo diesel, pretty much all are now with the common rail.

the common rail delivery is a new way for diesel to get better power and economy from the engine it works, i believe, by using 2 fuel pumps - 1 low pressure to pump it from the tank then another to another high pressure one near the injectors. basically it means that the diesel keeps coming through at the high pressure required for the engine to work rather than losing pressure. HDI or fingers are the folk to ask about what pressure goes through its a lot more than the 2-4 bar that petrol flows at

HDi fun · 16-02-2008, 08:37 PM

The Ceed is definitely a turbo diesel - there's no way any non turbo diesel will deliver 113bhp without unless it was 3 to 3.5 litres in capacity. And there's no way you'd fit an engine that size uner the bonnet.

All modern diesel cars are turbocharged - the only exception being some of the VW Groups SDI badged ones. But they are spineless - 68bhp from 1.9 litres - what's the point.

The Ce'ed diesels are 1.6 litre units. Both have turbos. The lower powered one is 89bhp; the one you're driving is 113bhp. Whether you'd get the 89bhp up to 113 is doubtful as it probably won't have an intercooler.

The high pressure injection is also key to performance and economy. Fuel raill pressures are typically between 1300 and 1800 bar. Yes, that high. Not PSI, BAR!!!

It's is probably mappable, although some of the Middle Eastern cars use unique CPU's, which could cause some delay in finding a specialist.

I urge you to avoid plug-in tuning boxes; they're crap and will leave you with emissions problems and poor economy.

I'm a big fan of Celtic Tuning and I know the work on Hyundai diesels with great success.

I reckon that the 1.6 Ce'ed would go from 113bhp to about 150 without compromising economy or reliability. The increase in mid range shove will be massive. You'll get fourth gear acceleration times that make three litre petrol saloons look a bit dowdy. All this torque means massively easy overtaking.

Go for it!

tjw2007 · 17-02-2008, 02:41 PM

Regarding the 113bhp Cee'd, I've been really impressed by the power and really couldn't believe how good it was at the beginning, so I decided to test drive a Peugeot 207 1.6 HDi sport as a comparison as the Peugeot diesels are supposed to be quite good. Well, the Peugeot had absolutely nothing on the Cee'd, even though the specs are really similar, the Cee'd has just got so much more power, I was surprised again! I'm just wondering now how the 1.9 Golf diesels might compare.

HDi fun · 17-02-2008, 05:32 PM

Pug's 1.6 HDi is designed purely for economy. A remap would help.

The Golf 1.9 in 150bhp spec will go to 200 with a map.

Again, though, it's the torque that your're driving. BHP is only a function of torque and revs

pgarner · 18-02-2008, 06:11 AM

the golfs even with the 130bhp engine are nice to drive both 130 and 150 can be easily taken to 200bhp without too much problems. as long as they have the PD (twin pump or common rail in most terms) engines fitted like HDI said dont try the SDI engine as there is no turbo fitted and youd be better going and gettin a push bike

have a look at Do you talk power or drive torque

to see what HDI is on about BHP and torque being related to the revs

if your really bored read below

the skoda fabia vrs uses the same 130 engine as the golf go on youtube and look for fabia 260bhp ( very smokey )

tjw2007 · 18-02-2008, 04:24 PM

Another aspect of the Cee'd was the fact that its insurance group is 6 which is very wallet friendly. Is there a more powerful diesel, say bhp of 120+ or substantially more torque that's is under, say, group 8 or 9?

Cheers

HDi fun · 18-02-2008, 05:17 PM

unlikely - although if you remap the ce'ed your insurance premium will go up anyway.

Insurers are getting wise to this re-mapping lark. Although it's undetectable by casual examination they would conduct a thorough diagnostics check if they thought you'd played with the tuning and not declared it to them. This leaves you stuck - void policy and a motoring offence charge for driving without insurance.

fingers · 18-02-2008, 06:15 PM

The Pro Cee'd ha just been launched with a 2.0 turbo diesel option rated at 130bhp but this suffers from massive amounts of turbo lag and doesn't feel anywhere near as responive as the 113bhp 1.6.

Also we have just had the software delivered to work this morning so you can remap Cee'd ECU's at the dealership. We've not had a play yet though.

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