3 litre tdi has had a remap done thats taken it up to 270bhp and 610 nm , whats the next tried and tested step for generic diesel tuning ?

 

Bigger intercooler, hybrid turbo, hi flow injectors...going to be difficult under the new MOT rules.

 

Over 600nm!!!! I bet that feels fookin rapid

 

It goes in tomorrow for new rear tyres I'm just looking for cheap modifications, not wanting to go down the route of spending fortunes!

 

I've also warped my 350 brembo discs so it's going in for new ones this week as well in time for the German car day at Crail dragstrip

 

Bigger intercooler for sure, then a decat. Does it have a dpf?

 

I still don't fully understand the difference between horsepower and torque but it pulls like a fooling train

 

About right!

 

https://www.motorauthority.com/news/...wer-and-torque

H.p / Torque All explained above.

 

I had a mate that used to think that torque was your acceleration and power was your top speed, I said does it just decided that it’s accelerated enough and sit back and let power take over lol.

 

That's pretty much how tuning/garage guys have explained it to me in the past.

 

It’s a load of bollox fuzzy

 

That's "specialists" for you

 

So what components and modifications will produce specially eithet torque or bhp or are they both linked to the other?

 

They are linked as Power (BHP) is a formula of torque X Revs

This is why cars with low torque make their power in high revs...Ferrari 360 is quite low on torque so makes peak power up near 8000 / 9000 rpm, i.e. you need the torque figure X many more revs to get a big number....same on a sports bike.

Cars with low down, high torque don't need massive revs for the power output and the design of a high torque engine tends not to rev as much.

 

How will the new MOT rules make it harder? Not trying to be clever....if the EGR etc is all in tact and no soot I do not see that the tester would be looking for a standard or hybrid turbo etc...

Would it be an emissions thing? could that not have an MOT map?


I think an Intercooler will give more consistent power in different scenarios but will only add more power if the map is pegged back now due to high intake temps.

 

You need to find out off your mapper what was the reason he stopped at 270hp, what was the limiting factor and go from there.

 

He said mileage, it's a 2006 car with just under 140k,although he did say it was a strong engine and box.he said he didn't want to push it to far.

 

Then surely it’s upto you wether you want to push the boost further and accept the risk

 

All the generic maps state the same 45bhp and 90nm extra with no stage 2 available for my car. He's set mine to between 270-280 and between 600-610 which is a little bit more than a generic map. Apparently.
Generic map is 265 and 600. He has many years experience in the game and remaps and tuning is all he does at his rolling road place which we used to go to in the early 90's so Ill take his advice on board.

 

yep, ill take his advice on board then do what I want and blow my engine up anyway
will it need more computer wizardry alterations done after putting a bigger intercooler on or will that give fit and forget gains in itself?

 

If the intake temps were high then the intercooler May release power but it sounds like the mapper was keeping within the limits of what you had in place.

 

Then it’s him you should be asking then

If he thinks your engine is too leggy to tune further then an inter cooler or exhaust won’t change that.

 

ive been told by others ive spoken to that know mercs that the 3 litre tdi engine in my car is bullet proof and responds well to tuning. its all about opinions, hes cautious so I don't blame him if something went wrong .

 

Loads of engines in scrap yards, they made loads. Either change exhaust and cooler and maybe run less boost for same power OR wind it up and replace what breaks.

My AmG ran 500bhp and similar torque number, the box failed at 100,000 miles but it was used hard. It cost Ł3k to fix but have found same repair at Ł1800

 

I've already had a stainless steel exhaust made for it. What amg did you have? one with the 7g tronic auto transmission in mine thats in the c32, c55, c63 e55 e63 etc?

 

Its difficult to extract greater power from a diesel without creating more soot. Any visible smoke on a DPF equipped car will be a fail, and visible smoke is something diseasels are very good at when tuned, unless you're very careful.

 

The limit on this car is the turbo, the B8 has larger setup which flows over 300bhp.

 

What's a b8? The newer model?

 

I wouldn't say the 360 has bad torque for a N/A engine.

I believe the reason Diesel's cannot match an equivalent petrol in power is because they can't rev high (due to their construction). RPM increases VE, so will result in more power, all things being equal.

Agreed, also there are poor maps out there that just add boost, without remapped injector timing.

Martin

 

Sorry if its common kowledge but what vehicle is it?

 

Mercedes c320, Estate.

 

so all engines with the same torque will produce the same hp at any given amount of rpm?

 

All you need to know.

Horsepower sells cars!

Torque wins races!

 

Tell that to F1 teams

 

Complete nonsense yanky saying, F1 cars are the fastest cars round a circuit and they have loads of horsepower and fook all torque ! Lmao

 

Did they not restrict the power output of rally cars after group B as they where too fast and dangerous but you can have unlimited torque?

 

Ive upset some people

 

Back in the good old days of F1 when they had the high revving normally aspirated V8's and the even higher revving V10's, these engines produced a lot of torque but across a very small band of revs due to the very short stroke of the pistons. Therefore to make these things go, you had to keep it revving high up the rev range in that very narrow band. Let the revs drop and they'd struggle to pull the skin off a rice pudding.
The modern hybrid turbo charged F1 engines produce a hell of a lot more torque that is available from low down in the rev range and has a much wider band. This is due to the pistons having a much longer stroke which therefore means they can't rev as high, but more importantly the presence of a turbo charger forcing air in to the cylinders (more air = bigger bang = more force on the pistons = more torque), and finally the addition of electric motors which produce loads of torque instantly.

 

The old F1 engines produced so much power simply because of the insane amount of revs the could pull. After all, power is just a measure of how quickly work is done, or how quickly torque is produced. If an engine can rev to nearly 20,000rpm it's going to be producing torque very quickly.
At least I think that's how it all works!