Chip for 300C

My Dads choice of car, I said 730d but he chose the 300c. He's only bought the chip to reduce fuel consumption and from the looks of it, that is exactly what this is supposed to do. We will only find out once it is installed...

According to DTUK, your assumption about conning the engine is correct and here is their reasoning.
 
The fuel economy benefits are largely nothing. Some people do report fuel economy savings but 50% of this is placebo effect and I bet the other 50% is people driving the car a little less hard as a result of a tiny bit more power being available.

ie - just driving it more economically in the first place would have done the trick.

It certainly wont save £200 of fuel!
 
Hmm... we'll see how well/if it works and I will report back it's effectiveness.

Back to the installation issue, can anyone see any issues I should watch out for when installing it? It says in the instructions to place the module in a place which avoids damp and excessive heat (and obviously moving parts). Any suggestions on the best place?
 
[TW]Fox;15733324 said:
You should be aware its a cheap bodge and you should have had it mapped properly or bought a car with a better engine in the first place. I can't help but be a bit suspect about 'tuning boxes'. Surely it just cons the engine into dumping more fuel etc in?
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DTUK are fairly well known and respected.

He could have done a lot worse. The main problem with the boxes is that they cannot distinguish the underlying health of the car and assume all cars are the same.

The problem is that cars arent, and many will have small issues that have gone undiagnosed and will continue to go undiagnosed if you just fit it at home.

The boxes will be fine so long as nothing else is wrong. If there is, you'll soon find out when something goes bang early.
 
A tuning box is basically the same thing as an off the shelf remap, unless you spend £600 + on a custom rolling road map then tuning box or not you get the same problems.

Its quite a new car anyways odds of it having an error without it reporting it on the dash is quite slim.
 
Firestar_3x said:
A tuning box is basically the same thing as an off the shelf remap, unless you spend £600 + on a custom rolling road map then tuning box or not you get the same problems.

Its quite a new car anyways odds of it having an error without it reporting it on the dash is quite slim.
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depends

Courtenay reckon that at least 30 % of cars that come in for a remap require something tweaking or replacing to get them to produce full stock power.

Most dont have lights on the dash and are simply down on power when put on the rolling road.
 
Firestar_3x said:
A tuning box is basically the same thing as an off the shelf remap, unless you spend £600 + on a custom rolling road map then tuning box or not you get the same problems.

Its quite a new car anyways odds of it having an error without it reporting it on the dash is quite slim.
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I had a custom rolling road map (watched him tweak it), before and after runs and a custom made induction kit made and fitted for £380 so it's not even that expensive. No idea how long it took him to make the induction kit but on the day he spent about 3-4 hours fitting the kit, setting up the car for the rolling road and tweaking the map to how I liked it.
 
yup. all part of their service that they do a thorough health check prior to any remap, and they also regap your plugs slightly smaller as one or two users had the increased boost of the remap blow the spark out causing an intermittent misfire.

As for how many of those 30% would go on to blow up early, we dont know. But its not the sort of chance id want to be taking with what £20,000ks worth of 300C ? once you remap your on your own....
 
Peerzy said:
I had a custom rolling road map (watched him tweak it), before and after runs and a custom made induction kit made and fitted for £380 so it's not even that expensive. No idea how long it took him to make the induction kit but on the day he spent about 3-4 hours fitting the kit, setting up the car for the rolling road and tweaking the map to how I liked it.
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Apples and Pears depends on the car, my off the shelf remap was over £400 but then again i didn't get it done by some company who state an unachievable bhp figure.

MrLOL said:
yup. all part of their service that they do a thorough health check prior to any remap, and they also regap your plugs slightly smaller as one or two users had the increased boost of the remap blow the spark out causing an intermittent misfire.

As for how many of those 30% would go on to blow up early, we dont know. But its not the sort of chance id want to be taking with what £20,000ks worth of 300C ? once you remap your on your own....
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Seems like good service to me, whats the book price for a stage 1 remap?
 
Isn't this all a bit moot on an auto?
It's going to change down when the preset rev value in the ECU tells it to, regardless of how much you've just increased torque by and this is where the claimed extra MPGZZZZ come from, the ability to hold the gear longer without labouring the engine (in a manual).
 
Inside jokes are getting a bit old now, especially when ppl are genuinely asking for help :p

rx8
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etczzzzzzzzzzzzzzzz
 
Firestar_3x said:
Apples and Pears depends on the car, my off the shelf remap was over £400 but then again i didn't get it done by some company who state an unachievable bhp figure.



Seems like good service to me, whats the book price for a stage 1 remap?
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Yeah I went with a guy who's know for doing Fiats (also does Pug's and Alfa's and other stuff), it's basically just him, he rents the RR time, designs and makes all the induction kits himself and tweaks the map in front of you. He made a point of not getting the highest bhp figure for me but the best mid range bhp and torque, gave me a few drives and tweaked it again when I said it span too much in first.

He told me if I ever wanted the car back to standard it would be free (he saved my original map and I've kept the standard airbox).

His website states £249 for a remap on the bigger engines for the Bravo's, but mention you're on any of the big forums or come along to a RR forum day and he knocks it down to £199.

Ah before your edit it looked like you were asking me for stage 1 remap prices.
 
I was miles off, was aiming the Avensis bullet at mr Yaris owners mate, thought he was OP

Ah well. Must read full post next time.
 
As far as tuning boxes go I think these are amongst the better options out there. As others have pointed out though, it won't be as good as a proper remap. I think that's fairly obvious and not really up for debate. I'll be interested in your feedback on the economy side of things as my understanding/personal experience is that whilst many remaps and tuning boxes claim better fuel economy very few actually deliver and, if they do, the difference is miniscule.

If your engine is making more power by upping the boost and therefore injecting more juice - and if you make use of that extra even a relatively small percentage of the time you are going to use more fuel...
 
[TW]Fox;14765791 said:
And coming from a Mk4 Astra owner this is scathing stuff indeed :D
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OI :D

And yes these tuning boxes, are a lot of crap. Designed to confuse the engine into chucking more fuel in, not to switch the actual map. I thought it was only chavs who didn't want to inform their insurance companies who got them aswell.
 
Begbie said:
OI :D

And yes these tuning boxes, are a lot of crap. Designed to confuse the engine into chucking more fuel in, not to switch the actual map. I thought it was only chavs who didn't want to inform their insurance companies who got them aswell.
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Perhaps you want to read up about the non 50p tuning boxes and what they actually do before you make comments like that?
 
Firestar_3x said:
Perhaps you want to read up about the non 50p tuning boxes and what they actually do before you make comments like that?
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Only going by the knowledge of the one a work college spent £200 on for his 1.7dt corsa. Done nothing for it, except cause problems and ran like a bag of spanners after.

Do the decent ones acctually change the ecu on the fly then? Do they not need to connect to the ECU to be able to do so? Genuinely interested.
 
The DTUK box for the 300C not only connects to the injector loom but to the boost pressure system, so its got full control over the cars fuel and boost pressures, which is basically what a full remap does, if the engine has knock control this should still work.

Its much more than disconnecting the MAF and putting a resistor across it to fool the engine to stick in more fuel.
 
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