Viewing: Best diesel engines to remap

**Poddy** · 20-01-2010, 10:45 PM

Nah, your boys in OBD regularly cailbrate there rolling road. its very acurate

A standard Focus ST was put on the rollers and the power came up at 223bhp, book says there 225, so i think its pretty acurate, plus when mine was done the before test came up at 93bhp book says my car is 89 Standard

If you have a look at there website or see there threads on RMS you'll see there rollers are pretty acurate, unlike others

**Matt L** · 21-01-2010, 12:16 AM

I dont trust rolling roads, the way the car drives is what I think is important. A live map is the best money can buy in my opinion, a proper custom map in real conditions mapped to how you personally drive. expensive, but in my opinion worth it.

dci130 · 31-01-2010, 04:26 PM

does anyone have any knowledge on tuning the renault dci engines?
i have a 2003 renault megane 1.9130 dci (6 speed) sport tourer (estate).
i cant find much information on what can be done to these engines without sacrificing reliability too much?
Does anyone have any suggestions?
thanks

***HDi fun*** · 31-01-2010, 05:22 PM

Quote:

Originally Posted by dci130

does anyone have any knowledge on tuning the renault dci engines?
i have a 2003 renault megane 1.9130 dci (6 speed) sport tourer (estate).
i cant find much information on what can be done to these engines without sacrificing reliability too much?
Does anyone have any suggestions?
thanks

I doubt you'll sacrifice much reliability - the Renault diesels seem to offer enough problems in stock tune anyway.

Celtic Tuning should be able to get about 170bhp from your engine without any compromise in reliability.

**Poddy** · 31-01-2010, 07:58 PM

the biggest problem with the 1.9 dci engines is the turbo, its a really poor one, taking the turbo from the 175dci will be more reliable, plus you can get abit more power out of it that way.

***HDi fun*** · 31-01-2010, 08:42 PM

Might as well just buy a dCi 175 and remap that then.

**Poddy** · 01-02-2010, 07:05 PM

probably would be.

**Bertrum** · 02-02-2010, 02:45 AM

Quote:

Originally Posted by HDi fun

I doubt you'll sacrifice much reliability - the Renault diesels seem to offer enough problems in stock tune anyway.

Brilliant! Quality post!

**Poddy** · 02-02-2010, 03:46 PM

i noticed an improvement on the 82bhp 1.5 dci engine i had in my megan after it was mapped, wasn.t near a garage for 9months, thought that was great lol

***HDi fun*** · 02-02-2010, 07:02 PM

I think they go to nearly 100bhp as well.

**Poddy** · 02-02-2010, 07:58 PM

my 82bhp went up to 103 after it was mapped

***HDi fun*** · 03-02-2010, 12:01 AM

Quote:

Originally Posted by Poddy

my 82bhp went up to 103 after it was mapped

Sounds about right.

Car makers do undertune their turbo-diesel models very significantly. Part of the justification is to ensure 100% reliability during the warranty period. This is especially true in the UK - as a nation of car owners we're not known for our attention to regular servicing.

The other reason is that the car makers have to make a space in the market for petrol models - no maker want to be seen selling a diesel car that completely eclipses it's petrol stablemate in performance terms.

**MustangMan** · 24-05-2010, 12:12 AM

Hey, I just found this. Engine programmer for 2004 Dodge Ram Cummins 5.9 L 24v. Adds 154hp! Check it out for yourself!

https://www.superchips.com/#pn=onlin...productdetails

***HDi fun*** · 24-05-2010, 03:28 PM

Can't be a particularly well setup engine in the first instance if there's 154bhp worth of slack built in.

**claymore** · 24-05-2010, 05:42 PM

Quote:

Originally Posted by HDi fun

Can't be a particularly well setup engine in the first instance if there's 154bhp worth of slack built in.

It would appear that dodge make two variations of the same engine, a 305bhp and a de-tuned version with 250bhp, so its the same chip for both. so 115bhp increase on the 305bhp engine, but still good value for money at $360.

***HDi fun*** · 24-05-2010, 06:05 PM

Quote:

Originally Posted by claymore

It would appear that dodge make two variations of the same engine, a 305bhp and a de-tuned version with 250bhp, so its the same chip for both. so 115bhp increase on the 305bhp engine, but still good value for money at $360.

5.9 litres to produce 305bhp is barely 50bhp/litre.

**MustangMan** · 24-05-2010, 09:44 PM

Diesels are for torque, by the way.

**pgarner** · 24-05-2010, 10:02 PM

we know this as weve had, using the word cafefully here, performance diesels for a long time unlike the americans where diesel has only really kicked off in the last few years.

***HDi fun*** · 25-05-2010, 01:08 PM

Quote:

Originally Posted by MustangMan

Diesels are for torque, by the way.

We know that.

**MustangMan** · 26-05-2010, 03:18 AM

Quote:

Originally Posted by HDi fun

5.9 litres to produce 305bhp is barely 50bhp/litre.

SIZE MATTERS.

**MustangMan** · 26-05-2010, 03:29 AM

Here in the US they go for torque over hp because a lot of people use in trucks(i love trucks!

) for towing and construction. The only diesel car we have here that sells in even somewhat respectable numbers is the VW Jetta TDI. We have yet to make a diesel engine like the one in the Audi R10 TDI. We probably won't for a while.

***HDi fun*** · 26-05-2010, 09:42 AM

Quote:

Originally Posted by MustangMan

SIZE MATTERS.

To a point, yes. Moreso if you're looking for long haul indestructibility. Possibly this is the reason that large commercial vehicles use engines of 15-20 litres even if 'only' 700-800bhp.

**jarrus** · 21-06-2010, 12:18 AM

Yeah those dodge cummings engines are very beasty, You can double there output quite easily,
this is a different diesel but the GM diesel that is offer in chevy truck was put into an old school chevy on pimp my ride, it ran on bio diesel and well over 600 hp, it beat a lambo in a drag race as well

i suppose it's simple really, if you want power then bigger is always better