Anyone had it done, especially on the 2.0l is it worth it, I have just checked a couple of places on line and they quote an extra 20 bhp and almost double the torque which I feel would be a massive benefit at lower revs,
Remapping
- Thread starter Sean d
- Start date
@Sean d don't laugh as it's a bit off track but I had my Freelander 2.0 TD4 remapped last year. Night and Day mate (no Z3), much better response right across the range mate and much more responsive.
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- Dec 4, 2011
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- Model of Z
- Z4 3.0si Individual Ruby Black Last one produced in this colour combo
I had a 3.0 Z3 remapped at Evolve of Luton as did a few others on here as a group buy. This was carried out using a rolling road and mapping as they went along and it only returned around 7bhp extra. The main difference on a NA Engined zed will be the throttle response. Dont believe the figures quoted as that is very optimistic on a NA engined car. JMHO
Agreed but it's the turbo that makes the difference, diesel or petrol.
Thanks for the replies guys, I really feel that I need more low down torque, it comes alive at 4500 rpm so I have to drive it really hard to keep it on the power band, only when I need it of course !!
I would be surprised if they can get another 20bhp on a Na car
My 2.0 L (M52TUB20) was very sluggish under 3,500 rpm. Replaced the VANOS seal and regained all of the lost low end performance. Made a great difference. If your car has not had the seals replaced, I suggest you do this first, both to get the improved performance and to ensure that any remapping work is not wasted trying to optimise the performance of an under performing engine.
How big a job is it to replace the VANOS seal thanks.
Having seen your work on FB and this forum, I'ld say you would be able to do the work easily.
Its not hard. There are good written guides. Check out the link below. Use all new gaskets, do the anti rattle rings if your car has done around 100,000 miles.
http://www.beisansystems.com/
You can get the seals from Beisan Systems or do a search on flebay for complete kits
Its not hard. There are good written guides. Check out the link below. Use all new gaskets, do the anti rattle rings if your car has done around 100,000 miles.
http://www.beisansystems.com/
You can get the seals from Beisan Systems or do a search on flebay for complete kits
- Joined
- May 19, 2015
- Points
- 151
TBH - you get just as much improvement by changing the exhaust and intake - but you get an acustic improvement benefit as well - remap only benefit is for turbo cars
Agreed to a degree but you need to know your stuff on exhausts as the wrong one can actually decrease your power output whilst sounding nice. Auto Express did a test on a number of "sports exhausts" on a standard XR3I some years ago with some kicking out less power than the standard exhaust. If your car is in good nik then you could expect circa 10% increase from a NA car. I think you'd be pushed to get 10% increase on exhaust and intake. Sound better though.
- Joined
- May 19, 2015
- Points
- 151
I would also like to add - 20 bhp - its not much - just empty the boot - lol
When I had N/A cars I had head ported, and custom 4-2-1 exhaust, high lift cam etc etc etc.
Power gains minimal - and you can easily start spending £0,000 just to get some extra power.
I agree with Andy - not all exhausts will improve power - what you need to remember to need to increase the flow of air, petrol and there exit to improve performance in an NA
Best bet save your money and go for an 6 cylinder - I can only dream of the sound
When I had N/A cars I had head ported, and custom 4-2-1 exhaust, high lift cam etc etc etc.
Power gains minimal - and you can easily start spending £0,000 just to get some extra power.
I agree with Andy - not all exhausts will improve power - what you need to remember to need to increase the flow of air, petrol and there exit to improve performance in an NA
Best bet save your money and go for an 6 cylinder - I can only dream of the sound
It is a 6 pot and sounds fab with standard exhaust, I just feel it should have more bottom end torque, however on a recent meet I had a 2.2 behind me that said, "he was struggling to keep up with me"
I've done lots of reading on improvements to BMW engines and have come to the conclusion that for general driving on the road, all you need to do is keep your BMW engine well maintained and running right (VANOS seal changes etc). BMW does a really good job with their design and mapping to produce a reliable car that can be used for a wide array of driving styles.
Simple improvements like, exhaust changes, manifold changes, fog boxes etc all need a remap to get the full benefit out of them as the BMW map is optimised for the standard set up. The cost benefit ($/HP) does not stack up unless you can do the engine monitoring and remapping yourself.
Forced induction will surpass the 75 HP per Litre threshold that most BMW engines run to, but at high financial expense and reduced reliability.
Should you want to turn your car into a higher performance car for a specific application/driving style then get into Exhaust changes, manifold changes, fog boxes, forced induction, remapping etc. Know the trade offs as there are no free rides.
E.g. Fitting a M50 manifold to a M52 engine gives you more HP at the high rev range and shifts torque from the mid rev range to the high rev range. How many of us drive the car above 5,000 rpm regularly to use the changed performance? Likely only those who race their cars (hopefully on a race track).
Cars are a symbol of our individuality, so by all means modify them as you see fit
Simple improvements like, exhaust changes, manifold changes, fog boxes etc all need a remap to get the full benefit out of them as the BMW map is optimised for the standard set up. The cost benefit ($/HP) does not stack up unless you can do the engine monitoring and remapping yourself.
Forced induction will surpass the 75 HP per Litre threshold that most BMW engines run to, but at high financial expense and reduced reliability.
Should you want to turn your car into a higher performance car for a specific application/driving style then get into Exhaust changes, manifold changes, fog boxes, forced induction, remapping etc. Know the trade offs as there are no free rides.
E.g. Fitting a M50 manifold to a M52 engine gives you more HP at the high rev range and shifts torque from the mid rev range to the high rev range. How many of us drive the car above 5,000 rpm regularly to use the changed performance? Likely only those who race their cars (hopefully on a race track).
Cars are a symbol of our individuality, so by all means modify them as you see fit
I've had my M52tu remapped. Quoted figures push it to 211bhp.
I have already had a stainless fitted and a simota air intake.
One thing i can say is the engine is a lot smoother now with out any real powerband as such, top end is very responsive and the car pulls with ease any gear from any rev range.
It is a generic map and wasn't expensive but it has changed the cars characteristics and improved fuelling.
@Bozzy has been out with me when at Tony's and was surprised by the feel of it .
In my view it was worth it it filled in the low end torque as the power curve was changed with the map.
I have already had a stainless fitted and a simota air intake.
One thing i can say is the engine is a lot smoother now with out any real powerband as such, top end is very responsive and the car pulls with ease any gear from any rev range.
It is a generic map and wasn't expensive but it has changed the cars characteristics and improved fuelling.
@Bozzy has been out with me when at Tony's and was surprised by the feel of it .
In my view it was worth it it filled in the low end torque as the power curve was changed with the map.
Interesting read this as I'm wanting to try and squeeze a bit more out of mine. Have the exhaust, I'm wanting to put an M50 manifold on next and go from there.
+20 BHp just with remap on a NA engine? I call bull on that.
If your engine is in top conditions (and if it's not I suggest you try to restore it, you might be surprised on the results) the only thing that could get close to those results and keep the engine NA are ITB's (+remap of course)
They cost a fortune but apparently make a lot of difference.
http://www.jenvey.co.uk/products2/throttle-body-kits/bmw-m52-6-cly-tbp45-kit-ckb02
If your engine is in top conditions (and if it's not I suggest you try to restore it, you might be surprised on the results) the only thing that could get close to those results and keep the engine NA are ITB's (+remap of course)
They cost a fortune but apparently make a lot of difference.
http://www.jenvey.co.uk/products2/throttle-body-kits/bmw-m52-6-cly-tbp45-kit-ckb02
I have a simota induction fitted to my 2.0 also just fitted a cat back quad stainless exhaust also just bought m54 330i inlet manifold need to get adapter plate for throttle body once completed will have a remap then I can tell everyone if it works or not also got the 330 purple injectors but not sure if I can use these the inlet manifold and throttle body on a 2.0 and 2.8 m52tub are the same part no only the bore size that differ engine wise cheers Tony.