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Thread: Diesel Vs. Petrol - Tuning Box Vs. Remap

  1. #1
    Regular Member Spikey©'s Avatar
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    Default Diesel Vs. Petrol - Tuning Box Vs. Remap

    I had a little fun on Friday and Saturday and got the chance to drive 2 fantastic motors. Thanks to Martyn and Duncan for letting me have spins. Been asked by a few people now to draw comparisons between the 2 cars and say which is best. I'm a petrol driver and fan, but will try to be as objective as I can.



    Firstly on Friday evening I drove Martyn's 3.0 CDTI V6 SRi vectra with tuning box, most of you know of this car as it used to belong to Abyss. Martyn was a little worried that his brakes were not up to scratch, I can clear that up for you now mate, they felt fine to me, you have to remember just how heavy the Vectra is, especially with this engine and the amount of torque it produces has to go somewhere before it slows down. Anyway on to the engine, all I can say is WOW! I'll NEVER slag off a diesel again, certainly not in this form.

    The power delivery is truly astonishing; masses of torque just glue you back in the seat. Put your foot hard down in 2nd and the thing launches like a rocket and pulls like a train until you run out of revs. Change gear and floor it again and sheesh there's that torque again and wham you're stuck to the seat once more, but then the revs disappear again, time for the next gear...With 6 of them this monster just seems to want to keep pulling forever from low down in the revs. I can see why you guys love your tractors so much. This engine with a tuning box is nothing short of brutal, there's little subtlety about it and then there's the noise! We're not talking old fashioned diesel tractor rattle here (none of that with this engine) but pure V6 growl, lovely.



    Next, on Saturday I had a real personal treat install, getting a go in Duncan’s boot-e-full siggy, for those that don't know this has the 2.0 turbo petrol engine with a BSR remap.

    It took a little getting used to the clutch in this as it felt different to most of the cars that I’ve driven, so we had a little over-revving and some slight kangaroo juice until I got used to it..eventually. This engine, with the BSR remap is sweet as a nut, in fact I think 'sweet' is a fair way to describe it in comparison to the brutal 3.0CDTi; you have this feeling that it's eager and waiting for you to give it some. I think it would be a dominatrix if it was a person, kind of whispers to you, come on bad boy give me a spanking...anyway I digress, that came later floor this one in 2nd and it kind of goes 'oh yeah, wanna race eh?' and teases you into stamping your foot through the floor, but then hang on what's that? Like a whining noise, could it be the tur...whoosh! Oh yes we're away! But then you already were away but it's so easy going you don't realise just how fast you're going. Being a petrol you get the gentle build up of power all the way through the revs and it happily approaches the red line without a murmur.



    So, in conclusion, I hear you ask, which is better?



    I don't know, plain and simple, I just don't know. I think I would have to buy both and take each one out depending on what sort of mood I’m in. There's no doubt the petrol is a much more refined drive than the diesel, but the diesel torque is incredible. In the end I guess it comes down to your individual taste. Performance wise I doubt there's much to separate these 2, except in the economy stakes. I don't know the figures but the tractor must surely win there, but do you buy a motor like this for the economy? I wouldn't, if I wanted economy I’d have kept the Corsa 1.7Di.



    They are both amazing machines and if you wanted to give me either I’d be quite happy! Which one would I buy? I'll let you know once I’ve driven a 3.2 GSi

  2. #2
    Regular Member Steven's Avatar
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    excellent write up Neil

    Sounds like you had fun mate

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    Regular Member Spikey©'s Avatar
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    Quote Originally Posted by gil16e
    excellent write up Neil

    Sounds like you had fun mate
    GREAT fun mate, both motors are awesome, but more importantly, had 2 great days meeting some real nice folks. Martyn and Mark + family on Friday and then Duncan, Plasma, The GSi's and Mark again (think he's following me ) on Saturday.

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    Regular Member Caterman's Avatar
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    Yippeeeeeee........a petrolhead that is impressed by the mighty diesel See what we have been saying Neil, they are good aren't they
    Excellent write up m8.

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    Nice write up mate

    I can understand your dilemma about which is better

    Ive got a 3.0V6 CDTi Auto with the same tuning box as Martyns and I am blown away by how powerful and smooth the car is. My wife has a BMW 323i which puts out about 170BHP and is no slouch but i think my tractor would eat it head to head. Before I got the vec i didnt think you would get diesel as quick, smooth or quiet

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    Regular Member Gsi3.2's Avatar
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    Quote Originally Posted by Spikey©
    I'll let you know once I’ve driven a 3.2 GSi
    You know when and where mate

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    Regular Member Spikey©'s Avatar
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    Quote Originally Posted by Gsi3.2
    You know when and where mate
    I do indeed, PVS just keeps looking better and better










    I wonder if could sneek it down the strip without him noticing?

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    Regular Member Spikey©'s Avatar
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    Quote Originally Posted by billy12
    Nice write up mate

    I can understand your dilemma about which is better

    Ive got a 3.0V6 CDTi Auto with the same tuning box as Martyns and I am blown away by how powerful and smooth the car is. My wife has a BMW 323i which puts out about 170BHP and is no slouch but i think my tractor would eat it head to head. Before I got the vec i didnt think you would get diesel as quick, smooth or quiet

    I think Mark The Cabby may be wanting a word in your ear, he has the same engine/auto as you and is considering a box of some sort.

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    Regular Member Gsi3.2's Avatar
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    The clouds of smoke from the tyres not sticking will give it away...

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    Regular Member Spikey©'s Avatar
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    Quote Originally Posted by Caterman
    Yippeeeeeee........a petrolhead that is impressed by the mighty diesel See what we have been saying Neil, they are good aren't they
    Excellent write up m8.
    I've not tried the 1.9's yet so would reserve judgement on that particular varient, but yes the 3.0 CDTi is awesome.

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