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#475905 - 21st Feb 2011 7:47pm what are these like ?
vw_kyle Offline
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Registered: 27th Dec 2006
Posts: 1962
Loc: wirral
clicky

Looking at these on ebay apparently they give you an extra 35bhp are these just a scam or any good.?

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#475918 - 21st Feb 2011 8:26pm Re: what are these like ? [Re: vw_kyle]
sean Offline
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Registered: 26th Jun 2005
Posts: 541
Loc: prenton
load of bollox i reckon

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#475925 - 21st Feb 2011 8:36pm Re: what are these like ? [Re: vw_kyle]
MrPhil Offline
Forum Master

Registered: 14th Apr 2006
Posts: 2367
Loc: Prenton
Want a proper remap us an www.evolutionchips.co.uk dealer.

Nearest to us is St helen's iirc Divamotorsport
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#476040 - 21st Feb 2011 11:32pm Re: what are these like ? [Re: vw_kyle]
StuyMac Offline

Wiki Master

Registered: 24th Nov 2003
Posts: 12002
Loc: Wirralshire
Very crude way of getting the car to throw more diesel in.

Generally more fuel on a diesel makes more power and these trick the engine in to adding more fuel. They dont adjust the timing or boost, so expect more black smoke.

Proper way to do it is will a proper remap which will adjust the timing and boost level throughout the entire rev range. With a proper remap you will get not only the added performance on WOT but better economy on cuise also smile
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#476045 - 21st Feb 2011 11:35pm Re: what are these like ? [Re: vw_kyle]
Nelzy84 Offline
Forum Guardian

Registered: 21st Dec 2010
Posts: 3354
Loc: Wirral
withthat well said mate, remaps better than ecu bolt ons imho
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#476072 - 22nd Feb 2011 12:11am Re: what are these like ? [Re: Nelzy84]
spannerman Offline
Newbeee

Registered: 16th Dec 2003
Posts: 14
Loc: wirral
what a scam! as Sean said its a load of bollox...

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#476121 - 22nd Feb 2011 4:26am Re: what are these like ? [Re: spannerman]
TheDr Offline
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Registered: 23rd Feb 2010
Posts: 2631
Loc: Wirral
I had a guy come into my place (about 4/5 years ago now) and ask if I knew anything about resistors, what they did, could I tell him the value of one he had, oh and where he could get them cheaply.

I gave him the info and a few months later he started to market them on eBay and the like, a few adverts in the car mags (so you can put "As seen in xyz") and he was selling a fair number of these.

The first lot were just a resistor with heat shrink tubing around it, then they were put into a small plastic "module" with two wires coming from it, which made it look quite good with custom packaging.

The address this guy gives in the ad is this area (only a mile or two from me) so I'm guessing, and this is only a guess, that it's the same guy but with a better designed unit so you don't have to solder it anymore.

I seem to recall (and this was a few years ago) that he said something about it tricking the ECU into thinking the choke was on and so compensating for it (I don't think he was too sure, I think he was just marketing an idea he'd pulled from somewhere).

So, if it is the same device, and it is the same guy, you will be buying a 2p resistor in a fancy box......Pet Rock anyone?

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#476131 - 22nd Feb 2011 8:50am Re: what are these like ? [Re: vw_kyle]
Nelzy84 Offline
Forum Guardian

Registered: 21st Dec 2010
Posts: 3354
Loc: Wirral
Lol Dr, well said,I've seen a few of those in eBay also, even seen them for petrol Jag xjs through to modern xk's, anything claiming to improve your bhp by 35hp for next to nothing is guaranteed to shag your engine or not work as expected, swerve on this occasion mate
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#476135 - 22nd Feb 2011 8:55am Re: what are these like ? [Re: vw_kyle]
StuyMac Offline

Wiki Master

Registered: 24th Nov 2003
Posts: 12002
Loc: Wirralshire
He used to post on here - the guy that runs Celox....

The resistors for the petrol cars sat between the air flow meter and ecu to fool the ecu that the hotwire sensor was cooler than it was, so the ecu would throw more fuel in.

The principle of the diesel tuning boxes is to increase fuel delivery to the engine increasing power & torque.
The way the fuel delivery is increased is by manipulating the signals between the vehicles ECU (Electronic Control Unit) & the engines injection system.

Both methods only add more fuel, there is no other alteration. Admittedly the diesel tuning boxes will give you more power, as more fuel = more power in a diesel, but its very very crude.

Also, if you have a modern commom rail diesel engine, the ECU is harder to fool so your gains will be less, or it will flag up and error on the ECU.
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