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Re mapping

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MTB Phil
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Re mapping

Post by MTB Phil » Wed Oct 25, 2017 3:40 pm

Good afternoon,

I have a 2004 2.2, just after a bit of extra punch, I have seen online that a company called Quantum remap the on board computer and this will give a boost of 17 bhp, bringing the power very nearly up to a 2.5, the torque is also improved. Does anyone have any first hand experience of this please. The cost is only £249, so I must admit, I am very tempted.

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Phil

Monkeydonkeyratmagic
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Re mapping

Post by Monkeydonkeyratmagic » Wed Oct 25, 2017 4:16 pm

Waste of time on a N/A engine. All it will do is make the engine run on cold map the whole time. Honestly don't bother.
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Buckz
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Re mapping

Post by Buckz » Wed Oct 25, 2017 4:30 pm

imo if you want more power get 2.5 or 3.0 :)

as above, I wouldn't bother on NA engine.
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ph001
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Re mapping

Post by ph001 » Wed Oct 25, 2017 5:36 pm

17bhp my arse! 2 or 3 at best. Certainly not something you will notice. Save your £250 for something worthwhile.
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MTB Phil
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Re mapping

Post by MTB Phil » Thu Oct 26, 2017 9:01 am

Thanks for the responses, well that's that then, a 3 litre it is then !!!!

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Marlon
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Re mapping

Post by Marlon » Thu Oct 26, 2017 9:28 am

I agree that your best bet is to go for the 3 litre, however I used a Quantum re-map on my 3.0 for a claimed 9% gain.
No dyno runs so can't back that up with data, but it definitely felt more urgent and greater torque after (claimed 265 to 280ish bhp).
If you have a spare half hour you can read my journey from making the decision through to the driving feel afterwards: viewtopic.php?f=2&t=82745&hilit=quantum+remap
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ph001
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Re mapping

Post by ph001 » Thu Oct 26, 2017 9:40 am

Marlon wrote: Thu Oct 26, 2017 9:28 am I agree that your best bet is to go for the 3 litre, however I used a Quantum re-map on my 3.0 for a claimed 9% gain.
No dyno runs so can't back that up with data, but it definitely felt more urgent and greater torque after (claimed 265 to 280ish bhp).
If you have a spare half hour you can read my journey from making the decision through to the driving feel afterwards: viewtopic.php?f=2&t=82745&hilit=quantum+remap
A well known trick is for them to simply change the throttle mapping in a similar way to what pressing the sport button does, which does make the car feel more urgent. I think there are often improvements to be had in terms of drive-ability and playing around with VANOS timing can shift the torque curve around a little which can make the car feel quite different in terms of delivery. Maybe those are enough justification for some people, but in terms of overall power gains remaps on modern n/a cars are very limited indeed.
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Monkeydonkeyratmagic
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Re mapping

Post by Monkeydonkeyratmagic » Thu Oct 26, 2017 9:57 am

^ Agree, If BMW's programming team are outdone in terms of SAFE performance and economy etc by some random 3rd party spamming out maps for 100's of cars then I don't think their bosses would be too pleased.

Like induction kits, Anyone remember Revs Magazine, every page splattered with adverts with them claiming 10% (yes 10% not 10BHP) for installing a poverty spec K&N Filter. All we ever got on our N/A Astra's was heat soak and crap economy.

Then Exhausts... Magnex exhausts anyone? I swear they choked my Rover 220 Turbo to death.

Anyway OT, 99% of the time on an NA engine they are a waste of time. Exceptions being NA RenaultSport Engines but exclusively limited to the RSTuner by Fastchip. They transform the car outright and stop it kangarooing down the road in the morning and iron out the rev range a touch. Superchips etc are largely a waste.

More OT, Buy a 2.5i for near half the cost (they are actually a lot cheaper than good 3.0s) and Supercharge it for £4.5k. for £7-8k you'll have a pretty monstrous motor.
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Re mapping

Post by idej_z4 » Thu Oct 26, 2017 10:40 am

I've been considering a remap for a while now...but now I am unsure. Apart from a supercharge (which is way out of my budget) what other mods can I make to increase power? I've done the K&N air filter and added a custom back box. I've got the 3.0si

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Re mapping

Post by jamie_z4 » Thu Oct 26, 2017 10:41 am

idej_jedi wrote: Thu Oct 26, 2017 10:40 am I've been considering a remap for a while now...but now I am unsure. Apart from a supercharge (which is way out of my budget) what other mods can I make to increase power? I've done the K&N air filter and added a custom back box. I've got the 3.0si
defo consider a remap - the N52 seems to be one of the few NA engines which respond well to a map. I had my 2.5i (177bhp) mapped to 200 bhp! Which I was astonished at.
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Marlon
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Re mapping

Post by Marlon » Thu Oct 26, 2017 10:42 am

idej_jedi wrote: Thu Oct 26, 2017 10:40 am I've been considering a remap for a while now...but now I am unsure. Apart from a supercharge (which is way out of my budget) what other mods can I make to increase power? I've done the K&N air filter and added a custom back box. I've got the 3.0si
As said - Quantum remap for £299, you will feel a difference and it won't break the bank :thumbsup: :driving:
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Re mapping

Post by idej_z4 » Thu Oct 26, 2017 10:45 am

jamie_z4 wrote: Thu Oct 26, 2017 10:41 am
idej_jedi wrote: Thu Oct 26, 2017 10:40 am I've been considering a remap for a while now...but now I am unsure. Apart from a supercharge (which is way out of my budget) what other mods can I make to increase power? I've done the K&N air filter and added a custom back box. I've got the 3.0si
defo consider a remap - the N52 seems to be one of the few NA engines which respond well to a map. I had my 2.5i (177bhp) mapped to 200 bhp! Which I was astonished at.
Cheers J. :thumbsup:

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Re mapping

Post by iamflamez » Thu Oct 26, 2017 12:14 pm

I have remapped a fair few of these n/a bmw engines now, Done a z4m recently and while it won't give you turbo levels of gains it still makes a nice difference on an n/a engine. 20bhp is still noticeable on a relatively small and light car. :thumbsup:

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85genius
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Re mapping

Post by 85genius » Thu Oct 26, 2017 2:25 pm

Monkeydonkeyratmagic wrote: Thu Oct 26, 2017 9:57 am ^ Agree, If BMW's programming team are outdone in terms of SAFE performance and economy etc by some random 3rd party spamming out maps for 100's of cars then I don't think their bosses would be too pleased.
The point you are missing here is that BMW do not and did not design the engines for maximum SAFE power output they design the engine then map it to fit with a specific emissions profile hence gains are able to be made at the cost of increased CO output from the exhaust which lets be honest none of us can really care that much about or else we'd all be in the prius forum instead...

As a side note I spoke to Rob before he did the remap on Marlon's si and he told me that whilst there would definitely be a power increase it would only be just under 10% and actually the most noticeable gain from the Quantum remap for this specific engine ECU combo came from the removal of flat spots and tweaking the pedal response, this was obviously relayed onto Colin prior to him booking it in and as he mentioned above he was happy with the result
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buzyg
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Re mapping

Post by buzyg » Thu Oct 26, 2017 3:35 pm

The old adage, for NA engines at least. "If you what a faster car, buy a faster car", is easy to apply in this case. If the OP was driving a 3.0 ltr already, then a tuneup makes more sense. For Zeds with less displacement, unless you really love your individual Zed, then swap it out for a faster one. :thumbsup:
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