Re mapping

[Kittycarter]

Has anyone had any experience of having the diesel engines on a boat "chipped".

Just wondered if they are as good as they claim. Improved power, torque and improved fuel consumption..

 

[Beyondhelp]

Would love to see some real tests on this... I bet there would be some explaining to do when compared to the claims.

 

[rubberduck]

Done it on some vans, yes it does work if the basic engine comes in say 100 & 125 (Renault Master)you can just upgrade the 100.

 

[PCUK]

As I understand it, the needs of a boat engine are quite different to those of a car engine so the mapping would have to be dedicated to the boat engine. Worked OK on my Navara with an extra 40hp but I'm not sure I'd want to risk it miles out at sea.

 

[Latestarter1]

We did this to death a couple of years ago.

Plus the fact if you were to double the power available from the engine boat would go no faster so what is the point.

 

[volvopaul]

We did this to death a couple of years ago.

Plus the fact if you were to double the power available from the engine boat would go no faster so what is the point.

Go on LS say it, props move boats not engines. Done.

 

[Ian h]

There is a chap from Southampton dry stack. "Peter Unwin " that did remap his volvo D6'sfrom 375 to 420hp and combined with rework of props managed to increase the speed of his Hunton 37 . He however did quite a few other mods to increase speed even further

link
http://www.boatmad.com/forum/showthread.php?t=10046

 

[[2068]]

Of course this is possible, but you end up chasing upgrades.
New props, bigger heat exchangers, different injectors, uprated cylinder heads ... ££££ for a couple of extra knots?

 

[[2068]]

We did this to death a couple of years ago.
Plus the fact if you were to double the power available from the engine boat would go no faster so what is the point.

If you were to double the power of my engines, my outdrives would explode.
Assuming the outdrives were replaced with drives that could cope, the propellors would turn into cauliflowers.

 

[Latestarter1]

If you were to double the power of my engines, my outdrives would explode.
Assuming the outdrives were replaced with drives that could cope, the propellors would turn into cauliflowers.

QSB 5.9 480's on Mercruiser NXT out-drives drive snap shafts for a pastime and clutches only live for 50 hours before starting to slip, NXT drive works well with big block gasoline, behind a QSB lasts as long as disposable cigarette lighter. All three in Huntons have been re-powered with Volvo Penta D6 435 engine/drive units. Can you imagine uprating one to even higher power and torque.

Remap company in Australia do a QSB 5.9 tune of stock 480 calibration uprating it to 615 hp with over 1,100 ft lbs of torque. QSB has internal lube oil cooler which runs out of capacity at anything over 560/570 horsepower, go over this for any length of time and lube oil temperature is over 128C in a trice, heading for 150C where lube oil characteristics are permanently altered and lube pressure drops like a stone. Do the people chip tuning understand this stuff, do they heck!

 

[Kittycarter]

Thank you evryone, and point taken.

Going to leave them as they are and not mess with things I dont understand. I certainly dont need more speed.

 

[Anders_P42]

Take the cash you were going to spend on remap and new prop and spend it on a few mid-season lift/scrubs.

 

[rafiki_]

Take the cash you were going to spend on remap and new prop and spend it on a few mid-season lift/scrubs.

 

[KevB]

He however did quite a few other mods to increase speed even further

Having just looked at the link you posted, I'd say your comment is the forum understatement of the year :eagerness:. Must have cost him a fortune. Not sure about the front wing though..

 

[Ian h]

Having just looked at the link you posted, I'd say your comment is the forum understatement of the year :eagerness:. Must have cost him a fortune. Not sure about the front wing though..

He started off thinking of engine upgrade but changed them for 435hp. The front wing is different. He is not affraid to experiment with aerodynamics in the quest for speed , Can only guess at how much he has spent ,

Another one of his projects
http://www.offshoreonly.com/forums/general-boating-discussion/285472-sv29-ilmor-725-indy.html

 

[volvopaul]

QSB 5.9 480's on Mercruiser NXT out-drives drive snap shafts for a pastime and clutches only live for 50 hours before starting to slip, NXT drive works well with big block gasoline, behind a QSB lasts as long as disposable cigarette lighter. All three in Huntons have been re-powered with Volvo Penta D6 435 engine/drive units. Can you imagine uprating one to even higher power and torque.

Remap company in Australia do a QSB 5.9 tune of stock 480 calibration uprating it to 615 hp with over 1,100 ft lbs of torque. QSB has internal lube oil cooler which runs out of capacity at anything over 560/570 horsepower, go over this for any length of time and lube oil temperature is over 128C in a trice, heading for 150C where lube oil characteristics are permanently altered and lube pressure drops like a stone. Do the people chip tuning understand this stuff, do they heck!

I've only ever come across one chipped diesel car that so far is still trouble free, an Audi A4 . Eventually they all end up with problems that relate to other engine components, especially cat conveyors, egr valves sooting up causing diagnostic issues. I believe that the original manufacturer would give the up rated hp figure should it prove successful as a prototype .
My van is 2 litre 140 ps, vw also sell the same engine at 180ps twin turbo, its a joke engine forever in the dealers being sorted, so they didn't exactly get that one right, nearly bought one myself!

 

[Flynnbarr]

I've only ever come across one chipped diesel car that so far is still trouble free, an Audi A4 . Eventually they all end up with problems that relate to other engine components, especially cat conveyors, egr valves sooting up causing diagnostic issues. I believe that the original manufacturer would give the up rated hp figure should it prove successful as a prototype .
My van is 2 litre 140 ps, vw also sell the same engine at 180ps twin turbo, its a joke engine forever in the dealers being sorted, so they didn't exactly get that one right, nearly bought one myself!

Really enjoy the engine threads even though most of it goes over my head!
On the truck forums owner drivers chip V8 Scania's,Volvos etc and don't report problems,just more power and better mpg?

 

[Questor]

I've only ever come across one chipped diesel car that so far is still trouble free, an Audi A4 . Eventually they all end up with problems that relate to other engine components, especially cat conveyors, egr valves sooting up causing diagnostic issues

You can add my BMW 530d to the list. I bought it new in 1999 and took it to Van Aaken at the Transport Research Laboratory for the remap / chip. I still have the car, and it has been the most reliable car I've ever owned.

15 years later and there have been no engine / drivetrain issues whatsoever.

I think Van Aaken no longer do this sort of thing, but were at the time talking about "chipping" / "optimizing" marine diesels. As far as I know, it went no further than just talking about it. As already said, there was probably little point.

Re the cars, I personally do not know of anyone that has run into problems after "chipping" their diesel engines.

 

[julians]

I remapped my old audi s3 (2.0 turbo charged petrol), and whilst it did improve acceleration significantly, the stock clutch wasn't up to it and wore out in 15000 miles.

Regarding remapping boat diesels, I wouldn't do it, too risky, who knows what else in the system would fail as a result. but i'd imagine that it would give better acceleration, but no improvement in top end speed.