Re Map or superchip for 2.0
- Thread starter richiez4
- Start date
Jonny essex said:I got 12bhp low range and 20bhp high range, feel a slight difference and had a full dyno test too.
Thats all you can do on this engine im affraid and i only got that much bhp due to some other mods
What other mods did that include buddy? I was thinking about doing some mods and having a remap, 20bhp is pretty good for a NA to say it only had 150bhp to start with
sk93 said:
Hmm ... you will forgive my scepticism I hope. What other mods are we talking? Esp. given that 7 bhp is nigh on a 5% gain.
I've had some experience of remapping NA engines and in my experience there are gains to be had, but they are small and generally more in the drivability and smoothness stakes than outright power gains. The best results were with a freshly rebuilt Porsche flat 6, but even that was nowhere near 13%. When that was done we also did some testing of air filters - K&N versus standard, the difference was barely measurable.
Jonny essex said:I got 12bhp low range and 20bhp high range, feel a slight difference and had a full dyno test too.
Thats all you can do on this engine im affraid and i only got that much bhp due to some other mods
I just can't believe those gains....I would love to be proved wrong though as engine tuning genuinely interests me so post the damn dyno graphs up
Dont think i ever saw jonny's dyno's :roll: before/ after etc.
A remap will certainly improve the drivability level the flat spots... But thats doesnt give anymore top end power.
I had my old mk4 golf gti superchipped and remapped and even that got under 20% from a turbo'd engine!!! 13% increase on a NA engine with filter, exhaust and remap and i am claiming pub talk bs!
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A remap will certainly improve the drivability level the flat spots... But thats doesnt give anymore top end power.
I had my old mk4 golf gti superchipped and remapped and even that got under 20% from a turbo'd engine!!! 13% increase on a NA engine with filter, exhaust and remap and i am claiming pub talk bs!
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In terms of bhp/£ this is what the channel 5 car programme demonstrated.
New oil and filters. Inc air filter. Redex Injector cleaner gained an extra 5 bhp but I suppose it depends on how unloved the car was before.
Just to clear things up. This is not an ex tra 5 bhp above design. Just to maintain peak.
New oil and filters. Inc air filter. Redex Injector cleaner gained an extra 5 bhp but I suppose it depends on how unloved the car was before.
Just to clear things up. This is not an ex tra 5 bhp above design. Just to maintain peak.
tertius said:
of course
I was thinking mods along the lines throttlebodies / bigger injectors, stronger internals, improved breathing etc.. not just a bolt on exhaust or air filter.
Mind you.. temp changes can make a difference too - dyno on a crisp cold winters morning and you'll get better than lunch time mid summer...
A
Anonymous
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Remaps on N/A engines are useless unless you want it done for improved power delivery but then you should expect to see your fuel economy deminish as the remap will remove the eco sweet spots that bmw tuned in.
If you want more power go and buy a 3.0 or /M.
If you want more power go and buy a 3.0 or /M.
Can't remember who it was, but one forum member had his car on the dyno for 2 runs with NO changes or performance improvements in between.
Second run was 13bhp higher.
I think gains are pre programmed into some dynos. Why? Because you wouldn't part with you money if there was no gain. I can just see the conversation:
Tuner - "Well Mr Petrol Head, we know we promised 20bhp, but your car must be strange, we only managed to get 0.5bhp gain. That'll be £300 please"
Mr Petrol Head - "Wow that's great value for money, tell you what..... Take £500, great work"
Second run was 13bhp higher.
I think gains are pre programmed into some dynos. Why? Because you wouldn't part with you money if there was no gain. I can just see the conversation:
Tuner - "Well Mr Petrol Head, we know we promised 20bhp, but your car must be strange, we only managed to get 0.5bhp gain. That'll be £300 please"
Mr Petrol Head - "Wow that's great value for money, tell you what..... Take £500, great work"
stlymch said:
I see a lot of people telling others this. It's not always possible you know... And just because they've gone down a lot in price, making them more affordable, that doesn't mean that everyone will have the funds to maintain them as well.
Plus, (this might not apply to the UK of course) in many places there are horrendous increases in road tax, insurance, import duties etc for bigger engined cars. Me for example, my car's a UK one which i imported to CY myself, i paid almost as much in import duties as i did in the UK to buy it....... If it was a 2.0 or a 2.2 the import duties would be almost a tenth of what i paid for my M....
To the original poster, you'll probably not see much of a difference in horsepower but it'll probably wake it up a bit, that combined with some good maintenance, such as fresh oil, new spark plugs and new air filter might liven it up enough for you to be happy with it. Some tuners also offer money-back guarantee if you're not happy with the remap, perhaps ask about something like that?
To the op, if you want the car to feel faster/ more responsive... Lightweight wheels will give you better looks and performance gains.
Haha! I like it!
You prob got that 20bhp from first service after 4 years!
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Jonny essex said:
Haha! I like it!
You prob got that 20bhp from first service after 4 years!
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Re-mapped chip = The magic beans sold to Jack (and the bean stalk), they have magical powers..... 
A re-mapped ECU chip DOES work (i have one) and does have a noticeable effect on a 2.0lt, but it is mild to say the least and i bet my House you can not get a extra 20bhp (170bhp on the rollers) out of that engine from a chip, even with exhaust and induction kit, its impossible, its a dream! Anyone that claims other wise has no clue what a re-map actually does (apart from make fire come out the back and you enter warp-speed like out of Star Trek lol). When people say a "NEW EXHAUST they normally mean just 30 -50% at the back, it will still have the CAT's (this is where most of the restriction in a exhaust is) and standard manifold and down pipe.
Induction kits do let more air in and make a great noise, but with out frequent cleaning they let more crud in your throttle & engine and long term this reduces performance.
If you can justify the cost GO FOR IT, but short of a slightly more vigorous pick up in the mid range 2 & 3rd gears if you puss the car past 4000rpm you would never notice the difference.
Face facts, the BMW 2.0lt engine is 150bhp out of the box, its possibly the least exciting and tunable of Any 2.0lt engines out there (apart from Hyundai) Honda do 1 with 25% (a quarter more) thats 50bhp more power, and that can be tuned up a lot further.
Its a mediocre engine dropped into a awesome roadster chassis. The 2.0lt Z4 is a great car because its amazing looks and classic Front engined rear wheel drive set up. I love mine.
To summarize:
It'll make 2nd and 3rd gear more fun, and might save you a few pennies fuel on the motorway (not much) but it wont make your car faster top end and you wont be as fast as a Golf or a Civic
A re-mapped ECU chip DOES work (i have one) and does have a noticeable effect on a 2.0lt, but it is mild to say the least and i bet my House you can not get a extra 20bhp (170bhp on the rollers) out of that engine from a chip, even with exhaust and induction kit, its impossible, its a dream! Anyone that claims other wise has no clue what a re-map actually does (apart from make fire come out the back and you enter warp-speed like out of Star Trek lol). When people say a "NEW EXHAUST they normally mean just 30 -50% at the back, it will still have the CAT's (this is where most of the restriction in a exhaust is) and standard manifold and down pipe.
Induction kits do let more air in and make a great noise, but with out frequent cleaning they let more crud in your throttle & engine and long term this reduces performance.
If you can justify the cost GO FOR IT, but short of a slightly more vigorous pick up in the mid range 2 & 3rd gears if you puss the car past 4000rpm you would never notice the difference.
Face facts, the BMW 2.0lt engine is 150bhp out of the box, its possibly the least exciting and tunable of Any 2.0lt engines out there (apart from Hyundai) Honda do 1 with 25% (a quarter more) thats 50bhp more power, and that can be tuned up a lot further.
Its a mediocre engine dropped into a awesome roadster chassis. The 2.0lt Z4 is a great car because its amazing looks and classic Front engined rear wheel drive set up. I love mine.
To summarize:
It'll make 2nd and 3rd gear more fun, and might save you a few pennies fuel on the motorway (not much) but it wont make your car faster top end and you wont be as fast as a Golf or a Civic
