Technical GP sporting mods

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Technical GP sporting mods

Conor_Herts_UK

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after a remap to 170 bhp, will further mods such as exhaust etc affect the car at all, or what if the remap wos the last mod to be dun, and others to be dun b4 it?? im very confused over diesal modifications! any help wud be great!
 
well, from previous experience, i would suggest other mods before the remap, so that the remap will make the most of the others mods... but i dont know what else is available for the GP MultiJet Sporting other than the remap...

don't you think the exhaust will make it sound like a bus with it being a diesel?
 
surly an exhaust for performance? if it aids performance who gives a damn about the noise? what about downpipes etc? there has to be summit out there, what about the guy who uses his car as a driving skool car, what effect wud the exausht system he has on that affect the car?
 
i don't think an after market exhaust would yield any extra bhp... minimal gains of something like 3-4bhp if that, and personally i don't think you would notice any performance gains, especially as the remap can give a solid reliable gain of 40bhp which you will notice.

but by all means go for it, but don't go too big, if the MJ engine is the same as a petrol engine then they need a certain amount of back pressure for the turbo to be working at its best...

also, be prepared to get a bit more soot all over the back of the car.
 
Forget about any other mods other than a re-map. I know this is going to sound stupid but the re-map is limited to 170bhp by Angel, they could re-map it further and give you a few more bhp to boast about but it will start causing you problems. Unless you plan on uprating the clutch you might as well forget it now.

You sound very much like how i used to be, looking for every possible inch of power. I know its not nice to hear but unless you want to look at spending big bucks then just stick to the re-map.

If you do decide to go for it without sorting the clutch then you are likely to screw the gearbox and when the dealer sees how modified the car is for power they will probably just laugh and show you an invoice, be aware.

Rich
 
That is a good call rich (if dats ur name ha ha), im 18 years old, iv only bin used to low power cars, so even 130 bhp sounds alot to me! its more of a 'want' rather then bein practical about it, i wudner is there anyone on the forum that has done mods apart from the remap, just to see what they say, but ur explanation has really made me see the light!
 
That is a good call rich (if dats ur name ha ha), im 18 years old, iv only bin used to low power cars, so even 130 bhp sounds alot to me! its more of a 'want' rather then bein practical about it, i wudner is there anyone on the forum that has done mods apart from the remap, just to see what they say, but ur explanation has really made me see the light!

Yeah it is mate, lol. I guessed you would be, im only 20 myself. If you have only driven low powered cars then 130bhp, as you say, is a lot. The torque is even better. It sounds stupid coming from me seeing as i havent been driving much longer than you but with the mods you were looking at you could be talking near 200bhp and at 18 thats very dangerous. Not saying your a bad driver in any way but you (like me) need to gain some experience.

I wanted more power because i drove a SportKa before and although it sounds and looks a bit girly it was very nippy (claiming 0-60 in the same time as the 1.9) so i had to do something.

In terms of other mods, i dont think many have done anything else and the main reason for it is that nothing else really gives good gains in power.

Rich
 
most exhausts are fitted to cars such as cheap universal back boxes that give little if any performance increases but you see lots of them about!
 
most exhausts are fitted to cars such as cheap universal back boxes that give little if any performance increases but you see lots of them about!
Without stereotyping too much - and unless it's on a pink badge Impreza, an Evo or another obviously high performance car - a noisy exhaust just makes me think "tit!".

The wasp-in-a-tin-can effect on a low powered car always gets me chuckling and the drivers usually struggle to accelerate any faster than me in my 1.3CDTI Corsa anyway :p

A re-map is definitely the way to go - no tinkering with the workings of your car but reaping solid BHP benefits (especially in the case of the 1.9 diesel).

I've always been a big fan of cars that look standard but have that something extra under the bonnet - that way you've always got something up your sleeve without looking like a boy racer :cool:
 
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i don't think an after market exhaust would yield any extra bhp... minimal gains of something like 3-4bhp if that, and personally i don't think you would notice any performance gains, especially as the remap can give a solid reliable gain of 40bhp which you will notice.

I have to disagree to your statement. A properly designed exhaust system does make quite a difference even more so where manufacturers try to make them cheaper by the month.

What you consider as back pressure is by most of the people totally wrongly interpreted. If anything comes into play it has got to be exhaust tuning.

Re-mapping is certainly the easiest way to gain power on turbo applications, whether Diesel or petrol. Limiting the power of the GP to 170bhp has got no bearing on the life span of the clutch and neither the gearbox and engine.

The important factor to determine the life span is the limit the torque appropriately, which can be done in the map (if needed).

Getting more power than with e re-map alone would require exhaust and inlet modifications. This would allow the turbo to work less hard and the boundries can be pushed further before serious hardware components have to be uprated.

Items such as uprated clutches are available from various manufacturers.

At the moment there is not too much out there for Diesel powered engines in terms of performance tuning other than re-maps and turbo upgrades. This has nothing to do with the tuning capabilities of the Diesels, rather than the fact that consumers get a fairly cheap re-map and are not ready yet to go further as the financial implications are much more severe to get more power out than the re-map.
 
I was having a discussion about exhaust systems with my lecturer the other day. Basically if you want to have an uprated exhaust system the induction should be uprated too to get any kind of gain, so, you get more air in to get more of it out quicker. But normally it is pretty minimal, without ajusting other parts.
 
In order to gain an extra performance from the remap you need to cool the turbo chamber down sufficiently in order to allow turbo to spool faster.

Merely having an uprated air intake and exhaust will not do this sufficiently. Yes it will allow an extra 3-4 bhp but will really only serve as a tidy up measure the only way to gain sufficient extra power is to fit either a front mounted intercooler or a hybrid turbo which then if peak torque is limited correctly will allow you to gain a serious amount of extra power.

Regards,

Tony
 
Sorry Tony, but I have different experiences in this respect. Induction kits and exhausts are my life and testing shows that it can make quite some differences.

Regarding the cooling of the intake air I do agree absolutely.
 
basically it looks like mega bucks for further mods that wont ruin the car. and rich, sport ka's aint as girly as the basic model ones, they have a bit more flair lol.
is there nobody that still hasnt had a remap by celtic? the gentleman from their seemed very happy to fight his corner on this and other posts which i think is good!
 
To be honest i cant say im surprised about other mods being expensive. Yeah i suppose its not as bad as the standard one. Lol, it actually went really well, just had no top end pull at all because its only an 8 valve.

Fair play to him for coming on and listening to what is being said and until each person has an experience with them we are never going to know anything for certain.

Rich
 
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